Hi All,
I am in the process of migrating from VMWare to Xen but am having some
serious issues with networking. My setup is as follows:
I am running Xen 3.2 on Ubuntu 8.04. The server, an HP DL380, has two
NICs (expanding to 6 once I get bridging working). I would like to run
guest domains that will connect to separate physical VLANs. As such, I
would like to create a bridge for each physical NIC to present, as
appropriate, to guest domains. To this point, I have had very little luck
with this.
I have read many tutorials about creating a custom network-bridge script
and pointing to it in xend-config.sxp but each time I do this, networking
on the entire box gets hosed and I need to get to the console, disable the
custom script, and reboot before networking on the host will work again.
I have also tried adding the second bridge manually by issuing:
/etc/xen/scripts/network-bridge start vifnum=1 netdev=eth1 bridge=xenbr1
This appears to create the bridge as evidenced by the output from
brctl show:
eth0 8000.001cc4ee4958 no peth0
xenbr1 8000.001cc4ee4956 no peth1
tap0
vif14.0
and /etc/xen/scripts/network-bridge status:
============================================================
12: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
link/ether 00:1c:c4:ee:49:58 brd ff:ff:ff:ff:ff:ff
inet 10.1.5.128/24 brd 10.1.5.255 scope global eth0
inet6 fe80::21c:c4ff:feee:4958/64 scope link
valid_lft forever preferred_lft forever
12: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
link/ether 00:1c:c4:ee:49:58 brd ff:ff:ff:ff:ff:ff
inet 10.1.5.128/24 brd 10.1.5.255 scope global eth0
inet6 fe80::21c:c4ff:feee:4958/64 scope link
valid_lft forever preferred_lft forever
bridge name bridge id STP enabled interfaces
eth0 8000.001cc4ee4958 no peth0
xenbr1 8000.001cc4ee4956 no peth1
tap0
vif14.0
10.1.5.0/24 dev eth0 proto kernel scope link src 10.1.5.128
default via 10.1.5.1 dev eth0 metric 100
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
10.1.5.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
0.0.0.0 10.1.5.1 0.0.0.0 UG 100 0 0
eth0
============================================================
OK, so this all looks promising. I change my guest domain config to use
xenbr1 but it just does not work. Has anyone had any luck with a
configuration like this? It seems pretty simple to me. Any advice or
pointers to documentation that might be helpful would be very much
appreciated. Also, if helpful, I am very willing to provide additional
information.
Thanks in advance for your time,
-brendan
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