Hi guys, Greetings for the new year
The problem faced by me is simple, I cannot get channel bonding to work
perfectly with Xen.
I am trying to boost the bandwidth of guest domains by using link aggregation
(a.k.a channel bonding). I have tried round robin (mode 0) and high availability
(mode 1). I know that mode 1 will not give me bandwidth boost. But strangely
once i try mode 1 for the guest, I get bandwidth almost equal to one network
interface, but with roundrobin, the bandwidth is cut in half (or is not worst
compared to active backup). The same configuration yields bandwidth boost for
dom0 though. The active backup
One lame question is has anyone ever tried to improve the bandwidth of
domU''s using channel bonding and actually achieved that? I am using
ubuntu 8.04 and Xen version is 3.3.0 compiled from source. I have tried that
same with Xen 3.1.x without any luck. I am quite desperate to achieve that now.
I posted my configuration some days back on the users list, but there was not
much of help, therefore this time I am posting it on both the lists. I would
really appreciate any help from you guys.
Some of the configuration is as follows
Routing table for this configuration at dom0 (without Xenbr added) is
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.4.0 * 255.255.255.0 U 0 0 0 bond0
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
default xxxx 0.0.0.0 UG 100 0 0 eth0
#brctl show
bridge name bridge id STP enabled interfaces
eth0 8000.00d06809191a no peth0
With Xen bridge called brbond (using bond0)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.4.0 * 255.255.255.0 U 0 0 0 brbond
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
default xxxx 0.0.0.0 UG 100 0 0 eth0
#brctl show
bridge name bridge id STP enabled interfaces
brbond 8000.00d06809191b no bond0
eth0 8000.00d06809191a no peth0
The routing table for domU is.
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.4.0 * 255.255.255.0 U 0 0 0 eth1
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
default xxxx 0.0.0.0 UG 0 0 0 eth0
After domU creation, brctl show on dom0 looks fine.
#brctl show
bridge name bridge id STP enabled interfaces
brbond 8000.00d06809191b no bond0
vif3.1
eth0 8000.00d06809191a no peth0
vif3.0
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