Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

load balancing

how to I load balance using eigrp , what is the multiplier & varience commands and how do I use them ?

thanks

Carl

2 REPLIES
Silver

Re: load balancing

Hi,

Please see this document about IGRP & EIGRP unequal load balancing which describes the usage of variance command with the multiplier parameter:

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009437d.shtml

Best regards,

Antonin

Bronze

Re: load balancing

Every routing protocol support equal cost paths load balance but by default EIGRP can be able load balance between four unequal paths (those paths should be feasible successor routes) so you can be able to add them to routing table by variance command.

for instance if you have route with feasible distance (FD) 500 and two feasible successor routes with FD:1400 and FD:1600 then you should choose four for variance :

4*500 = 2000 (1400 < 2000 and 1600 < 2000)

but if there is another feasible successor with FD:2100, it doen't add to routing table with variance four, because 2100 > 2000

then router divides traffic between three paths :

FD:500 1600/500 = 3 packets

FD:1400 1600/1400 = 1 packets

FD:1600 1600/1600 = 1 packets

for more information :

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009437d.shtml

88
Views
0
Helpful
2
Replies
CreatePlease to create content