[c-nsp] Cisco MultiLink PPP

[Rodney Dunn]

Right on the money.

There are two driving forces.

a) L1 fault detection that brings the line down
b) L2 PPP keepalive timers set on the *member* links
   of the bundle.  Minimum time is 1 sec.
   I haven't tried setting it to 1sec with no retry.
   That seems pretty dangerous for false positives to me.

Given that L1 fault detection can be on the order of
2 seconds I'd say 1 sec keeps on the member links with
3 retries would be as low as I'd go.

Rodney

On Thu, Mar 24, 2005 at 06:57:51AM -0800, Bruce Robertson wrote:
>  > What's the lead time like to detect a link failure in
>  > a MLPPP bundle?
> 
> Once the link failure is detected, it's pretty much instantaneous.  If you 
> test it with 'shutdown', though, you'll see a delay of a few seconds unless 
> you configure 'keepalive 1' on the individual T1s.
> 
> --
> Bruce Robertson, President/CEO                           +1-775-348-7299
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