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xen-users
Re: [Xen-users] Howto mix public and private ip-addresses?
Hi,
for easier use i packed our own xen deb's with an additional
script in /etc/xen/scripts to setup more than one bridge:
the entry in xend-config.sxp has to be changed from 'network-bridge'
to the name of the wrapper script (needs to be chmod +x)
---snip---
#!/bin/sh
#
# this is an example to start more than one bridge on different vif's
#
#
XENDIR="/etc/xen/scripts"
#
# start first bridge (xenbr0) on eth0
#
$XENDIR/network-bridge "$@" netdev=eth0 bridge=xenbr0 vifnum=0
#
# start another bridge (xenbr1) on eth1
#
#$XENDIR/network-bridge "$@" netdev=eth1 bridge=xenbr1 vifnum=1
#
# start a third bridge (xenbr2) as machine internal net segment
#
#DUMMY="dummy0"
#/sbin/modprobe dummy 2>/dev/null >/dev/null && \
# /sbin/ifconfig $DUMMY up 2>/dev/null >/dev/null && \
# $XENDIR/network-bridge "$@" netdev=$DUMMY bridge=xenbr2 vifnum=2
---snip---
uncommenting the third bridge entry, a domU config line like
vif = [ 'mac=gi:ve:so:me:mac,bridge=xenbr0',
'mac=gi:ve:an:ot:her:mac,bridge=xenbr2 ]
should give you two domU interfaces, the second one bound to a bridge on dom0's
dummy0
interface.
this could be used to connect the domU's together. even dom0 could use this
bridge
via dummy0.
one thing to note: during tests with heavy net i/o over a dummy0 bridge i found
dom0
freezing, but this could have been a dom0's kernel issue.
greetings
Stephan
Joerg Schoppet schrieb:
> Hi,
>
> actually I have the following setup:
>
> Ubuntu Gutsy with Xen 3.1
>
> I have one public ip-address AND a /29 subnet with public ip-addresses.
>
> Xen is configured as routed-setup:
>
> dom0: has the public ip-address and the first ip-address from the subnet.
> each domU has an ip-address from the subnet and as gateway the first
> ip-address from the subnet.
>
> Everything works!
>
>
> Now I want to put a private address 192.168.1.x to each domU and to
> dom0, so that I can bind some network-services to these ip-addresses,
> which should only be addressable within the virtual systems.
>
> How can I do this?
>
> I've tried the following:
> - Added a dummy-interface to dom0 with 192.168.1.10.
> - Added e.g. 192.168.1.11 to the vif-config in the domain-config-file of
> a domU.
> - Added a dummy-interface to a domU with e.g. 192.168.1.11. I tried the
> config with no gateway, with the same gateway as the "normal" interface
> (public ip) and with the gateway 192.168.1.10
>
> No luck so far.
>
> Any tips, tricks, hints?
>
>
> Regards
>
> Joerg Schoppet
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
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