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New Member

Ping problem over a Multilink connection.

I'm sure this has to be a very simple problem, but I can't find any useful info to help.

--------

| | <- Gateway to internet

--------

|

|

| 10.10.X.X LAN-A

----------------------------------------------

|

|

---------

| | 2620-A

---------

| |

| |

| |

T1-1 | | T1-2

| |

| |

| |

---------

| | 2620-B

---------

|

|

10.10.X.X LAN-B |

----------------------------------------------

I have the two 2620 setup to use a multilink

interface to combine both T1s into a single

fat pipe. IP routing is off and I'm simply

bridging the two nets.

All the hosts on LAN-A can ping hosts on

LAN-B and vice verse. Everything seems to

work fine....

EXCEPT...

If I try to telnet to or ping the Fastethernet

interface on the remote segment I can't?

The symptoms are the same for hosts on LAN-A

trying to reach 2620-B or the hosts on LAN-B

trying to reach the hosts on LAN-A.

Also - from either routers CLI I can't ping

anything on the remote end.

Any help is greatly appreciated.

Router configs attached:

  • Other Network Infrastructure Subjects
2 REPLIES
New Member

Re: Ping problem over a Multilink connection.

Sorry - should have added the drawing as an attachment.

New Member

Re: Ping problem over a Multilink connection.

Well - finally got an answer from another resource:

(from DonJohnston)

If you have IP routing disabled, then there will be no processing of IP packets.

You can use Integrated Routing and Bridging (IRB) if you need to process IP packets and bridge at the same time.

Remove the ip address from the fastethernet interface and add these lines.

ip routing

bridge irb

interface bvi 1

ip address 10.10.10.254 255.255.0.0

This should give you an ip address you can talk to.

-Don

also needed to add globla command:

bridge bridge-group (1) route protocol (ip)

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