Alteeve Wiki - User contributions [en-gb]

Christopher Olah

2011-03-17T18:18:00Z

Colah: Added link to my user page.

{{header}}

A [http://hacklab.to Hacklab.TO]'er. He is [[User:colah | colah]] on this wiki.

{{footer}}

User:Colah

2010-05-25T05:30:16Z

Colah: Made my user page.

Greetings, I'm Christopher Olah. I'm a high school student interested in math, CS, and philosophy. You can find more of my work at by [http://christopherolah.wordpress.com/ blog].

File:SampleXen2NodeClusterMap.png

2010-05-25T05:00:20Z

Colah: More formatting issues.

{{header}}

A pretty map of a 2-node cluster, based on the following ASCII diagram:
------
<source lang="text">
[ Back ]
[ Channel ]
_[_Node01_]__________________________________________________________ [ Network ] __________________________________________________________[_Node02_]_
| _______________ | | | _______________ |
| | dom0 ______| ________ _______| _____|_____ |_______ ________ |______ dom0 | |
| | | eth0 =-[vif0.0]-----------------------| xenbr0 |-| peth0 =--| Back |--= peth0 |-| xenbr0 |-----------------------[vif0.0]-= eth0 | | |
| | |_____-| /-----------------| | |______-| | Channel | |-______| | |-----------------\ |-_____| | |
| | | | /---------------| | | | switch | | | |---------------\ | | | |
| | ______| | | /-------------| | | |___________| | | |-------------\ | | |______ | |
| | | eth1 =-[vif0.1]---\ | | | /-----------| | | | | |-----------\ | | | /---[vif0.1]-= eth1 | | |
| | |_____-| | | | | | /---------| | | | | |---------\ | | | | | |-_____| | |
| | | | | | | | | /-------| | | | | |-------\ | | | | | | | | |
| | ______| | | | | | | | /-----| | | | | |-----\ | | | | | | | |______ | |
| | | eth2 =-[vif0.2]-\ | | | | | | | | | | | | | | | | | | | | | | /-[vif0.2]-= eth2 | | |
| | |_____-| | | | | | | | | | |________| | | |________| | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | ________ _______| |_______ ________ | | | | | | | | | _______________ |
| | fw01 ______| | \-+-+-+-+-+-+-+-----| xenbr1 |-| peth1 =-----------------= peth1 |-| xenbr1 |-----+-+-+-+-+-+-+-/ | |______ fw01 | |
| | | eth0 =-[vif1.0]-+---/ | | | | | | | | |______-| [ DRBD Link ] |-______| | | | | | | | | \---+-[vif1.0]-= eth0 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | |-_____| | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | ______| \-\ | | | | | | | | | | | | | | | | | | /-/ |______ | |
| | | eth1 =-[vif1.2]-\ | | | | | | | | | | | | | | | | | | | | /-[viv1.2]-= eth1 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | | | |_______________| |
| | | | | | | | | | | | | | | | | | | | | | | |
| _______________ | | | | | | | | |________| | | |________| | | | | | | | | _______________ |
| | auth01 ______| | | | | | | | | | | | | | | | | | | |______ auth01 | |
| | | eth0 =-[vif2.0]-+-+---/ | | | | | ________ _______| ___________ |_______ ________ | | | | | \---+-+-[viv2.0]-= eth0 | | |
| | |_____-| | \-----+-+-+-+-+-----| xenbr2 |-| peth2 =--| Internet |--= peth2 |-| xenbr2 |-----+-+-+-+-+-----/ | |-_____| | |
| | | \-------+-+-+-+-+-----| | |______-| | Polluted | |-______| | |-----+-+-+-+-+-------/ | | |
| | | | | | | | | | | | Switch | | | | | | | | | | | |
| | | | | | | | | | | |___________| | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | | | | | | | | _______________ |
| | web01 ______| | | | | | | | | [ Internet ] | | | | | | | | |______ web01 | |
| | | eth0 =-[vif3.0]---------/ | | | | | | | [ Connection ] | | | | | | | \---------[viv3.0]-= eth0 | | |
| | |_____-| | | | | |________| | | |________| | | | | |-_____| | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | _______________ |
| | web02 ______| | | | | | | | | | | |______ web02 | |
| | | eth0 =-[vif4.0]-----------/ | | | | | | | | \-----------[viv4.0]-= eth0 | | |
| | |_____-| | | | | | | | | |-_____| | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| |_______________| | | | | | | | | |_______________| |
| _______________ | | | | | | | | _______________ |
| | res01 ______| | | | | | | | | |______ res01 | |
| | | eth0 =-[vif5.0]-------------/ | | | | | | \-------------[viv5.0]-= eth0 | | |
| | |_____-| | | | | | | |-_____| | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| |_______________| | | | | | | |_______________| |
| _______________ | | | | | | _______________ |
| | dev01 ______| | | | | | | |______ dev01 | |
| | | eth0 =-[vif6.0]---------------/ | | | | \---------------[viv6.0]-= eth0 | | |
| | |_____-| | | | | |-_____| | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| |_______________| | | | | |_______________| |
| _______________ | | | | _______________ |
| | sql01 ______| | | | | |______ sql01 | |
| | | eth0 =-[vif7.0]-----------------/ | | \-----------------[viv7.0]-= eth0 | | |
| | |_____-| | | |-_____| | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| |_______________| | | |_______________| |
|_____________________________________________________________________| |_____________________________________________________________________|
</source>
---------------

It was written in LaTeX + PGF/TiKz. The (rather messy with weird naming convention) source is:

<source lang="latex">

\documentclass{a0poster}

\usepackage{multicol}
\usepackage{tikz}
\usepackage{graphicx}
\usetikzlibrary{positioning,shapes,snakes,matrix,backgrounds,fit,decorations.pathreplacing,calc}

\begin{document}

\tikzstyle{physical}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=5pt]
\tikzstyle{physicaltitle}= [draw=black, fill=black!10, thick, rectangle, rounded corners]
\tikzstyle{physicaloverlay}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=50pt, inner xsep=25pt]
\tikzstyle{abstract1}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners, inner ysep=18pt]
\tikzstyle{abstract1title}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners]
\tikzstyle{abstract2}= [draw=green, fill=green!20, thick, rectangle, rounded corners]

\begin{tikzpicture}

\matrix[row sep=0.75cm, column sep=1cm] {
&&&&&&&&& && &&& \node [physical] (backnet) {Back Channel Network};\\ $~$\\ $~$\\
\node [abstract2] (p1v0eth0) {eth0}; &&&&&&&&& [4cm] \node (p1xenbr0s0) {xenbr0}; && \node [abstract1] (p1peth0) {peth0}; &&& \node [physical] (backswc) {Back Channel Switch}; &&& \node [abstract1] (p2peth0) {peth0}; && \node (p2xenbr0s0) {xenbr0}; &&&&&&&&& \node [abstract2] (p2v0eth0) {eth0};\\
\node [abstract2] (p1v0eth1) {eth1}; &&&&&&&&& \node (p1xenbr0s1) { }; && &&& &&& && \node (p2xenbr0s1) { }; &&&&&&&&& \node [abstract2] (p2v0eth1) {eth1};\\
\node [abstract2] (p1v0eth2) {eth2}; &&&&&&&&& \node (p1xenbr0s2) { }; && &&& &&& && \node (p2xenbr0s2) { }; &&&&&&&&& \node [abstract2] (p2v0eth2) {eth2};\\
%
\\ \\ \node [abstract2] (p1v1eth0) {eth0}; &&&&&&&&& \node (p1xenbr1s0) {xenbr1}; && \node [abstract1] (p1peth1) {peth1}; &&& &&& \node [abstract1] (p2peth1) {peth1}; && \node (p2xenbr1s0) {xenbr1}; &&&&&&&&& \node [abstract2] (p2v1eth0) {eth0};\\
\node [abstract2] (p1v1eth1) {eth1}; &&&&&&&&& \node (p1xenbr1s1) { }; && &&& &&& && \node (p2xenbr1s1) { }; &&&&&&&&& \node [abstract2] (p2v1eth1) {eth1};\\
%
\\ \\ \node [abstract2] (p1v2eth0) {eth0}; &&&&&&&&& \node (p1xenbr2s0) {xenbr2}; && \node [abstract1] (p1peth2) {peth2}; &&& \node [physical] (iswitch) {Internet Connected Switch};&&& \node [abstract1] (p2peth2) {peth2}; && \node (p2xenbr2s0) {xenbr2}; &&&&&&&&& \node [abstract2] (p2v2eth0) {eth0};\\
\\ \\ \node [abstract2] (p1v3eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v3eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v4eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v4eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v5eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v5eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v6eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v6eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v7eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v7eth0) {eth0}; \\ $~$\\ $~$\\
&&&&&&&&& && &&& \node [physical] (internet) {Internet Connection}; \\
};

\begin{pgfonlayer}{background}
\node [physicaloverlay] (node0)[fit= (p1v0eth0) (p1v7eth0) (p1peth2)] { };
\node [physicaltitle] at (node0.north) {node01};
\node [abstract1] (p1v0)[fit= (p1v0eth0) (p1v0eth2)] { };
\node [abstract1title] at (p1v0.north) {dom0};
\node [abstract1] (p1v1)[fit= (p1v1eth0) (p1v1eth1)] { };
\node [abstract1title] at (p1v1.north) {fw01};
\node [abstract1] (p1v2)[fit= (p1v2eth0)] { };
\node [abstract1title] at (p1v2.north) {auth01};
\node [abstract1] (p1v3)[fit= (p1v3eth0)] { };
\node [abstract1title] at (p1v3.north) {web01};
\node [abstract1] (p1v4)[fit= (p1v4eth0)] { };
\node [abstract1title] at (p1v4.north) {web02};
\node [abstract1] (p1v5)[fit= (p1v5eth0)] { };
\node [abstract1title] at (p1v5.north) {res01};
\node [abstract1] (p1v6)[fit= (p1v6eth0)] { };
\node [abstract1title] at (p1v6.north) {dev01};
\node [abstract1] (p1v7)[fit= (p1v7eth0)] { };
\node [abstract1title] at (p1v7.north) {sql01};

\node [physicaloverlay] (node1)[fit= (p2v0eth0) (p2v7eth0) (p2peth2)] { };
\node [physicaltitle] at (node1.north) {node02};
\node [abstract1] (p2v0)[fit=(p2v0eth0) (p2v0eth2)] { };
\node [abstract1title] at (p2v0.north) {dom0};
\node [abstract1] (p2v1)[fit=(p2v1eth0) (p2v1eth1)] { };
\node [abstract1title] at (p2v1.north) {fw01};
\node [abstract1] (p2v2)[fit=(p2v2eth0)] { };
\node [abstract1title] at (p2v2.north) {auth01};
\node [abstract1] (p2v3)[fit=(p2v3eth0)] { };
\node [abstract1title] at (p2v3.north) {web01};
\node [abstract1] (p2v4)[fit=(p2v4eth0)] { };
\node [abstract1title] at (p2v4.north) {web02};
\node [abstract1] (p2v5)[fit=(p2v5eth0)] { };
\node [abstract1title] at (p2v5.north) {res01};
\node [abstract1] (p2v6)[fit=(p2v6eth0)] { };
\node [abstract1title] at (p2v6.north) {dev01};
\node [abstract1] (p2v7)[fit=(p2v7eth0)] { };
\node [abstract1title] at (p2v7.north) {sql01};

\node [abstract1] (p1xenbr0)[fit= (p1xenbr0s0) (p1xenbr0s2)] { };
\node [abstract1] (p1xenbr1)[fit= (p1xenbr1s0) ] { };
\node [abstract1] (p1xenbr2)[fit= (p1xenbr2s0)] { };

\node [abstract1] (p2xenbr0)[fit= (p2xenbr0s0) (p2xenbr0s2)] { };
\node [abstract1] (p2xenbr1)[fit= (p2xenbr1s0) ] { };
\node [abstract1] (p2xenbr2)[fit= (p2xenbr2s0)] { };

\end{pgfonlayer}

\draw [thick] (p1v0eth0.east) -- +(3,0) node[midway,below] {vif0.0} -- ($(p1xenbr0.west)+(0,1.98)$);
\draw [thick] (p1v1eth0.east) -- +(3,0) node[midway,below] {vif1.0} -- ($(p1xenbr0.west)+(0,1.5)$);
\draw [thick] (p1v2eth0.east) -- +(3,0) node[midway,below] {vif2.0} -- ($(p1xenbr0.west)+(0,1)$);
\draw [thick] (p1v3eth0.east) -- +(3,0) node[midway,below] {vif3.0} -- ($(p1xenbr0.west)+(0,0.5)$);
\draw [thick] (p1v4eth0.east) -- +(3,0) node[midway,below] {vif4.0} -- (p1xenbr0.west);
\draw [thick] (p1v5eth0.east) -- +(3,0) node[midway,below] {vif5.0} -- ($(p1xenbr0.west)+(0,-0.5)$);
\draw [thick] (p1v6eth0.east) -- +(3,0) node[midway,below] {vif6.0} -- ($(p1xenbr0.west)+(0,-1)$);
\draw [thick] (p1v7eth0.east) -- +(3,0) node[midway,below] {vif7.0} -- ($(p1xenbr0.west)+(0,-1.5)$);
\draw [thick] ($(p1xenbr0.east)+(0,1.98)$) -- (p1peth0.west);
\draw [thick] (p1peth0.east) -- (backswc.west);

\draw [thick] (p2v0eth0.west) -- +(-3,0) node[midway,below] {vif0.0} -- ($(p2xenbr0.east)+(0,1.98)$);
\draw [thick] (p2v1eth0.west) -- +(-3,0) node[midway,below] {vif1.0} -- ($(p2xenbr0.east)+(0,1.5)$);
\draw [thick] (p2v2eth0.west) -- +(-3,0) node[midway,below] {vif2.0} -- ($(p2xenbr0.east)+(0,1)$);
\draw [thick] (p2v3eth0.west) -- +(-3,0) node[midway,below] {vif3.0} -- ($(p2xenbr0.east)+(0,0.5)$);
\draw [thick] (p2v4eth0.west) -- +(-3,0) node[midway,below] {vif4.0} -- (p2xenbr0.east);
\draw [thick] (p2v5eth0.west) -- +(-3,0) node[midway,below] {vif5.0} -- ($(p2xenbr0.east)+(0,-0.5)$);
\draw [thick] (p2v6eth0.west) -- +(-3,0) node[midway,below] {vif6.0} -- ($(p2xenbr0.east)+(0,-1)$);
\draw [thick] (p2v7eth0.west) -- +(-3,0) node[midway,below] {vif7.0} -- ($(p2xenbr0.east)+(0,-1.5)$);
\draw [thick] ($(p2xenbr0.west)+(0,1.98)$) -- (p2peth0.east);
\draw [thick] (p2peth0.west) -- (backswc.east);

\draw [thick] (backswc.north) -- (backnet.south);

\draw [thick] (p1v0eth1.east) -- +(3,0) node[midway,below] {vif0.1} -- (p1xenbr1.west)+(0,0.5);
\draw [thick] (p1v1eth1.east) -- +(3,0) node[midway,below] {vif1.2} -- ($(p1xenbr2.west)+(0,-0.5)$);
\draw [thick] (p1xenbr1.east) -- (p1peth1.west);
\draw [thick] (p1peth1.east) -- (p2peth1.west) node [midway,below] {DRBD Link};
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2v0eth1.west) -- +(-3,0) node[midway,below] {vif0.1} -- (p2xenbr1.east);
\draw [thick] (p2v1eth1.west) -- +(-3,0) node[midway,below] {vif1.2} -- ($(p2xenbr2.east)+(0,-0.5)$);

\draw [thick] (p1v0eth2.east) -- +(3,0) node[midway,below] {vif0.2} -- ($(p1xenbr2.west)+(0,0.5)$);
\draw [thick] (p1xenbr2.east) -- (p1peth2.west);
\draw [thick] (p1peth2.east) -- (iswitch.west);
\draw [thick] (p2v0eth2.west) -- +(-3,0) node[midway,below] {vif0.2} -- ($(p2xenbr2.east)+(0,0.5)$);
\draw [thick] (p2xenbr2.west) -- (p2peth2.east);
\draw [thick] (p2peth2.west) -- (iswitch.east);
\draw [thick] (iswitch.south) -- (internet.north);

\end{tikzpicture}

\end{document}
</source>
{{footer}}

File:SampleXen2NodeClusterMap.png

2010-05-25T04:57:51Z

Colah: Formatting issues.

{header}

A pretty map of a 2-node cluster, based on the following ASCII diagram:
------
<source lang="text">
[ Back ]
[ Channel ]
_[_Node01_]__________________________________________________________ [ Network ] __________________________________________________________[_Node02_]_
| _______________ | | | _______________ |
| | dom0 ______| ________ _______| _____|_____ |_______ ________ |______ dom0 | |
| | | eth0 =-[vif0.0]-----------------------| xenbr0 |-| peth0 =--| Back |--= peth0 |-| xenbr0 |-----------------------[vif0.0]-= eth0 | | |
| | |_____-| /-----------------| | |______-| | Channel | |-______| | |-----------------\ |-_____| | |
| | | | /---------------| | | | switch | | | |---------------\ | | | |
| | ______| | | /-------------| | | |___________| | | |-------------\ | | |______ | |
| | | eth1 =-[vif0.1]---\ | | | /-----------| | | | | |-----------\ | | | /---[vif0.1]-= eth1 | | |
| | |_____-| | | | | | /---------| | | | | |---------\ | | | | | |-_____| | |
| | | | | | | | | /-------| | | | | |-------\ | | | | | | | | |
| | ______| | | | | | | | /-----| | | | | |-----\ | | | | | | | |______ | |
| | | eth2 =-[vif0.2]-\ | | | | | | | | | | | | | | | | | | | | | | /-[vif0.2]-= eth2 | | |
| | |_____-| | | | | | | | | | |________| | | |________| | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | ________ _______| |_______ ________ | | | | | | | | | _______________ |
| | fw01 ______| | \-+-+-+-+-+-+-+-----| xenbr1 |-| peth1 =-----------------= peth1 |-| xenbr1 |-----+-+-+-+-+-+-+-/ | |______ fw01 | |
| | | eth0 =-[vif1.0]-+---/ | | | | | | | | |______-| [ DRBD Link ] |-______| | | | | | | | | \---+-[vif1.0]-= eth0 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | |-_____| | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | ______| \-\ | | | | | | | | | | | | | | | | | | /-/ |______ | |
| | | eth1 =-[vif1.2]-\ | | | | | | | | | | | | | | | | | | | | /-[viv1.2]-= eth1 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | | | |_______________| |
| | | | | | | | | | | | | | | | | | | | | | | |
| _______________ | | | | | | | | |________| | | |________| | | | | | | | | _______________ |
| | auth01 ______| | | | | | | | | | | | | | | | | | | |______ auth01 | |
| | | eth0 =-[vif2.0]-+-+---/ | | | | | ________ _______| ___________ |_______ ________ | | | | | \---+-+-[viv2.0]-= eth0 | | |
| | |_____-| | \-----+-+-+-+-+-----| xenbr2 |-| peth2 =--| Internet |--= peth2 |-| xenbr2 |-----+-+-+-+-+-----/ | |-_____| | |
| | | \-------+-+-+-+-+-----| | |______-| | Polluted | |-______| | |-----+-+-+-+-+-------/ | | |
| | | | | | | | | | | | Switch | | | | | | | | | | | |
| | | | | | | | | | | |___________| | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | | | | | | | | _______________ |
| | web01 ______| | | | | | | | | [ Internet ] | | | | | | | | |______ web01 | |
| | | eth0 =-[vif3.0]---------/ | | | | | | | [ Connection ] | | | | | | | \---------[viv3.0]-= eth0 | | |
| | |_____-| | | | | |________| | | |________| | | | | |-_____| | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | _______________ |
| | web02 ______| | | | | | | | | | | |______ web02 | |
| | | eth0 =-[vif4.0]-----------/ | | | | | | | | \-----------[viv4.0]-= eth0 | | |
| | |_____-| | | | | | | | | |-_____| | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| |_______________| | | | | | | | | |_______________| |
| _______________ | | | | | | | | _______________ |
| | res01 ______| | | | | | | | | |______ res01 | |
| | | eth0 =-[vif5.0]-------------/ | | | | | | \-------------[viv5.0]-= eth0 | | |
| | |_____-| | | | | | | |-_____| | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| |_______________| | | | | | | |_______________| |
| _______________ | | | | | | _______________ |
| | dev01 ______| | | | | | | |______ dev01 | |
| | | eth0 =-[vif6.0]---------------/ | | | | \---------------[viv6.0]-= eth0 | | |
| | |_____-| | | | | |-_____| | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| |_______________| | | | | |_______________| |
| _______________ | | | | _______________ |
| | sql01 ______| | | | | |______ sql01 | |
| | | eth0 =-[vif7.0]-----------------/ | | \-----------------[viv7.0]-= eth0 | | |
| | |_____-| | | |-_____| | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| |_______________| | | |_______________| |
|_____________________________________________________________________| |_____________________________________________________________________|
</source>
---------------

It was written in LaTeX + PGF/TiKz. The (rather messy with weird naming convention) source is:

<source lang="tex">

\documentclass{a0poster}

\usepackage{multicol}
\usepackage{tikz}
\usepackage{graphicx}
\usetikzlibrary{positioning,shapes,snakes,matrix,backgrounds,fit,decorations.pathreplacing,calc}

\begin{document}

\tikzstyle{physical}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=5pt]
\tikzstyle{physicaltitle}= [draw=black, fill=black!10, thick, rectangle, rounded corners]
\tikzstyle{physicaloverlay}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=50pt, inner xsep=25pt]
\tikzstyle{abstract1}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners, inner ysep=18pt]
\tikzstyle{abstract1title}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners]
\tikzstyle{abstract2}= [draw=green, fill=green!20, thick, rectangle, rounded corners]

\begin{tikzpicture}

\matrix[row sep=0.75cm, column sep=1cm] {
&&&&&&&&& && &&& \node [physical] (backnet) {Back Channel Network};\\ $~$\\ $~$\\
\node [abstract2] (p1v0eth0) {eth0}; &&&&&&&&& [4cm] \node (p1xenbr0s0) {xenbr0}; && \node [abstract1] (p1peth0) {peth0}; &&& \node [physical] (backswc) {Back Channel Switch}; &&& \node [abstract1] (p2peth0) {peth0}; && \node (p2xenbr0s0) {xenbr0}; &&&&&&&&& \node [abstract2] (p2v0eth0) {eth0};\\
\node [abstract2] (p1v0eth1) {eth1}; &&&&&&&&& \node (p1xenbr0s1) { }; && &&& &&& && \node (p2xenbr0s1) { }; &&&&&&&&& \node [abstract2] (p2v0eth1) {eth1};\\
\node [abstract2] (p1v0eth2) {eth2}; &&&&&&&&& \node (p1xenbr0s2) { }; && &&& &&& && \node (p2xenbr0s2) { }; &&&&&&&&& \node [abstract2] (p2v0eth2) {eth2};\\
%
\\ \\ \node [abstract2] (p1v1eth0) {eth0}; &&&&&&&&& \node (p1xenbr1s0) {xenbr1}; && \node [abstract1] (p1peth1) {peth1}; &&& &&& \node [abstract1] (p2peth1) {peth1}; && \node (p2xenbr1s0) {xenbr1}; &&&&&&&&& \node [abstract2] (p2v1eth0) {eth0};\\
\node [abstract2] (p1v1eth1) {eth1}; &&&&&&&&& \node (p1xenbr1s1) { }; && &&& &&& && \node (p2xenbr1s1) { }; &&&&&&&&& \node [abstract2] (p2v1eth1) {eth1};\\
%
\\ \\ \node [abstract2] (p1v2eth0) {eth0}; &&&&&&&&& \node (p1xenbr2s0) {xenbr2}; && \node [abstract1] (p1peth2) {peth2}; &&& \node [physical] (iswitch) {Internet Connected Switch};&&& \node [abstract1] (p2peth2) {peth2}; && \node (p2xenbr2s0) {xenbr2}; &&&&&&&&& \node [abstract2] (p2v2eth0) {eth0};\\
\\ \\ \node [abstract2] (p1v3eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v3eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v4eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v4eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v5eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v5eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v6eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v6eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v7eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v7eth0) {eth0}; \\ $~$\\ $~$\\
&&&&&&&&& && &&& \node [physical] (internet) {Internet Connection}; \\
};

\begin{pgfonlayer}{background}
\node [physicaloverlay] (node0)[fit= (p1v0eth0) (p1v7eth0) (p1peth2)] { };
\node [physicaltitle] at (node0.north) {node01};
\node [abstract1] (p1v0)[fit= (p1v0eth0) (p1v0eth2)] { };
\node [abstract1title] at (p1v0.north) {dom0};
\node [abstract1] (p1v1)[fit= (p1v1eth0) (p1v1eth1)] { };
\node [abstract1title] at (p1v1.north) {fw01};
\node [abstract1] (p1v2)[fit= (p1v2eth0)] { };
\node [abstract1title] at (p1v2.north) {auth01};
\node [abstract1] (p1v3)[fit= (p1v3eth0)] { };
\node [abstract1title] at (p1v3.north) {web01};
\node [abstract1] (p1v4)[fit= (p1v4eth0)] { };
\node [abstract1title] at (p1v4.north) {web02};
\node [abstract1] (p1v5)[fit= (p1v5eth0)] { };
\node [abstract1title] at (p1v5.north) {res01};
\node [abstract1] (p1v6)[fit= (p1v6eth0)] { };
\node [abstract1title] at (p1v6.north) {dev01};
\node [abstract1] (p1v7)[fit= (p1v7eth0)] { };
\node [abstract1title] at (p1v7.north) {sql01};

\node [physicaloverlay] (node1)[fit= (p2v0eth0) (p2v7eth0) (p2peth2)] { };
\node [physicaltitle] at (node1.north) {node02};
\node [abstract1] (p2v0)[fit=(p2v0eth0) (p2v0eth2)] { };
\node [abstract1title] at (p2v0.north) {dom0};
\node [abstract1] (p2v1)[fit=(p2v1eth0) (p2v1eth1)] { };
\node [abstract1title] at (p2v1.north) {fw01};
\node [abstract1] (p2v2)[fit=(p2v2eth0)] { };
\node [abstract1title] at (p2v2.north) {auth01};
\node [abstract1] (p2v3)[fit=(p2v3eth0)] { };
\node [abstract1title] at (p2v3.north) {web01};
\node [abstract1] (p2v4)[fit=(p2v4eth0)] { };
\node [abstract1title] at (p2v4.north) {web02};
\node [abstract1] (p2v5)[fit=(p2v5eth0)] { };
\node [abstract1title] at (p2v5.north) {res01};
\node [abstract1] (p2v6)[fit=(p2v6eth0)] { };
\node [abstract1title] at (p2v6.north) {dev01};
\node [abstract1] (p2v7)[fit=(p2v7eth0)] { };
\node [abstract1title] at (p2v7.north) {sql01};

\node [abstract1] (p1xenbr0)[fit= (p1xenbr0s0) (p1xenbr0s2)] { };
\node [abstract1] (p1xenbr1)[fit= (p1xenbr1s0) ] { };
\node [abstract1] (p1xenbr2)[fit= (p1xenbr2s0)] { };

\node [abstract1] (p2xenbr0)[fit= (p2xenbr0s0) (p2xenbr0s2)] { };
\node [abstract1] (p2xenbr1)[fit= (p2xenbr1s0) ] { };
\node [abstract1] (p2xenbr2)[fit= (p2xenbr2s0)] { };

\end{pgfonlayer}

\draw [thick] (p1v0eth0.east) -- +(3,0) node[midway,below] {vif0.0} -- ($(p1xenbr0.west)+(0,1.98)$);
\draw [thick] (p1v1eth0.east) -- +(3,0) node[midway,below] {vif1.0} -- ($(p1xenbr0.west)+(0,1.5)$);
\draw [thick] (p1v2eth0.east) -- +(3,0) node[midway,below] {vif2.0} -- ($(p1xenbr0.west)+(0,1)$);
\draw [thick] (p1v3eth0.east) -- +(3,0) node[midway,below] {vif3.0} -- ($(p1xenbr0.west)+(0,0.5)$);
\draw [thick] (p1v4eth0.east) -- +(3,0) node[midway,below] {vif4.0} -- (p1xenbr0.west);
\draw [thick] (p1v5eth0.east) -- +(3,0) node[midway,below] {vif5.0} -- ($(p1xenbr0.west)+(0,-0.5)$);
\draw [thick] (p1v6eth0.east) -- +(3,0) node[midway,below] {vif6.0} -- ($(p1xenbr0.west)+(0,-1)$);
\draw [thick] (p1v7eth0.east) -- +(3,0) node[midway,below] {vif7.0} -- ($(p1xenbr0.west)+(0,-1.5)$);
\draw [thick] ($(p1xenbr0.east)+(0,1.98)$) -- (p1peth0.west);
\draw [thick] (p1peth0.east) -- (backswc.west);

\draw [thick] (p2v0eth0.west) -- +(-3,0) node[midway,below] {vif0.0} -- ($(p2xenbr0.east)+(0,1.98)$);
\draw [thick] (p2v1eth0.west) -- +(-3,0) node[midway,below] {vif1.0} -- ($(p2xenbr0.east)+(0,1.5)$);
\draw [thick] (p2v2eth0.west) -- +(-3,0) node[midway,below] {vif2.0} -- ($(p2xenbr0.east)+(0,1)$);
\draw [thick] (p2v3eth0.west) -- +(-3,0) node[midway,below] {vif3.0} -- ($(p2xenbr0.east)+(0,0.5)$);
\draw [thick] (p2v4eth0.west) -- +(-3,0) node[midway,below] {vif4.0} -- (p2xenbr0.east);
\draw [thick] (p2v5eth0.west) -- +(-3,0) node[midway,below] {vif5.0} -- ($(p2xenbr0.east)+(0,-0.5)$);
\draw [thick] (p2v6eth0.west) -- +(-3,0) node[midway,below] {vif6.0} -- ($(p2xenbr0.east)+(0,-1)$);
\draw [thick] (p2v7eth0.west) -- +(-3,0) node[midway,below] {vif7.0} -- ($(p2xenbr0.east)+(0,-1.5)$);
\draw [thick] ($(p2xenbr0.west)+(0,1.98)$) -- (p2peth0.east);
\draw [thick] (p2peth0.west) -- (backswc.east);

\draw [thick] (backswc.north) -- (backnet.south);

\draw [thick] (p1v0eth1.east) -- +(3,0) node[midway,below] {vif0.1} -- (p1xenbr1.west)+(0,0.5);
\draw [thick] (p1v1eth1.east) -- +(3,0) node[midway,below] {vif1.2} -- ($(p1xenbr2.west)+(0,-0.5)$);
\draw [thick] (p1xenbr1.east) -- (p1peth1.west);
\draw [thick] (p1peth1.east) -- (p2peth1.west) node [midway,below] {DRBD Link};
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2v0eth1.west) -- +(-3,0) node[midway,below] {vif0.1} -- (p2xenbr1.east);
\draw [thick] (p2v1eth1.west) -- +(-3,0) node[midway,below] {vif1.2} -- ($(p2xenbr2.east)+(0,-0.5)$);

\draw [thick] (p1v0eth2.east) -- +(3,0) node[midway,below] {vif0.2} -- ($(p1xenbr2.west)+(0,0.5)$);
\draw [thick] (p1xenbr2.east) -- (p1peth2.west);
\draw [thick] (p1peth2.east) -- (iswitch.west);
\draw [thick] (p2v0eth2.west) -- +(-3,0) node[midway,below] {vif0.2} -- ($(p2xenbr2.east)+(0,0.5)$);
\draw [thick] (p2xenbr2.west) -- (p2peth2.east);
\draw [thick] (p2peth2.west) -- (iswitch.east);
\draw [thick] (iswitch.south) -- (internet.north);

\end{tikzpicture}

\end{document}
</source>
{footer}

Sample Xen 3.x 2-node Cluster Network Map

2010-05-25T04:53:22Z

Colah: Smaller Image.

{{howto_header}}

[[Networking in Xen]]

[[File:SampleXen2NodeClusterMap.png|800px|Map of a Sample 2-node Cluster]]

{{footer}}

File:SampleXen2NodeClusterMap.png

2010-05-25T04:48:12Z

Colah: uploaded a new version of "File:SampleXen2NodeClusterMap.png": scaled 1/4.

A pretty map of a 2-node cluster, based on the following ASCII diagram:
------

[ Back ]
[ Channel ]
_[_Node01_]__________________________________________________________ [ Network ] __________________________________________________________[_Node02_]_
| _______________ | | | _______________ |
| | dom0 ______| ________ _______| _____|_____ |_______ ________ |______ dom0 | |
| | | eth0 =-[vif0.0]-----------------------| xenbr0 |-| peth0 =--| Back |--= peth0 |-| xenbr0 |-----------------------[vif0.0]-= eth0 | | |
| | |_____-| /-----------------| | |______-| | Channel | |-______| | |-----------------\ |-_____| | |
| | | | /---------------| | | | switch | | | |---------------\ | | | |
| | ______| | | /-------------| | | |___________| | | |-------------\ | | |______ | |
| | | eth1 =-[vif0.1]---\ | | | /-----------| | | | | |-----------\ | | | /---[vif0.1]-= eth1 | | |
| | |_____-| | | | | | /---------| | | | | |---------\ | | | | | |-_____| | |
| | | | | | | | | /-------| | | | | |-------\ | | | | | | | | |
| | ______| | | | | | | | /-----| | | | | |-----\ | | | | | | | |______ | |
| | | eth2 =-[vif0.2]-\ | | | | | | | | | | | | | | | | | | | | | | /-[vif0.2]-= eth2 | | |
| | |_____-| | | | | | | | | | |________| | | |________| | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | ________ _______| |_______ ________ | | | | | | | | | _______________ |
| | fw01 ______| | \-+-+-+-+-+-+-+-----| xenbr1 |-| peth1 =-----------------= peth1 |-| xenbr1 |-----+-+-+-+-+-+-+-/ | |______ fw01 | |
| | | eth0 =-[vif1.0]-+---/ | | | | | | | | |______-| [ DRBD Link ] |-______| | | | | | | | | \---+-[vif1.0]-= eth0 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | |-_____| | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | ______| \-\ | | | | | | | | | | | | | | | | | | /-/ |______ | |
| | | eth1 =-[vif1.2]-\ | | | | | | | | | | | | | | | | | | | | /-[viv1.2]-= eth1 | | |
| | |_____-| | | | | | | | | | | | | | | | | | | | | | | |-_____| | |
| |_______________| | | | | | | | | | | | | | | | | | | | | | | |_______________| |
| | | | | | | | | | | | | | | | | | | | | | | |
| _______________ | | | | | | | | |________| | | |________| | | | | | | | | _______________ |
| | auth01 ______| | | | | | | | | | | | | | | | | | | |______ auth01 | |
| | | eth0 =-[vif2.0]-+-+---/ | | | | | ________ _______| ___________ |_______ ________ | | | | | \---+-+-[viv2.0]-= eth0 | | |
| | |_____-| | \-----+-+-+-+-+-----| xenbr2 |-| peth2 =--| Internet |--= peth2 |-| xenbr2 |-----+-+-+-+-+-----/ | |-_____| | |
| | | \-------+-+-+-+-+-----| | |______-| | Polluted | |-______| | |-----+-+-+-+-+-------/ | | |
| | | | | | | | | | | | Switch | | | | | | | | | | | |
| | | | | | | | | | | |___________| | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | | | | | | | | _______________ |
| | web01 ______| | | | | | | | | [ Internet ] | | | | | | | | |______ web01 | |
| | | eth0 =-[vif3.0]---------/ | | | | | | | [ Connection ] | | | | | | | \---------[viv3.0]-= eth0 | | |
| | |_____-| | | | | |________| | | |________| | | | | |-_____| | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
| |_______________| | | | | | | | | | | |_______________| |
| _______________ | | | | | | | | | | _______________ |
| | web02 ______| | | | | | | | | | | |______ web02 | |
| | | eth0 =-[vif4.0]-----------/ | | | | | | | | \-----------[viv4.0]-= eth0 | | |
| | |_____-| | | | | | | | | |-_____| | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| |_______________| | | | | | | | | |_______________| |
| _______________ | | | | | | | | _______________ |
| | res01 ______| | | | | | | | | |______ res01 | |
| | | eth0 =-[vif5.0]-------------/ | | | | | | \-------------[viv5.0]-= eth0 | | |
| | |_____-| | | | | | | |-_____| | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | |
| |_______________| | | | | | | |_______________| |
| _______________ | | | | | | _______________ |
| | dev01 ______| | | | | | | |______ dev01 | |
| | | eth0 =-[vif6.0]---------------/ | | | | \---------------[viv6.0]-= eth0 | | |
| | |_____-| | | | | |-_____| | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | |
| |_______________| | | | | |_______________| |
| _______________ | | | | _______________ |
| | sql01 ______| | | | | |______ sql01 | |
| | | eth0 =-[vif7.0]-----------------/ | | \-----------------[viv7.0]-= eth0 | | |
| | |_____-| | | |-_____| | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| |_______________| | | |_______________| |
|_____________________________________________________________________| |_____________________________________________________________________|

---------------

It was written in LaTeX + PGF/TiKz. The (rather messy with weird naming convention) source is:

\documentclass{a0poster}

\usepackage{multicol}
\usepackage{tikz}
\usepackage{graphicx}
\usetikzlibrary{positioning,shapes,snakes,matrix,backgrounds,fit,decorations.pathreplacing,calc}

\begin{document}

\tikzstyle{physical}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=5pt]
\tikzstyle{physicaltitle}= [draw=black, fill=black!10, thick, rectangle, rounded corners]
\tikzstyle{physicaloverlay}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=50pt, inner xsep=25pt]
\tikzstyle{abstract1}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners, inner ysep=18pt]
\tikzstyle{abstract1title}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners]
\tikzstyle{abstract2}= [draw=green, fill=green!20, thick, rectangle, rounded corners]

\begin{tikzpicture}

\matrix[row sep=0.75cm, column sep=1cm] {
&&&&&&&&& && &&& \node [physical] (backnet) {Back Channel Network};\\ $~$\\ $~$\\
\node [abstract2] (p1v0eth0) {eth0}; &&&&&&&&& [4cm] \node (p1xenbr0s0) {xenbr0}; && \node [abstract1] (p1peth0) {peth0}; &&& \node [physical] (backswc) {Back Channel Switch}; &&& \node [abstract1] (p2peth0) {peth0}; && \node (p2xenbr0s0) {xenbr0}; &&&&&&&&& \node [abstract2] (p2v0eth0) {eth0};\\
\node [abstract2] (p1v0eth1) {eth1}; &&&&&&&&& \node (p1xenbr0s1) { }; && &&& &&& && \node (p2xenbr0s1) { }; &&&&&&&&& \node [abstract2] (p2v0eth1) {eth1};\\
\node [abstract2] (p1v0eth2) {eth2}; &&&&&&&&& \node (p1xenbr0s2) { }; && &&& &&& && \node (p2xenbr0s2) { }; &&&&&&&&& \node [abstract2] (p2v0eth2) {eth2};\\
%
\\ \\ \node [abstract2] (p1v1eth0) {eth0}; &&&&&&&&& \node (p1xenbr1s0) {xenbr1}; && \node [abstract1] (p1peth1) {peth1}; &&& &&& \node [abstract1] (p2peth1) {peth1}; && \node (p2xenbr1s0) {xenbr1}; &&&&&&&&& \node [abstract2] (p2v1eth0) {eth0};\\
\node [abstract2] (p1v1eth1) {eth1}; &&&&&&&&& \node (p1xenbr1s1) { }; && &&& &&& && \node (p2xenbr1s1) { }; &&&&&&&&& \node [abstract2] (p2v1eth1) {eth1};\\
%
\\ \\ \node [abstract2] (p1v2eth0) {eth0}; &&&&&&&&& \node (p1xenbr2s0) {xenbr2}; && \node [abstract1] (p1peth2) {peth2}; &&& \node [physical] (iswitch) {Internet Connected Switch};&&& \node [abstract1] (p2peth2) {peth2}; && \node (p2xenbr2s0) {xenbr2}; &&&&&&&&& \node [abstract2] (p2v2eth0) {eth0};\\
\\ \\ \node [abstract2] (p1v3eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v3eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v4eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v4eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v5eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v5eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v6eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v6eth0) {eth0}; \\
\\ \\ \node [abstract2] (p1v7eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v7eth0) {eth0}; \\ $~$\\ $~$\\
&&&&&&&&& && &&& \node [physical] (internet) {Internet Connection}; \\
};

\begin{pgfonlayer}{background}
\node [physicaloverlay] (node0)[fit= (p1v0eth0) (p1v7eth0) (p1peth2)] { };
\node [physicaltitle] at (node0.north) {node01};
\node [abstract1] (p1v0)[fit= (p1v0eth0) (p1v0eth2)] { };
\node [abstract1title] at (p1v0.north) {dom0};
\node [abstract1] (p1v1)[fit= (p1v1eth0) (p1v1eth1)] { };
\node [abstract1title] at (p1v1.north) {fw01};
\node [abstract1] (p1v2)[fit= (p1v2eth0)] { };
\node [abstract1title] at (p1v2.north) {auth01};
\node [abstract1] (p1v3)[fit= (p1v3eth0)] { };
\node [abstract1title] at (p1v3.north) {web01};
\node [abstract1] (p1v4)[fit= (p1v4eth0)] { };
\node [abstract1title] at (p1v4.north) {web02};
\node [abstract1] (p1v5)[fit= (p1v5eth0)] { };
\node [abstract1title] at (p1v5.north) {res01};
\node [abstract1] (p1v6)[fit= (p1v6eth0)] { };
\node [abstract1title] at (p1v6.north) {dev01};
\node [abstract1] (p1v7)[fit= (p1v7eth0)] { };
\node [abstract1title] at (p1v7.north) {sql01};

\node [physicaloverlay] (node1)[fit= (p2v0eth0) (p2v7eth0) (p2peth2)] { };
\node [physicaltitle] at (node1.north) {node02};
\node [abstract1] (p2v0)[fit=(p2v0eth0) (p2v0eth2)] { };
\node [abstract1title] at (p2v0.north) {dom0};
\node [abstract1] (p2v1)[fit=(p2v1eth0) (p2v1eth1)] { };
\node [abstract1title] at (p2v1.north) {fw01};
\node [abstract1] (p2v2)[fit=(p2v2eth0)] { };
\node [abstract1title] at (p2v2.north) {auth01};
\node [abstract1] (p2v3)[fit=(p2v3eth0)] { };
\node [abstract1title] at (p2v3.north) {web01};
\node [abstract1] (p2v4)[fit=(p2v4eth0)] { };
\node [abstract1title] at (p2v4.north) {web02};
\node [abstract1] (p2v5)[fit=(p2v5eth0)] { };
\node [abstract1title] at (p2v5.north) {res01};
\node [abstract1] (p2v6)[fit=(p2v6eth0)] { };
\node [abstract1title] at (p2v6.north) {dev01};
\node [abstract1] (p2v7)[fit=(p2v7eth0)] { };
\node [abstract1title] at (p2v7.north) {sql01};

\node [abstract1] (p1xenbr0)[fit= (p1xenbr0s0) (p1xenbr0s2)] { };
\node [abstract1] (p1xenbr1)[fit= (p1xenbr1s0) ] { };
\node [abstract1] (p1xenbr2)[fit= (p1xenbr2s0)] { };

\node [abstract1] (p2xenbr0)[fit= (p2xenbr0s0) (p2xenbr0s2)] { };
\node [abstract1] (p2xenbr1)[fit= (p2xenbr1s0) ] { };
\node [abstract1] (p2xenbr2)[fit= (p2xenbr2s0)] { };

\end{pgfonlayer}

\draw [thick] (p1v0eth0.east) -- +(3,0) node[midway,below] {vif0.0} -- ($(p1xenbr0.west)+(0,1.98)$);
\draw [thick] (p1v1eth0.east) -- +(3,0) node[midway,below] {vif1.0} -- ($(p1xenbr0.west)+(0,1.5)$);
\draw [thick] (p1v2eth0.east) -- +(3,0) node[midway,below] {vif2.0} -- ($(p1xenbr0.west)+(0,1)$);
\draw [thick] (p1v3eth0.east) -- +(3,0) node[midway,below] {vif3.0} -- ($(p1xenbr0.west)+(0,0.5)$);
\draw [thick] (p1v4eth0.east) -- +(3,0) node[midway,below] {vif4.0} -- (p1xenbr0.west);
\draw [thick] (p1v5eth0.east) -- +(3,0) node[midway,below] {vif5.0} -- ($(p1xenbr0.west)+(0,-0.5)$);
\draw [thick] (p1v6eth0.east) -- +(3,0) node[midway,below] {vif6.0} -- ($(p1xenbr0.west)+(0,-1)$);
\draw [thick] (p1v7eth0.east) -- +(3,0) node[midway,below] {vif7.0} -- ($(p1xenbr0.west)+(0,-1.5)$);
\draw [thick] ($(p1xenbr0.east)+(0,1.98)$) -- (p1peth0.west);
\draw [thick] (p1peth0.east) -- (backswc.west);

\draw [thick] (p2v0eth0.west) -- +(-3,0) node[midway,below] {vif0.0} -- ($(p2xenbr0.east)+(0,1.98)$);
\draw [thick] (p2v1eth0.west) -- +(-3,0) node[midway,below] {vif1.0} -- ($(p2xenbr0.east)+(0,1.5)$);
\draw [thick] (p2v2eth0.west) -- +(-3,0) node[midway,below] {vif2.0} -- ($(p2xenbr0.east)+(0,1)$);
\draw [thick] (p2v3eth0.west) -- +(-3,0) node[midway,below] {vif3.0} -- ($(p2xenbr0.east)+(0,0.5)$);
\draw [thick] (p2v4eth0.west) -- +(-3,0) node[midway,below] {vif4.0} -- (p2xenbr0.east);
\draw [thick] (p2v5eth0.west) -- +(-3,0) node[midway,below] {vif5.0} -- ($(p2xenbr0.east)+(0,-0.5)$);
\draw [thick] (p2v6eth0.west) -- +(-3,0) node[midway,below] {vif6.0} -- ($(p2xenbr0.east)+(0,-1)$);
\draw [thick] (p2v7eth0.west) -- +(-3,0) node[midway,below] {vif7.0} -- ($(p2xenbr0.east)+(0,-1.5)$);
\draw [thick] ($(p2xenbr0.west)+(0,1.98)$) -- (p2peth0.east);
\draw [thick] (p2peth0.west) -- (backswc.east);

\draw [thick] (backswc.north) -- (backnet.south);

\draw [thick] (p1v0eth1.east) -- +(3,0) node[midway,below] {vif0.1} -- (p1xenbr1.west)+(0,0.5);
\draw [thick] (p1v1eth1.east) -- +(3,0) node[midway,below] {vif1.2} -- ($(p1xenbr2.west)+(0,-0.5)$);
\draw [thick] (p1xenbr1.east) -- (p1peth1.west);
\draw [thick] (p1peth1.east) -- (p2peth1.west) node [midway,below] {DRBD Link};
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2xenbr1.west) -- (p2peth1.east);
\draw [thick] (p2v0eth1.west) -- +(-3,0) node[midway,below] {vif0.1} -- (p2xenbr1.east);
\draw [thick] (p2v1eth1.west) -- +(-3,0) node[midway,below] {vif1.2} -- ($(p2xenbr2.east)+(0,-0.5)$);

\draw [thick] (p1v0eth2.east) -- +(3,0) node[midway,below] {vif0.2} -- ($(p1xenbr2.west)+(0,0.5)$);
\draw [thick] (p1xenbr2.east) -- (p1peth2.west);
\draw [thick] (p1peth2.east) -- (iswitch.west);
\draw [thick] (p2v0eth2.west) -- +(-3,0) node[midway,below] {vif0.2} -- ($(p2xenbr2.east)+(0,0.5)$);
\draw [thick] (p2xenbr2.west) -- (p2peth2.east);
\draw [thick] (p2peth2.west) -- (iswitch.east);
\draw [thick] (iswitch.south) -- (internet.north);

\end{tikzpicture}

\end{document}

File:SampleXen2NodeClusterMap.png

2010-05-25T04:41:53Z

Colah: uploaded a new version of "File:SampleXen2NodeClusterMap.png": No transparency.

Sample Xen 3.x 2-node Cluster Network Map

2010-05-25T04:36:39Z

Colah: Replaces ASCII image with pretty picture!

{{howto_header}}

[[Networking in Xen]]

[[File:SampleXen2NodeClusterMap.png]]

{{footer}}

File:SampleXen2NodeClusterMap.png

2010-05-25T04:33:44Z

Colah: A pretty map of a 2-node cluster, based on the following ASCII diagram: ------ [ Back ] [ Channel ] _[_Node01_]__________________________________________________________ [ Network ] __________________________________________________________[_Node02_]_ | _______________ | | | _______________ | | | dom0 ______| ________ _______| _____|_____ |_______ ________ |______ dom0 | | | | | eth0 =-[vif0.0]-----------------------| xenbr0 |-| peth0 =--| Back |--= peth0 |-| xenbr0 |-----------------------[vif0.0]-= eth0 | | | | | |_____-| /-----------------| | |______-| | Channel | |-______| | |-----------------\ |-_____| | | | | | | /---------------| | | | switch | | | |---------------\ | | | | | | ______| | | /-------------| | | |___________| | | |-------------\ | | |______ | | | | | eth1 =-[vif0.1]---\ | | | /-----------| | | | | |-----------\ | | | /---[vif0.1]-= eth1 | | | | | |_____-| | | | | | /---------| | | | | |---------\ | | | | | |-_____| | | | | | | | | | | | /-------| | | | | |-------\ | | | | | | | | | | | ______| | | | | | | | /-----| | | | | |-----\ | | | | | | | |______ | | | | | eth2 =-[vif0.2]-\ | | | | | | | | | | | | | | | | | | | | | | /-[vif0.2]-= eth2 | | | | | |_____-| | | | | | | | | | |________| | | |________| | | | | | | | | | |-_____| | | | |_______________| | | | | | | | | | | | | | | | | | | | | |_______________| | | _______________ | | | | | | | | | ________ _______| |_______ ________ | | | | | | | | | _______________ | | | fw01 ______| | \-+-+-+-+-+-+-+-----| xenbr1 |-| peth1 =-----------------= peth1 |-| xenbr1 |-----+-+-+-+-+-+-+-/ | |______ fw01 | | | | | eth0 =-[vif1.0]-+---/ | | | | | | | | |______-| [ DRBD Link ] |-______| | | | | | | | | \---+-[vif1.0]-= eth0 | | | | | |_____-| | | | | | | | | | | | | | | | | | | | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ______| \-\ | | | | | | | | | | | | | | | | | | /-/ |______ | | | | | eth1 =-[vif1.2]-\ | | | | | | | | | | | | | | | | | | | | /-[viv1.2]-= eth1 | | | | | |_____-| | | | | | | | | | | | | | | | | | | | | | | |-_____| | | | |_______________| | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | | | | | | | | | | | | | | | | | | | | | | | _______________ | | | | | | | | |________| | | |________| | | | | | | | | _______________ | | | auth01 ______| | | | | | | | | | | | | | | | | | | |______ auth01 | | | | | eth0 =-[vif2.0]-+-+---/ | | | | | ________ _______| ___________ |_______ ________ | | | | | \---+-+-[viv2.0]-= eth0 | | | | | |_____-| | \-----+-+-+-+-+-----| xenbr2 |-| peth2 =--| Internet |--= peth2 |-| xenbr2 |-----+-+-+-+-+-----/ | |-_____| | | | | | \-------+-+-+-+-+-----| | |______-| | Polluted | |-______| | |-----+-+-+-+-+-------/ | | | | | | | | | | | | | | | Switch | | | | | | | | | | | | | | | | | | | | | | | |___________| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | | | | | | | | | | | | | | |_______________| | | _______________ | | | | | | | | | | | | | | | | | _______________ | | | web01 ______| | | | | | | | | [ Internet ] | | | | | | | | |______ web01 | | | | | eth0 =-[vif3.0]---------/ | | | | | | | [ Connection ] | | | | | | | \---------[viv3.0]-= eth0 | | | | | |_____-| | | | | |________| | | |________| | | | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | | | | | | | |_______________| | | _______________ | | | | | | | | | | _______________ | | | web02 ______| | | | | | | | | | | |______ web02 | | | | | eth0 =-[vif4.0]-----------/ | | | | | | | | \-----------[viv4.0]-= eth0 | | | | | |_____-| | | | | | | | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | | | | | |_______________| | | _______________ | | | | | | | | _______________ | | | res01 ______| | | | | | | | | |______ res01 | | | | | eth0 =-[vif5.0]-------------/ | | | | | | \-------------[viv5.0]-= eth0 | | | | | |_____-| | | | | | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | | | |_______________| | | _______________ | | | | | | _______________ | | | dev01 ______| | | | | | | |______ dev01 | | | | | eth0 =-[vif6.0]---------------/ | | | | \---------------[viv6.0]-= eth0 | | | | | |_____-| | | | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | | | |_______________| | | _______________ | | | | _______________ | | | sql01 ______| | | | | |______ sql01 | | | | | eth0 =-[vif7.0]-----------------/ | | \-----------------[viv7.0]-= eth0 | | | | | |_____-| | | |-_____| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_______________| | | |_______________| | |_____________________________________________________________________| |_____________________________________________________________________| --------------- It was written in LaTeX + PGF/TiKz. The (rather messy with weird naming convention) source is: \documentclass{a0poster} \usepackage{multicol} \usepackage{tikz} \usepackage{graphicx} \usetikzlibrary{positioning,shapes,snakes,matrix,backgrounds,fit,decorations.pathreplacing,calc} \begin{document} \tikzstyle{physical}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=5pt] \tikzstyle{physicaltitle}= [draw=black, fill=black!10, thick, rectangle, rounded corners] \tikzstyle{physicaloverlay}= [draw=black, fill=black!10, thick, rectangle, rounded corners, inner ysep=50pt, inner xsep=25pt] \tikzstyle{abstract1}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners, inner ysep=18pt] \tikzstyle{abstract1title}= [draw=blue, fill=blue!20, thick, rectangle, rounded corners] \tikzstyle{abstract2}= [draw=green, fill=green!20, thick, rectangle, rounded corners] \begin{tikzpicture} \matrix[row sep=0.75cm, column sep=1cm] { &&&&&&&&& && &&& \node [physical] (backnet) {Back Channel Network};\\ $~$\\ $~$\\ \node [abstract2] (p1v0eth0) {eth0}; &&&&&&&&& [4cm] \node (p1xenbr0s0) {xenbr0}; && \node [abstract1] (p1peth0) {peth0}; &&& \node [physical] (backswc) {Back Channel Switch}; &&& \node [abstract1] (p2peth0) {peth0}; && \node (p2xenbr0s0) {xenbr0}; &&&&&&&&& \node [abstract2] (p2v0eth0) {eth0};\\ \node [abstract2] (p1v0eth1) {eth1}; &&&&&&&&& \node (p1xenbr0s1) { }; && &&& &&& && \node (p2xenbr0s1) { }; &&&&&&&&& \node [abstract2] (p2v0eth1) {eth1};\\ \node [abstract2] (p1v0eth2) {eth2}; &&&&&&&&& \node (p1xenbr0s2) { }; && &&& &&& && \node (p2xenbr0s2) { }; &&&&&&&&& \node [abstract2] (p2v0eth2) {eth2};\\ % \\ \\ \node [abstract2] (p1v1eth0) {eth0}; &&&&&&&&& \node (p1xenbr1s0) {xenbr1}; && \node [abstract1] (p1peth1) {peth1}; &&& &&& \node [abstract1] (p2peth1) {peth1}; && \node (p2xenbr1s0) {xenbr1}; &&&&&&&&& \node [abstract2] (p2v1eth0) {eth0};\\ \node [abstract2] (p1v1eth1) {eth1}; &&&&&&&&& \node (p1xenbr1s1) { }; && &&& &&& && \node (p2xenbr1s1) { }; &&&&&&&&& \node [abstract2] (p2v1eth1) {eth1};\\ % \\ \\ \node [abstract2] (p1v2eth0) {eth0}; &&&&&&&&& \node (p1xenbr2s0) {xenbr2}; && \node [abstract1] (p1peth2) {peth2}; &&& \node [physical] (iswitch) {Internet Connected Switch};&&& \node [abstract1] (p2peth2) {peth2}; && \node (p2xenbr2s0) {xenbr2}; &&&&&&&&& \node [abstract2] (p2v2eth0) {eth0};\\ \\ \\ \node [abstract2] (p1v3eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v3eth0) {eth0}; \\ \\ \\ \node [abstract2] (p1v4eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v4eth0) {eth0}; \\ \\ \\ \node [abstract2] (p1v5eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v5eth0) {eth0}; \\ \\ \\ \node [abstract2] (p1v6eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v6eth0) {eth0}; \\ \\ \\ \node [abstract2] (p1v7eth0) {eth0}; &&&&&&&&& && &&& &&& && &&&&&&&&& \node [abstract2] (p2v7eth0) {eth0}; \\ $~$\\ $~$\\ &&&&&&&&& && &&& \node [physical] (internet) {Internet Connection}; \\ }; \begin{pgfonlayer}{background} \node [physicaloverlay] (node0)[fit= (p1v0eth0) (p1v7eth0) (p1peth2)] { }; \node [physicaltitle] at (node0.north) {node01}; \node [abstract1] (p1v0)[fit= (p1v0eth0) (p1v0eth2)] { }; \node [abstract1title] at (p1v0.north) {dom0}; \node [abstract1] (p1v1)[fit= (p1v1eth0) (p1v1eth1)] { }; \node [abstract1title] at (p1v1.north) {fw01}; \node [abstract1] (p1v2)[fit= (p1v2eth0)] { }; \node [abstract1title] at (p1v2.north) {auth01}; \node [abstract1] (p1v3)[fit= (p1v3eth0)] { }; \node [abstract1title] at (p1v3.north) {web01}; \node [abstract1] (p1v4)[fit= (p1v4eth0)] { }; \node [abstract1title] at (p1v4.north) {web02}; \node [abstract1] (p1v5)[fit= (p1v5eth0)] { }; \node [abstract1title] at (p1v5.north) {res01}; \node [abstract1] (p1v6)[fit= (p1v6eth0)] { }; \node [abstract1title] at (p1v6.north) {dev01}; \node [abstract1] (p1v7)[fit= (p1v7eth0)] { }; \node [abstract1title] at (p1v7.north) {sql01}; \node [physicaloverlay] (node1)[fit= (p2v0eth0) (p2v7eth0) (p2peth2)] { }; \node [physicaltitle] at (node1.north) {node02}; \node [abstract1] (p2v0)[fit=(p2v0eth0) (p2v0eth2)] { }; \node [abstract1title] at (p2v0.north) {dom0}; \node [abstract1] (p2v1)[fit=(p2v1eth0) (p2v1eth1)] { }; \node [abstract1title] at (p2v1.north) {fw01}; \node [abstract1] (p2v2)[fit=(p2v2eth0)] { }; \node [abstract1title] at (p2v2.north) {auth01}; \node [abstract1] (p2v3)[fit=(p2v3eth0)] { }; \node [abstract1title] at (p2v3.north) {web01}; \node [abstract1] (p2v4)[fit=(p2v4eth0)] { }; \node [abstract1title] at (p2v4.north) {web02}; \node [abstract1] (p2v5)[fit=(p2v5eth0)] { }; \node [abstract1title] at (p2v5.north) {res01}; \node [abstract1] (p2v6)[fit=(p2v6eth0)] { }; \node [abstract1title] at (p2v6.north) {dev01}; \node [abstract1] (p2v7)[fit=(p2v7eth0)] { }; \node [abstract1title] at (p2v7.north) {sql01}; \node [abstract1] (p1xenbr0)[fit= (p1xenbr0s0) (p1xenbr0s2)] { }; \node [abstract1] (p1xenbr1)[fit= (p1xenbr1s0) ] { }; \node [abstract1] (p1xenbr2)[fit= (p1xenbr2s0)] { }; \node [abstract1] (p2xenbr0)[fit= (p2xenbr0s0) (p2xenbr0s2)] { }; \node [abstract1] (p2xenbr1)[fit= (p2xenbr1s0) ] { }; \node [abstract1] (p2xenbr2)[fit= (p2xenbr2s0)] { }; \end{pgfonlayer} \draw [thick] (p1v0eth0.east) -- +(3,0) node[midway,below] {vif0.0} -- ($(p1xenbr0.west)+(0,1.98)$); \draw [thick] (p1v1eth0.east) -- +(3,0) node[midway,below] {vif1.0} -- ($(p1xenbr0.west)+(0,1.5)$); \draw [thick] (p1v2eth0.east) -- +(3,0) node[midway,below] {vif2.0} -- ($(p1xenbr0.west)+(0,1)$); \draw [thick] (p1v3eth0.east) -- +(3,0) node[midway,below] {vif3.0} -- ($(p1xenbr0.west)+(0,0.5)$); \draw [thick] (p1v4eth0.east) -- +(3,0) node[midway,below] {vif4.0} -- (p1xenbr0.west); \draw [thick] (p1v5eth0.east) -- +(3,0) node[midway,below] {vif5.0} -- ($(p1xenbr0.west)+(0,-0.5)$); \draw [thick] (p1v6eth0.east) -- +(3,0) node[midway,below] {vif6.0} -- ($(p1xenbr0.west)+(0,-1)$); \draw [thick] (p1v7eth0.east) -- +(3,0) node[midway,below] {vif7.0} -- ($(p1xenbr0.west)+(0,-1.5)$); \draw [thick] ($(p1xenbr0.east)+(0,1.98)$) -- (p1peth0.west); \draw [thick] (p1peth0.east) -- (backswc.west); \draw [thick] (p2v0eth0.west) -- +(-3,0) node[midway,below] {vif0.0} -- ($(p2xenbr0.east)+(0,1.98)$); \draw [thick] (p2v1eth0.west) -- +(-3,0) node[midway,below] {vif1.0} -- ($(p2xenbr0.east)+(0,1.5)$); \draw [thick] (p2v2eth0.west) -- +(-3,0) node[midway,below] {vif2.0} -- ($(p2xenbr0.east)+(0,1)$); \draw [thick] (p2v3eth0.west) -- +(-3,0) node[midway,below] {vif3.0} -- ($(p2xenbr0.east)+(0,0.5)$); \draw [thick] (p2v4eth0.west) -- +(-3,0) node[midway,below] {vif4.0} -- (p2xenbr0.east); \draw [thick] (p2v5eth0.west) -- +(-3,0) node[midway,below] {vif5.0} -- ($(p2xenbr0.east)+(0,-0.5)$); \draw [thick] (p2v6eth0.west) -- +(-3,0) node[midway,below] {vif6.0} -- ($(p2xenbr0.east)+(0,-1)$); \draw [thick] (p2v7eth0.west) -- +(-3,0) node[midway,below] {vif7.0} -- ($(p2xenbr0.east)+(0,-1.5)$); \draw [thick] ($(p2xenbr0.west)+(0,1.98)$) -- (p2peth0.east); \draw [thick] (p2peth0.west) -- (backswc.east); \draw [thick] (backswc.north) -- (backnet.south); \draw [thick] (p1v0eth1.east) -- +(3,0) node[midway,below] {vif0.1} -- (p1xenbr1.west)+(0,0.5); \draw [thick] (p1v1eth1.east) -- +(3,0) node[midway,below] {vif1.2} -- ($(p1xenbr2.west)+(0,-0.5)$); \draw [thick] (p1xenbr1.east) -- (p1peth1.west); \draw [thick] (p1peth1.east) -- (p2peth1.west) node [midway,below] {DRBD Link}; \draw [thick] (p2xenbr1.west) -- (p2peth1.east); \draw [thick] (p2xenbr1.west) -- (p2peth1.east); \draw [thick] (p2v0eth1.west) -- +(-3,0) node[midway,below] {vif0.1} -- (p2xenbr1.east); \draw [thick] (p2v1eth1.west) -- +(-3,0) node[midway,below] {vif1.2} -- ($(p2xenbr2.east)+(0,-0.5)$); \draw [thick] (p1v0eth2.east) -- +(3,0) node[midway,below] {vif0.2} -- ($(p1xenbr2.west)+(0,0.5)$); \draw [thick] (p1xenbr2.east) -- (p1peth2.west); \draw [thick] (p1peth2.east) -- (iswitch.west); \draw [thick] (p2v0eth2.west) -- +(-3,0) node[midway,below] {vif0.2} -- ($(p2xenbr2.east)+(0,0.5)$); \draw [thick] (p2xenbr2.west) -- (p2peth2.east); \draw [thick] (p2peth2.west) -- (iswitch.east); \draw [thick] (iswitch.south) -- (internet.north); \end{tikzpicture} \end{document}