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Multilink Configuration - IP route-cache cef

cisco.balch
Level 1
Level 1

I have two routers each connected to an MPLS network with multiple T1's using multilink. The configuration for the multilink on the two routers is different.

Router A

interface Serial0/0/0:0

description MPLS

no ip address

encapsulation ppp

no ip route-cache cef

ip route-cache flow

load-interval 30

no cdp enable

ppp multilink group 1

hold-queue 256 out

Router B

interface Serial0/1/0

no ip address

encapsulation ppp

load-interval 30

no fair-queue

ppp multilink

ppp multilink group 1

On router a I am wondering if the "no ip route-cache cef" and "hold-queue 256 out" commands should be there and the same things for Router B "no fair-queue".

2 Replies 2

Giuseppe Larosa
Hall of Fame
Hall of Fame

Hello Martyn,

ip route-cache cef would be good to be placed again.

hold-queue 256 out increases the output queue to 256 packets.

my guess is that someone has tried to find a workaround to some problem like losses on the multilink bundle and so he/she has disabled CEF switching and increased the size of the queue in an hope to overcome this problem.

no fair-queue: again generally speaking having fair-queue enabled is generally better.

Hope to help

Giuseppe

one quick qustion..what fair-queue will do in a multilink..Is it need to be matched at both the end configuration...

Thanx in adv..

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