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load balancing using bgp multihop relax

Haris P
Level 4
Level 4

Dears ,

I'm using the command BGP multihop relax to lead balance between two of my ISP connections . The scenario is explained in the below link

http://blog.alwaysthenetwork.com/tutorials/bgp-multipath-relax/

the traffic seems to be not load balancing properly with this setup . Both routes are showing in the routing table .What could be the possible reasons >?

Regards

haris

3 Replies 3

Mahesh Gohil
Level 7
Level 7

Hello Haris,

Even with the command you used there is need of same AS length though both path is different.

Can you verify the length of number of AS's both path contain.

you can post more output from your router for better understanding

Regards

Mahesh

Dear Mahesh ,

The AS path length is same in both cases

-Router>sh ip bgp

Network Next Hop Metric LocPrf Weight Path

  • 10.1.1.0/24 192.168.111.93 0 76677 64546

64546 i

*> 172.31.247.101 0 64852 64852

64546 i

  • 10.1.10.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.20.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.24.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.35.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.37.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.39.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.40.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

  • 10.1.41.0/24 192.168.111.93 0 76677 64546

64546 ?

*> 172.31.247.101 0 64852 64852

64546 ?

HI,

Can you post output of "sh ip bgp " output

Regards

Mahesh