05-28-2002 01:55 PM - edited 03-01-2019 09:55 PM
Hi,
I've got this scenario:
[R1]---ethernet---[Switch/ATM]----ATM------[Cisco7206vxr]
The Switch is a Nortel 8610, and it's bridging the ethernet port with the PVC within the ATM link to the 7206vxr.
I've configured the ethernet of R1 with IP 10.10.20.2, and
the Cisco7206VXR ATM interface with the 10.10.20.1 address.
Well, at first, the routers didn't see the other end. So, I've tried configuring "bridge irb" on the 7206VXR, and did this:
interface ATM1/0.1202 point-to-point
description Test PVC
no ip directed-broadcast
no atm enable-ilmi-trap
pvc 1/202
!
bridge-group 1
interface BVI1
ip address 10.10.20.1 255.255.255.252
no ip directed-broadcast
bridge 1 protocol ieee
bridge 1 route ip
Ok, after this, R1 sees the MAC address of the C7206vxr, but I still can't ping the other side. If I do a "debug arp" in both routers, I see (while I run a "ping 10.10.20.2 from the 7206vxr):
On the 7206vxr side:
d18h: IP ARP: creating incomplete entry for IP address: 10.10.20.2
4d18h: IP ARP: sent req src 10.10.20.1 0000.0c2e.e458,
dst 10.10.20.2 0000.0000.0000 BVI1
4d18h: IP ARP throttled out the ARP Request for 10.10.20.2
4d18h: IP ARP rep filtered src 10.10.20.2 0002.4b5b.1528, dst 10.10.20.1 0000.0c2e.e458 wrong cable, interface ATM1/0.1202
On the R1 side:
06:26:36: IP ARP: rcvd req src 10.10.20.1 0000.0c8b.1db0, dst 10.10.20.2 Ethernet0
06:26:36: IP ARP: sent rep src 10.10.20.2 0002.4b5b.1528,
dst 10.10.20.1 0000.0c8b.1db0 Ethernet0
06:26:38: IP ARP: rcvd req src 10.10.20.1 0000.0c8b.1db0, dst 10.10.20.2 Ethernet0
06:26:38: IP ARP: sent rep src 10.10.20.2 0002.4b5b.1528,
dst 10.10.20.1 0000.0c8b.1db0 Ethernet0
06:26:40: IP ARP: rcvd req src 10.10.20.1 0000.0c8b.1db0, dst 10.10.20.2 Ethernet0
06:26:40: IP ARP: sent rep src 10.10.20.2 0002.4b5b.1528,
dst 10.10.20.1 0000.0c8b.1db0 Ethernet0
In R1:
R1>sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.10.20.1 4 0000.0c8b.1db0 ARPA Ethernet0
Internet 10.10.20.2 - 0002.4b5b.1528 ARPA Ethernet0
R1>
In C7206VXR:
C7206VXR#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.10.20.1 - 0000.0c8b.1db0 ARPA BVI1
Internet 10.10.20.2 0 Incomplete ARPA
So, what I'm doing wrong???
why the C7206vxr insists to put the packet on the ATM interface, and not on the BVI 1 interface???
Regards,
Francisco Rivas C.
06-04-2002 01:37 PM
Perhaps the actual bridge irb command missed this copy and paste, but it is not here. Also, be aware that spanning tree comes into play under setups such as these, both on the ATM link and from the IEEE protocol being utilized under the bridge group. Make sure you have nothing blocking which shouldnt be.
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