From: Jonathan V Hays (jhays@jtan.com)
Date: Fri Jun 27 2003 - 14:25:25 GMT-3
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of James.Jackson@broadwing.com
> Sent: Friday, June 27, 2003 1:35 AM
> To: zpnist@yahoo.com; ccielab@groupstudy.com
> Subject: RE: Transparent Bridge
>
>
> By default, IP will be routed unless you decapitate r4 (no ip
> routing).
> Instead, you'll want to run IRB, "bridge irb" on R4. With IRB enabled,
> everything will be bridged for this segment. If you want to
> also route to
> the segment, create a BVI on R4, "int bvi 1" where the "1"
> corresponds to
> your bridge group, apply an IP to bvi1 from 14.1.1.0/24, and
> then allow IP
> to also be routed, "bridge 1 route ip"
>
> HTH
> James
This is an excellent summary, James. Thanks for reminding us about IRB.
However, note that if you only want to get this simple scenario to work,
you do not need IRB. You only need to enter "no ip routing" on r4.
After you do this you will be able to successfully bridge (and ping from
r1 to r2). See below:
r1#p 14.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 14.1.1.2, timeout is 2 seconds:
....
term_srv#8
[Resuming connection 8 to r2514 ... ]
r4#conf t
Enter configuration commands, one per line. End with CNTL/Z.
r4(config)#no ip routing
r4(config)#^Z
r4#
term_srv#1
[Resuming connection 1 to r2501a ... ]
r1#p 14.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 14.1.1.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 4/5/8 ms
r1#
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