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Re: [Xen-users] Need help setting up guest's networking

My physical eth1 is currently unused.
It may be a good idea for me to use that in association with xen bridge.
How do I make xen bridge to use eth1 instead of eth0?
Once I do that, I should be able to assign a local IP to it without loosing Internet connectivity for Dom0.
Then I will follow the rest of your plan.

Best regards,

On Apr 29, 2007, at 10:45 AM, Tim Post wrote:

On Sun, 2007-04-29 at 10:32 -0500, Yevgeniy Goldberg wrote:
Hi Tim,
The guest that has network issues is suppose to use dhcp and that is
the part that is not working.
When I run ifconfig -a on the xen host OS (Dom0) I get the following:

Your bridge (xenbr0) does not appear to have an IPV4 address.

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:627484 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:29099604 (27.7 Mb)  TX bytes:0 (0.0 b)

... nor does your non-enslaved secondary ethernet device (eth1).
Something is telling me you have something wrong with your DHCP

Can you paste anything related to dhcp from syslog on the dhcp server

Better yet, for purposes of eliminating Xen as part of this problem, can you assign a static address and subnet to eth0 (which appears to become
enslaved to xenbr0 via network-bridge), as well as specifying a static
IP and subnet from within the dom-u? From your ifconfig dump, it looks
like network-bridge is doing its job correctly.

Please note, if macs change, you may have to ping outward from within
dom-0 (and the dom-u) prior to either being able to see incoming
traffic. or are good hosts to ping for this purpose.


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