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Community Member

ISDN on load balanced vpdn

I have an issue with vpdn :

I 2 LNS routers that I terminate l2tp vpdn sessions on them using load balance.

For analog dialup everything is fine , but for ISDN i need that the 2 sessions terminate on the same LNS , but I dont know how to control it as sometimes the first B session terminate on one LNS and the other B session terminate on the other which cause it not to work.

Can anyone advise ?

Thanks

3 REPLIES

Re: ISDN on load balanced vpdn

Hello,

can you post the configs of your LNS routers ? That in order to see how your load-balancing is configured, and to make appropriate recommendations...

Regards,

GNT

Community Member

Re: ISDN on load balanced vpdn

The LNS config is :

-------------------------------------

vpdn enable

!

vpdn-group 1

! Default L2TP VPDN group

accept-dialin

protocol l2tp

virtual-template 1

lcp renegotiation on-mismatch

l2tp tunnel password 7 01121F054D1B0201

!

interface Virtual-Template1

ip unnumbered FastEthernet0/0

peer default ip address pool dialup

ppp authentication pap

ppp multilink

-------------------------------------

The load balance is done through the radius server by DNIS . It returns to the NAS the IPs of the 2 LNS and the NAS terminate the tunnels on both LNS by round robin.

Community Member

Re: ISDN on load balanced vpdn

Hello , can anyone advise me regarding this ?

Thanks in advance

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