On Wed, 4 Feb 1998, Tatsuya Kawasaki wrote:
> Dear Cisco users and ISP,
>
> I am wondering if any of you, as always, give me any suggestion
> about how to create equal network load if there is
> two cisco's which are connected with two leased lines.
>
> Cisco A s0 <------> Cisco B so
> Cisoc A s1 <------> Cisco B s1
>
> and say, on the LAN port of Cisco A has NAS(s).
>
> My task is to distrubute even traffic over two leased lines.
>
> I know static will not do it. I don' think OSPF won't either.
Actually, we have been able to do this with static routing for some of our
frame relay clients where (because of mileage charges) it's been cheaper
for them to do multiple 56K links instead of a T1.
Here is an example of two load balanced 56K links which happen to go out
from us on one frame-relay T1 using sub-interfaces (some addresses hidden
for customer's privacy):
interface Serial1.3 point-to-point
description customer 56K link 1
ip address nnn.nnn.115.1 255.255.255.252
no ip mroute-cache
no ip route-cache
bandwidth 56
frame-relay interface-dlci 20 IETF
!
interface Serial1.4 point-to-point
description customer 56K link 2
ip address nnn.nnn.115.5 255.255.255.252
no ip mroute-cache
no ip route-cache
bandwidth 56
frame-relay interface-dlci 26 IETF
We use /30's for the point to point interfaces.
To get the load balancing, you put static routes in using the interface
name instead of the destination IP address to route to our customer's /24
(nnn.nnn.156.0):
ip route nnn.nnn.156.0 255.255.255.0 Serial1.4
ip route nnn.nnn.156.0 255.255.255.0 Serial1.3
http://tb.ior.com/mrtg/shared.html is a simple web page I just created
that shows the traffic for each of the sub-interfaces above so you can see
that the load is truly shared.
> I don't think iBGP does it?
>
> any suggestions....
>
>
> thnx in adv.
>
> tatsuya
David.Schmidt@ior.com Internet Ventures, Inc. (509)622-2878 x238
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