[Aoetools-discuss] AoE does not work through a bridge

[Tracy R R. <tr...@ul...>]

Having exhausted all other possibilities I can test I have to ask:

Has anyone else ever done AoE through a bridge?

Because it does not seem to work. I have a feeling the AoE driver is 
making assumptions about what kind of interfaces it will transmit and 
listen on for AoE traffic.

I described my setup in an email yesterday.

And according to: http://wiki.xensource.com/xenwiki/XenNetworking
I should be able to create a bridge (I'll call it aoebr) and I should be 
able to put eth1 (the interface plugged into the AoE SAN) and vif0.0 on 
the bridge and talk to the bridge from veth1 which is the opposite end 
of the vif0.0 "wire". I do not specify anything in 
/dev/etherd/interfaces which means AoE should broadcast and listen on 
all interfaces.

When I do this and run tcpdump on the disk node (AoE target) I can see 
the packets from the AoE initiator (Xen box with bridge) and it sends a 
reply back. But the Xen box with the bridge never seems to see the reply 
packet because it never recognizes the AoE disk.

If I put eth1 specifically in /dev/etherd/interfaces I get the same 
behavior.

Since I am supposed to be talking to the bridge via veth1 anyway I have 
tried putting veth1 into /dev/etherd/interfaces but nothing arrives at 
the disk node when I do this. In fact nothing seems to elicit any 
network traffic at all except talking on eth1 and then only one-way 
conversation. This makes me think that AoE does not work properly on 
interfaces which are not actual physical ethernet cards.

I have made AoE work very successfully without bridging under a Xen 
enabled kernel. So I don't think it is Xen itself. It seems that AoE 
just does not like bridging. This is a big problem for me because my 
whole project hinges on getting AoE to work over the bridge.

Can anyone confirm whether AoE can communicate over veth interfaces via 
a bridge? ie. you have actually done it?

-- 
Tracy R Reed                  http://ultraviolet.org
A: Because we read from top to bottom, left to right
Q: Why should I start my reply below the quoted text