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xen-users
Re: [Xen-users] Network Bridge Fails After 3.1.3 -> 3.2.1 Upgrade
James Dingwall wrote:
The output from the Gentoo created bridge (brctl show, ip show link)
bridge name bridge id STP enabled interfaces
breth0 8000.00e0812be348 no eth0
15: breth0: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
link/ether 00:e0:81:2b:e3:48 brd ff:ff:ff:ff:ff:ff
In this scenario :
- your eth0 should be up, no ip address
- breth0 should be up, have an ip address (optional, if your dom0 needs it)
in your example it seems like breth0 is missing an ip address. Is this
intentional? What are the relevant entries in syslog when the bridge
stops working? What is the status of eth0 (up, ip address?)
--
Fajar
and the Xen created
bridge name bridge id STP enabled interfaces
xenbr0 8000.feffffffffff no vif0.0
peth0
15: xenbr0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue
link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
The differences that I see are in the bridge id and that the Xen bridge
as NOARP in the link. Would either of these differences explain the
behaviour I see?
Thanks,
James
I'm running a Gentoo system using the 2.6.21-xen sources available in
portage. The system has run reliably with 3.0 and 3.1 versions of Xen
but now trying to upgrade to 3.2 I am facing some problems. I am
letting Xen control the creation of the network bridge and this happens
without a problem and when I start domUs they initially work without a
problem. Unfortunately after a short time networking to the domU fails,
dom0 remains ok. I have a broadcom network interface which is built on
to the motherboard, ethtool -i reports:
driver: tg3
version: 3.75.2
firmware-version: 5703-v2.33
bus-info: 0000:02:09.0
I have seen reports of issues with broadcom interfaces not working and
that ethtool -K tx off rx off resolves them but this does not work in my
case. Any suggestions on things to look at are welcome, let me know if
any more information is required.
# ethtool -k peth0
Offload parameters for peth0:
Cannot get device udp large send offload settings: Operation not
supported
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: off
udp fragmentation offload: off
generic segmentation offload: off
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