[c-nsp] L2TP & multilink

[Oliver Boehmer (oboehmer)]

> Well, lcp renegotiation does not help, 

Hmm, it looks like your client is not ready to do multilink, it doesn't
send MRRU in its CONFREQ.

> and i can not configure ppp multilink 
> on LAC, because we lose LAC accounting with it turned on. The LAC is
> Cisco PDSN (12.3(11)T3) - when i turn mlp on its virtual-template
> interface, the PDSN stops sending accounting on all sessions where
> MLP is negotiated. 

This is strange, there must be something else going on here.. But
anyway: Please check your client config. If it is configured correctly,
lcp reneg always should work.

	oli

> 
> Oliver Boehmer (oboehmer) wrote:
>>> Oliver Boehmer (oboehmer) wrote:
>>> 
>>>>> Two l2tp sessions from one host come to the LNS through the LAC.
>>>>> I've configured virtual-template for vpdn group with 'ppp
>>>>> multilink', but the sessions are treated as different, each is
>>>>> given separate IP address and mlp is not negotiated. What can be
>>>>> wrong with that?
>>>> 
>>>> can you send "debug ppp neg" for the two "calls" which are not
>>>> bundled?
>>> 
>>> attached
>> 
>> 
>> Mulitlink has not been negotiated on the LAC (MRRU is missing in
>> ACK'ed LCP options). So either configure "ppp multilink" on the LAC
>> as well, or re-negotiate LCP on the LNS ("lcp renegotation always").
>> 
>> 	oli
> 
> --
> Alexander