RE: IRB-Missing something??

From: Chuck Mason (romason0916@xxxxxxxxxxx)
Date: Sat Mar 09 2002 - 21:39:25 GMT-3


   
Don't forget:
bridge 1 route ip
cm

-----Original Message-----
From: nobody@groupstudy.com
[mailto:nobody@groupstudy.com]On Behalf Of
Michael C. Popovich
Sent: Sunday, March 10, 2002 6:00 AM
To: ccielab@groupstudy.com
Subject: IRB-Missing something??

I have a 2620 with a FastEthernet attached to Cat5K on
port 2/12.

Speed and duplex have been forced to 100/Full on both
sides. There is an
ISL trunk between them.

I have two sub-interfaces on the 2620 FA0/0.100 and
FA0/0.300 for VLANs
100 & 300 respectively. I created a bridge group on the
2620 and setup
IRB with a BVI interface. The IP addresses are
172.16.135.14/28 on the
BVI and for the 5K it is 172.16.135.2/28 in vlan 100.
My switch can't
ping the 2620 and the 2620 can't ping the switch. When
I debug ip packet
on the 2620 I get a encapsulation failed from the BVI
interface. I was
under the impression the BVI would be able to ping the
switch.

I have two other routers attached one on VLAN 100 and
the other on VLAN
300 but both on the 172.16.135.0/28 network. They can
ping each other
and the switch. I know the bridging is working I just
don't fully
understand why the BVI interface itself can't ping
anything on the same
network.

TIA

MP

Configs are posted below.

2620

interface FastEthernet0/0
 no ip address
 speed 100
 full-duplex
!
interface FastEthernet0/0.100
 encapsulation isl 100
 no ip redirects
 bridge-group 1
!
interface FastEthernet0/0.300
 encapsulation isl 300
 no ip redirects
 bridge-group 1
!
interface Serial0/0
 no ip address
 shutdown
 no fair-queue
!
interface BVI1
 ip address 172.16.135.14 255.255.255.240
!
ip classless
no ip http server
!
!
bridge 1 protocol ieee

Cat5K

set interface sc0 100 172.16.135.2 255.255.255.240
172.16.135.15
clear trunk 2/12 2-99,101-299,301-1005
set trunk 2/12 on isl 1,100,300



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