Networking in Xen 3.x - Revision history

Digimer: /* vifX.Y */

2011-05-03T23:43:21Z

vifX.Y

← Older revision		Revision as of 23:43, 3 May 2011
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	{{note\|1=In this section, <span class="code">X</span> matches the <span class="code">domU</span> ID number, <span class="code">Y</span> matches a given <span class="code">ethY</span> device on <span class="code">dom0</span> and <span class="code">Z</span> matches a given <span class="code">ethX</span> device inside a <span class="code">domU</span>. I know this is a little odd, but you need to get this clear in order to see how things connect here.}}		{{note\|1=In this section, <span class="code">X</span> matches the <span class="code">domU</span> ID number, <span class="code">Y</span> matches a given <span class="code">ethY</span> device on <span class="code">dom0</span> and <span class="code">Z</span> matches a given <span class="code">ethX</span> device inside a <span class="code">domU</span>. I know this is a little odd, but you need to get this clear in order to see how things connect here.}}

	{{note\|1=Under the ~~old~~-type configuration, a <span class="code">vif0.Y</span> is not needed as the <span class="code">eth</span> devices are directly connected to the bridge.}}		{{note\|1=Under the new-type configuration, a <span class="code">vif0.Y</span> is not needed as the <span class="code">eth</span> devices are directly connected to the bridge.}}

	These are Xen's virtual interfaces used to connect an <span class="code">ethX</span> device on <span class="code">dom0</span> to a <span class="code">pethZ</span> device on a <span class="code">domU</span>. Please be aware that there need not be any correlation between <span class="code">eth0</span> on <span class="code">dom0</span> and <span class="code">eth0</span> on <span class="code">domU</span>! This is why '<span class="code">X</span>' and '<span class="code">Z</span>' are used separately here.		These are Xen's virtual interfaces used to connect an <span class="code">ethX</span> device on <span class="code">dom0</span> to a <span class="code">pethZ</span> device on a <span class="code">domU</span>. Please be aware that there need not be any correlation between <span class="code">eth0</span> on <span class="code">dom0</span> and <span class="code">eth0</span> on <span class="code">domU</span>! This is why '<span class="code">X</span>' and '<span class="code">Z</span>' are used separately here.

Digimer at 23:42, 3 May 2011

2011-05-03T23:42:34Z

← Older revision		Revision as of 23:42, 3 May 2011
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	~~{{warning\|1=This is currently being heavily edited to account for the new, system-configured bridges. Until this is removed, consider this document to be flawed.}}~~

	In Xen3, there are two possible ways that networking is handled. That is, bridging connections between domU's and the real world. The tutorials on AN!Wiki use the method adopted in newer Xen versions and which is recommended by Xen. That is, bridges are built in the system, outside the scope of Xen.		In Xen3, there are two possible ways that networking is handled. That is, bridging connections between domU's and the real world. The tutorials on AN!Wiki use the method adopted in newer Xen versions and which is recommended by Xen. That is, bridges are built in the system, outside the scope of Xen.

Digimer at 23:40, 3 May 2011

2011-05-03T23:40:21Z

Show changes

Digimer at 04:02, 3 May 2011

2011-05-03T04:02:22Z

← Older revision		Revision as of 04:02, 3 May 2011
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			{{warning\|1=This is currently being heavily edited to account for the new, system-configured bridges. Until this is removed, consider this document to be flawed.}}

			In Xen3, there are two possible ways that networking is handled. That is, bridging connections between domU's and the real world. The tutorials on AN!Wiki use the method adopted in newer Xen versions and which is recommended by Xen. That is, bridges are built in the system, outside the scope of Xen.

			However, the old method, and still the default method on [[EL5]], has Xen create and manage the bridge. In this scenario, the real interface is moved off to the side and the dom0 interface becomes a virtual interface which connects to the bridge in the same manner as the domU VMs.

	This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].		This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].

	= Definitions =		= Definitions =

			Some of the terms below will only exist in the tradition Xen 3 networking, and some will be used in both new and old type networks but have different meanings. Where there is uniqueness, the following prefixes will be used:
			* '''Old Type''': Refers to the Xen default configuration, where Xen creates and manages the bridges.
			* '''New Type''': Refers to the new, recommended method of managing the bridges outside of Xen.

	== dom0 ==		== dom0 ==
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	== ethX ==		== ethX ==

			=== ethX; New Type ===



			=== ethX; Old Type ===

	Normally, this is the name of a "main" ethernet device. However, under Xen, this does '''''NOT''''' reflect the real hardware once the <span class="code">xend</span> daemon has started!		Normally, this is the name of a "main" ethernet device. However, under Xen, this does '''''NOT''''' reflect the real hardware once the <span class="code">xend</span> daemon has started!

Digimer at 19:15, 2 May 2011

2011-05-02T19:15:07Z

← Older revision		Revision as of 19:15, 2 May 2011
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	~~'''This is now outdated''''. This was written for, and applies to the Xen 3.x series.~~

	This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].		This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].

Digimer: moved Networking in Xen to Networking in Xen 3.x: Splitting out docs for Xen major versions

2010-09-18T23:03:27Z

moved Networking in Xen to Networking in Xen 3.x: Splitting out docs for Xen major versions

← Older revision		Revision as of 23:03, 18 September 2010
(No difference)

Digimer at 22:55, 18 September 2010

2010-09-18T22:55:46Z

← Older revision		Revision as of 22:55, 18 September 2010
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	{{howto_header}}		{{howto_header}}

			'''This is now outdated''''. This was written for, and applies to the Xen 3.x series.

	This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].		This section is based on [http://wiki.xensource.com/xenwiki/XenNetworking this] link. There are a lot of other good topics on Xen networking and general Xen topics [http://wiki.xensource.com/xenwiki/HowTos here].

Digimer: /* Network Map - Putting it all together */

2010-09-12T04:32:22Z

Network Map - Putting it all together

← Older revision		Revision as of 04:32, 12 September 2010
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	<source lang="text">		<source lang="text">
	~~_________________________________________________________________~~		__________________________________________________________
	\| dom0 _______________ \|		\| dom0 _______________ \|
	\|_______ ~~______~~ ________ \|______ dom1 \| \|		\|_______ ________ \|______ dom1 \| \|
	= peth0 \|= ~~eth0 \|~~-\| xenbr0 \|-----------[vif1.0]-= eth0 \| \| \|		= peth0 \|=-\| xenbr0 \|-----------[vif1.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \|---------\ \|-_____\| \| \|		\|-______\| \| \|---------\ \|-_____\| \| \|
	\| \| \|-------\ \| \| \| \|		\| ______ \| \|-------\ \| \| \| \|
	\| \| \|-----\ \| \| \|______ \| \|		\| \| eth0 =-\| \|-----\ \| \| \|______ \| \|
	\| \| \| /-+-+-+-[viv1.2]-= eth1 \| \| \|		\| \|______\| \| \| /-+-+-+-[viv1.2]-= eth1 \| \| \|
	\| \| \| \| \| \| \| \|-_____\| \| \|		\| \| \| \| \| \| \| \|-_____\| \| \|
	\| \|________\| \| \| \| \| \|_______________\| \|		\| \|________\| \| \| \| \| \|_______________\| \|
	\| \| \| \| \| \|		\| \| \| \| \| \|
	\| \| \| \| \| _______________ \|		\| \| \| \| \| _______________ \|
	\|_______ ~~______~~ ________ \| \| \| \| \|______ dom2 \| \|		\|_______ ________ \| \| \| \| \|______ dom2 \| \|
	= peth1 \|= ~~eth1 \|~~-\| xenbr1 \| \| \| \| \-[viv2.0]-= eth0 \| \| \|		= peth1 \|=-\| xenbr1 \| \| \| \| \-[viv2.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \| \| \| \| \|-_____\| \| \|		\|-______\| \| \| \| \| \| \|-_____\| \| \|
	\| \| \| \| \| \| \| \| \|		\| ______ \| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \| eth1 =-\| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \|______\| \| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \| \| \| \| \| \| \| \|
	\| \|________\| \| \| \| \|_______________\| \|		\| \|________\| \| \| \| \|_______________\| \|
	\| \| \| \| _______________ \|		\| \| \| \| _______________ \|
	\|_______ ~~______~~ ________ \| \| \| \|______ dom4 \| \|		\|_______ ________ \| \| \| \|______ dom4 \| \|
	= peth2 \|= ~~eth2 \|~~-\| xenbr2 \|---/ \| \---[viv4.0]-= eth0 \| \| \|		= peth2 \|=-\| xenbr2 \|---/ \| \---[viv4.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \|---\ \| \|-_____\| \| \|		\|-______\| \| \|---\ \| \|-_____\| \| \|
	\| \| \| \| \| \| \| \|		\| ______ \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \| eth2 =-\| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \|______\| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \| \| \| \| \| \| \|
	\| \|________\| \| \| \|_______________\| \|		\| \|________\| \| \| \|_______________\| \|
	\| \| \| _______________ \|		\| \| \| _______________ \|
	\| \| \| \|______ dom6 \| \|		\| \| \| \|______ dom6 \| \|
	\| \| \-----[viv6.0]-= eth0 \| \| \|		\| \| \-----[viv6.0]-= eth0 \| \| \|
	\| \| \|-_____\| \| \|		\| \| \|-_____\| \| \|
	\| \| \| \| \|		\| \| \| \| \|
	\| \| \|______ \| \|		\| \| \|______ \| \|
	\| \-------[viv6.2]-= eth1 \| \| \|		\| \-------[viv6.2]-= eth1 \| \| \|
	\| \|-_____\| \| \|		\| \|-_____\| \| \|
	\| \| \| \|		\| \| \| \|
	\| \|_______________\| \|		\| \|_______________\| \|
	\|~~_________________________________________________________________~~\|		\|__________________________________________________________\|
	</source>		</source>

Digimer: /* Network Map - Putting it all together */

2010-07-06T01:45:41Z

Network Map - Putting it all together

← Older revision		Revision as of 01:45, 6 July 2010
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	\|_________________________________________________________________\|		\|_________________________________________________________________\|
	</source>		</source>

			=== Real World Example ===

	[[Sample Xen 2-node Cluster Network Map\|This]] is one an example of networking inside a two node cluster.		[[Sample Xen 2-node Cluster Network Map\|This]] is one an example of networking inside a two node cluster.

			[[File:SampleXen2NodeClusterMap.png\|1238px\|Map of a Sample 2-node Cluster]]

	{{footer}}		{{footer}}

Digimer at 20:47, 10 May 2010

2010-05-10T20:47:21Z

Show changes

← Older revision		Revision as of 04:32, 12 September 2010
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	<source lang="text">		<source lang="text">
	~~_________________________________________________________________~~		__________________________________________________________
	\| dom0 _______________ \|		\| dom0 _______________ \|
	\|_______ ~~______~~ ________ \|______ dom1 \| \|		\|_______ ________ \|______ dom1 \| \|
	= peth0 \|= ~~eth0 \|~~-\| xenbr0 \|-----------[vif1.0]-= eth0 \| \| \|		= peth0 \|=-\| xenbr0 \|-----------[vif1.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \|---------\ \|-_____\| \| \|		\|-______\| \| \|---------\ \|-_____\| \| \|
	\| \| \|-------\ \| \| \| \|		\| ______ \| \|-------\ \| \| \| \|
	\| \| \|-----\ \| \| \|______ \| \|		\| \| eth0 =-\| \|-----\ \| \| \|______ \| \|
	\| \| \| /-+-+-+-[viv1.2]-= eth1 \| \| \|		\| \|______\| \| \| /-+-+-+-[viv1.2]-= eth1 \| \| \|
	\| \| \| \| \| \| \| \|-_____\| \| \|		\| \| \| \| \| \| \| \|-_____\| \| \|
	\| \|________\| \| \| \| \| \|_______________\| \|		\| \|________\| \| \| \| \| \|_______________\| \|
	\| \| \| \| \| \|		\| \| \| \| \| \|
	\| \| \| \| \| _______________ \|		\| \| \| \| \| _______________ \|
	\|_______ ~~______~~ ________ \| \| \| \| \|______ dom2 \| \|		\|_______ ________ \| \| \| \| \|______ dom2 \| \|
	= peth1 \|= ~~eth1 \|~~-\| xenbr1 \| \| \| \| \-[viv2.0]-= eth0 \| \| \|		= peth1 \|=-\| xenbr1 \| \| \| \| \-[viv2.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \| \| \| \| \|-_____\| \| \|		\|-______\| \| \| \| \| \| \|-_____\| \| \|
	\| \| \| \| \| \| \| \| \|		\| ______ \| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \| eth1 =-\| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \|______\| \| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \| \|		\| \| \| \| \| \| \| \| \|
	\| \|________\| \| \| \| \|_______________\| \|		\| \|________\| \| \| \| \|_______________\| \|
	\| \| \| \| _______________ \|		\| \| \| \| _______________ \|
	\|_______ ~~______~~ ________ \| \| \| \|______ dom4 \| \|		\|_______ ________ \| \| \| \|______ dom4 \| \|
	= peth2 \|= ~~eth2 \|~~-\| xenbr2 \|---/ \| \---[viv4.0]-= eth0 \| \| \|		= peth2 \|=-\| xenbr2 \|---/ \| \---[viv4.0]-= eth0 \| \| \|
	\|-______\| ~~\|_____\|~~ \| \|---\ \| \|-_____\| \| \|		\|-______\| \| \|---\ \| \|-_____\| \| \|
	\| \| \| \| \| \| \| \|		\| ______ \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \| eth2 =-\| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \|______\| \| \| \| \| \| \| \|
	\| \| \| \| \| \| \| \|		\| \| \| \| \| \| \| \|
	\| \|________\| \| \| \|_______________\| \|		\| \|________\| \| \| \|_______________\| \|
	\| \| \| _______________ \|		\| \| \| _______________ \|
	\| \| \| \|______ dom6 \| \|		\| \| \| \|______ dom6 \| \|
	\| \| \-----[viv6.0]-= eth0 \| \| \|		\| \| \-----[viv6.0]-= eth0 \| \| \|
	\| \| \|-_____\| \| \|		\| \| \|-_____\| \| \|
	\| \| \| \| \|		\| \| \| \| \|
	\| \| \|______ \| \|		\| \| \|______ \| \|
	\| \-------[viv6.2]-= eth1 \| \| \|		\| \-------[viv6.2]-= eth1 \| \| \|
	\| \|-_____\| \| \|		\| \|-_____\| \| \|
	\| \| \| \|		\| \| \| \|
	\| \|_______________\| \|		\| \|_______________\| \|
	\|~~_________________________________________________________________~~\|		\|__________________________________________________________\|
	</source>		</source>