Recently, i got some hints on the forum to get my 2 ATM PVC's to bond together via bridging on a 7204VXR. This is working now and i can ping from left to right and ARP seems to work ok.
Now i attached 2950's on both sides and configured a VLAN trunk on the interfaces facing the DSL network. Unfortunately, there's something going wrong in replying to ARP.
When trying to send something from A to B, there's an ARP request going to B. B replies with it's MAC, but this reply is not received by A. I included a packet capture and a diagram so you guys can see what i'm talking about. 7200 config is pretty straightforward :
interface atm1/0.162055 point-to-point
interface atm1/0.162056 point-to-point
bridge 10 protocol ieee
Any help would be very appreciated.
The last time I checked you cannot bridge a vlan tagged frame.
Try configuring a flat VLAN on both switches and test again or make the vlan with the machines you are trying to ping to the native vlan on the trunk interfaces for testing.
If i sniff the VLAN trunk itself, it does add the VLAN-id in the trace, so it seems that the VLAN header does make it through.
Are you doing a lab or real application ?
The proper way to do that is to front-end the router with an ATM switch, like an LS1010 that is extremely cheap on the used market.
in one of the links I've posted in your other thread explains that this setup works for a vlan only.
to be able to carry multiple Vlans you would need a PVC and a bridge-group for each.
Hope to help