[nsp] MPPP vs CEF

jlewis at lewis.org jlewis at lewis.org
Fri Aug 8 10:06:38 EDT 2003

On Fri, 8 Aug 2003, Duane de Witt wrote:

> The CPU load shoots up possibly because of the fragmentation that happens.
> Disable multilink fragmentation and see what happens.

I'll give that a try next time I try MPPP...but I'm still concerned about 

 FWIW, one other serious downside I noticed with multilink was any changes 
 to the multilink interface (including adding/removing members) seemed to 
 stop the flow of traffic momentarily (I remember this being a problem when 
 I used to use ISDN and the second B channel would come up on demand) and 
 doing something like "no cdp enable" would cause the multilink interface 
 to flap.

For this reason, is it best to split up the T1's into more than one 
multilink group and do per destination load sharing with the multiple 
multilink interfaces?

 Jon Lewis *jlewis at lewis.org*|  I route
 System Administrator        |  therefore you are
 Atlantic Net                |  
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