HELP!!!
I am currently migrating from TR to ethernet. I would like to retain the IP subnet currently in use for both sides of the network.
Background
The new ethernet network consists of a couple of 3550-12G at the core acting as L3 switches, linked to a mixture of 2950-48 and 2950-24 switches. There are 2 VLANs 1 for managment the other for users (with the same subnet as TR) - 802.1Q trunking is enabled between the switches - this works ok
The legacy TR side consists of various segments linked using a couple of Madge Ringswitches
To link the two networks together I've used a 2612 router.
The IOS version on this unit is c2600-js-mz.122-5d.bin
Ip routing has been disabled on this unit with the following configured forbridging:
"no ip routing
!
bridge irb
!
source-bridge ring-group 769
source-bridge transparent 769 770 1 1
!
interface Ethernet0/0
ip address 172.16.24.20 255.255.240.0
no ip route-cache
no ip mroute-cache
full-duplex
bridge-group 1
!
interface TokenRing0/0
no ip address
no ip route-cache
no ip mroute-cache
ring-speed 16
multiring all
bridge-group 1
source-bridge 1027 1 769
source-bridge spanning
!
!
bridge 1 protocol ieee
bridge 1 bitswap-layer3-addresses
bridge 1 route ip"
On the ethernet side all of the cisco switches have learned the TR MAC addresses. If I check the RIF info on the 2612 I get the following:
"0000.3042.3264 N/A To0/0 2 - 06B0.4041.4030
0000.f6b8.1a7c N/A To0/0 2 - 06B0.2011.4030
0000.f6b8.1a7c N/A BG1 2 - 0A90.2011.4031.3011.3020
0000.f66f.04b4 N/A BG1 6 - 0A90.1031.4031.3011.3020
0000.f6b9.9afc N/A BG1 0 - 0A90.1031.4031.3011.3020"
If I attach a protocol analyser to the ethernet, I learn TR MAC addresses, I also see IP multicast and broadcast traffic from TR and also IPX broadcast traffic
The problem . . .
A device on ethernet in the correct VLAN with an IP address in the same subnet as the devices on TR is unable to ping the default gateway (cisco 2500) attached to TR or any other TR attached device fro that matter!
Hopefully someone can help me?
Regards
Keith
