Routing

IOS Cisco has a feature called "BGP Fast Session Deactivation" which speeds up a lot the teardown (even setup) of an iBGP session between remote routers. The idea behind it is quite simple: teardown the session as soon as the "neighbor ID" (usually a loopback interface) is no more reachable from routing table.

Do you know of any similar feature in JUNOS ?

Thanks a lot.

Have your tried BGP BFD?

Hi Dumitru,

thanks a lot for your answer.

To be sincere, never tried. I have never used BFD, so let me ask you some questions.

1) Does BFD work also between remote routers ? In other words, can I detect loss of loopback interface of remote (a few hop away) endpoint of the iBGP session, using BFD  ?

2) Does this loss detection interacts with BGP to quickly teardown the iBGP session ?

Thanks a lot.

Tiziano Tofoni

Hello,

"1) Does BFD work also between remote routers ? In other words, can I detect loss of loopback interface of remote (a few hop away) endpoint of the iBGP session, using BFD  ?"

Yes.

2) Does this loss detection interacts with BGP to quickly teardown the iBGP session ?

Yes

Read carefully the following link:

http://www.juniper.net/techpubs/en_US/junos10.1/topics/usage-guidelines/routing-configuring-bfd-for-bgp.html

Thanks a lot Dumitru. As a matter of fact I followed immediately you suggestion and made some lab test. Everything seems to work great.

Thanks a lot again.