bridging mode

[seegomaa]

dears,

i have two 1751 routers between them leased line

(HDLC encapsulation) as a primary link and ISDN as a backup link . how to enable bridging mode ( not routing ).

[ahbanks]

The most basic configuration, which would need to be applied to both routers.

bridge 1 protocol ieee

!

interface ethernet 0/0

bridge-group 1

!

interface Serial 0/0

bridge-group 1

You could apply this to the dialer interface as well, but I would track the state of the serial to keep the ISDN from remaining up all of the time.

If you're really serious about not routing, you could issue a "no ip routing" command as well.

[Richard Burts]

Depending on what they want to bridge the "no ip routing" may not be optional. In particular if they want to bridge IP traffic they must either use "no ip routing" or they must configure Integrated Routing and Bridging (IRB) which allows IP to be bridged on some interfaces.

Without knowing more about what they are really trying to do it is difficult to know which approach would be best.

HTH

Rick

[seegomaa]

i want to ip to be bridged on :

serial 0/0 interface ( primary )

& bri interface (secondary )