[j-nsp] Re: M5 - outbound load balancing

Fouant, Stefan A stefan.fouant at mci.com
Wed Jan 19 15:40:33 EST 2005


Problem is here that BGP is making the decision as to which route to make
active (in the Local-RIB) and then sending that single route to the routing
table.  So from the routing table perspective you don't' have multiple
equal-cost paths to choose from, hence the load-balance per-packet policy
does not work.

You might want to try BGP multipath.  Can we see your configuration under
[protocols bgp]?

Stefan Fouant
Senior Network Engineer

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Korey Verlsteffen
Sent: Wednesday, January 19, 2005 3:17 PM
To: Erdem Sener; juniper-nsp at puck.nether.net
Subject: [j-nsp] Re: M5 - outbound load balancing

I tried the per-packet policy but it don't think I have it setup right.

A show route shows me two equal paths

net.0: 151671 destinations, 302507 routes (151522 active, 0 holddown, 321
+ = Active Route, - = Last Active, * = Both        *[BGP/170] 1d 00:43:22, localpref 100
                      AS path: XXX XXX XXX XXX I
                    > to via t3-0/0/1.0
                    [BGP/170] 1d 00:43:28, localpref 100
                      AS path: XXX XXX XXX XXX I
                    > to via t3-0/0/0.0

But a show route forwarding-table destination shows me only one

Routing table: inet
Destination        Type RtRef Next hop          Type Index NhRef Netif        user     0      ucst    25 101673 t3-0/0/1.0

What am I doing wrong?

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