RE: Fallback Bridging

From: Daniel Kutchin (daniel@kutchin.com)
Date: Tue Feb 10 2009 - 06:53:27 ARST


Hi -

Try this.

SW4 is C3550 and doesn't speak IPv6.
But you want it to transport IPv6 traffic b/w R1, R2

       f0/1 (vl201) f0/2 (no switchport)
       -------------------------------------------
           o o SW4
       --- | ---------------------------- | ------
           | |
          R1-f0/0 R2-f0/0
          2001::1/64 2001:2/64

R1:
ipv6 unicast-routing
!
interface FastEthernet0/0
ipv6 address 2001::1/64

R2:
ipv6 unicast-routing
!
interface FastEthernet0/0
ipv6 address 2001::2/64

SW4:
interface FastEthernet0/1
switchport access vlan 201
!
interface FastEthernet0/2
no switchport
bridge-group 1
!
interface Vlan201
ip address 10.1.201.10 255.255.255.0
bridge-group 1
!
bridge 1 protocol vlan-bridge

R1(config-if)#do pin 2001::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

-
Daniel

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Salahaddin Elshekeil
Sent: Dienstag, 10. Februar 2009 06:49
To: Cisco certification
Subject: Fallback Bridging

Dear Experts,

Can any one please explain the fallback bridging in a simple way?

When I can use it in the real environment?

Salah

Blogs and organic groups at http://www.ccie.net



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