It actually works fine for a spanning tree bridge with no CRB or IRB...
lo0 172.17.3.1
|
R1
| s0 172.17.1.1
| s0 172.17.1.2
R2
| s1 172.17.1.3
| s0 172.17.1.4
R3
|
lo0 172.17.2.1
***R2 config***
!
interface Serial0
bandwidth 1544
ip address 172.17.1.2 255.255.255.0
no ip mroute-cache
no fair-queue
clockrate 56000
bridge-group 1
!
interface Serial1
ip address 172.17.1.3 255.255.255.0
clockrate 56000
bridge-group 1
!
router rip
network 172.17.0.0
!
bridge 1 protocol ieee
!
R2#sh span
Bridge group 1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 0000.0c90.b7b8
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 4 last change occurred 00:40:00 ago
from Serial1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 1, topology change 0, notification 0, aging 300
Port 3 (Serial0) of Bridge group 1 is forwarding
Port path cost 647, Port priority 128, Port Identifier 128.3.
Designated root has priority 32768, address 0000.0c90.b7b8
Designated bridge has priority 32768, address 0000.0c90.b7b8
Designated port id is 128.3, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 2
BPDU: sent 2256, received 0
Port 4 (Serial1) of Bridge group 1 is forwarding
Port path cost 647, Port priority 128, Port Identifier 128.4.
Designated root has priority 32768, address 0000.0c90.b7b8
Designated bridge has priority 32768, address 0000.0c90.b7b8
Designated port id is 128.4, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 1214, received 0
R2#
***R1 config***
interface Loopback0
ip address 172.17.3.1 255.255.255.0
no logging event subif-link-status
!
interface Serial0
ip address 172.17.1.1 255.255.255.0
no logging event subif-link-status
!
router rip
network 172.17.0.0
***R3 config***
interface Loopback0
ip address 172.17.2.1 255.255.255.0
!
interface Serial0
ip address 172.17.1.4 255.255.255.0
!
router rip
network 172.17.0.0
!
R1#p 172.17.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.17.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 64/66/68 ms
R3#p
Protocol [ip]:
Target IP address: 172.17.3.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: lo 0
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.17.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/68/68 ms
R3#
----- Original Message -----
From: "Lupi, Guy"
To:
Sent: Sunday, September 16, 2001 7:47 PM
Subject: RE: Bridging [7:20078]
> What I was going to do was set up 192.168.1.1 255.255.255.252 on the
serial
> interface of the 2501 and 192.168.1.2 255.255.255.252 on the serial
> interface of the 2503, and just see if I could ping and get OSPF to work.
> It isn't working, I have CRB enabled, set up bridge group 1, put both
> interfaces on the 2511 into that bridge group, and told the router to
bridge
> IP for that bridge group using "bridge 1 bridge ip", which doesn't show up
> in the config for some reason. Here is a partial running config from the
> 2511, and a "show bridge group":
>
>
> bridge crb
> !
> !
> !
> interface Loopback1
> ip address 192.168.247.1 255.255.255.255
> no ip mroute-cache
> !
> interface Loopback2
> ip address 25.11.0.1 255.255.255.255
> no ip mroute-cache
> !
> interface Ethernet0
> ip address 198.207.193.112 255.255.255.0
> no ip mroute-cache
> !
> interface Serial0
> no ip address
> ip directed-broadcast
> no ip mroute-cache
> clockrate 1300000
> bridge-group 1
> !
> interface Serial1
> no ip address
> ip directed-broadcast
> no ip mroute-cache
> bridge-group 1
> !
> ip kerberos source-interface any
> ip classless
> ip route 0.0.0.0 0.0.0.0 198.207.193.254
> no ip http server
> !
> !
> !
> !
> !
> bridge 1 protocol ieee
> __________________________________________________________________________
>
> 2511#sh bridge group
>
> Concurrent routing and bridging is enabled.
>
> Bridge Group 1 is running the IEEE compatible Spanning Tree protocol
>
> Port 3 (Serial0) of bridge group 1 is forwarding
> Port 4 (Serial1) of bridge group 1 is forwarding
>
> -----Original Message-----
> From: Chuck Larrieu
> To: [EMAIL PROTECTED]
> Sent: 9/15/2001 9:09 PM
> Subject: RE: Bridging [7:20078]
>
> yes.
>
> how are you going to test that it's working?
>
> Chuck
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Lupi, Guy
> Sent: Saturday, September 15, 2001 5:49 PM
> To: [EMAIL PROTECTED]
> Subject: Bridging [7:20078]
>
>
> Can you configure bridging using only serial interfaces, no ethernet
> involved at all? I have a 2501 connected to a 2511, and a 2503
> connected to
> the same 2511, both via serial. I want to configure the 2 serial
> interfaces
> on the 2511 to bridge between them, is that possible? There is no
> practical
> reason for this, just setting it up in the lab and I am curious.
> Thanks.
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