02-16-2007 02:42 AM - edited 03-05-2019 02:23 PM
hi guys, i have a very basic scenario of BGP load balancing
router A serial 0 to router B Serial 0
router A serial 1 to router B serial 1
Now i have configured loopback interfaces on both routers to be used for update-source command, i m not going into their detail, wat i want to ask is that in this case BGP updates will be send via both links ( load balancing) is there a possible way that i may force BGP to use serial 0 as a primary link and use s 1 only if s 0 fails ???
i know abt the backup interface command so is there any other way to do it ???? plz tell
thanks in advance
02-16-2007 03:38 AM
Hi, shaila
Yes, there is a way you can do this.
On router A, create two static routes as follows
ip route loopback-address-of-B mask serial0
ip route loopback-address-of-B mask serial1 210
On router B, you do the same thing
ip route loopback-address-of-A mask serial0
ip route loopback-address-of-A mask serial1 210
The route to the neighbor's loopback address will go onto serial0(and hence, the BGP updates will go onto serial0 only) . Once the serial0 goes down, it will turn to serial1.
HTH
SSLIN
02-16-2007 10:38 AM
Thank u very much, something was clicking in my head tht i know lol, but again thank u very much
02-16-2007 11:42 AM
Hi Shaila,
See we can do also by that way.... if you are pointing loopback to nexp hop router... it will get AD - 1
and pointing to local interface it will get AD-0. Okie
So, point to Serial-1 with nexp hop ip address. and serial-0 as it is.
Regards,
Dharmesh
02-16-2007 11:52 AM
thanks for ur feedback, at first i really got confused how to do it, thanks to u guys thanks alot
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