[rbak-nsp] sh l2tp global ipc - ppp sessions/card

[Richard Clayton]

David

Thanks for the response, my environment is dual homed to lac network which
is loadbalancing over the two links so the lac's can connect over either
circuit.  Basically its a BT 21cn host link which we are loadbalancing,
would qos towards the lac still work with this setup.

Thanks
Rick

On 8 January 2011 13:52, David Freedman <david.freedman at uk.clara.net> wrote:

> The ³load sharing² of l2tp subscribers to multiple cards is when acting as
> an LNS is the default configuration.
>
> In order to force subscribers to terminate on a particular card, use the
> ³lns card selection² configuration directive under your l2tp-peer to the
> LAC/LTS
>
> ³lns card selection route² will terminate the subscribers on the card to
> which the route to the LAC is present as the preferred option,
>
> "lns card X preference Y" will set preference of Y for card X either in
> addition to or instead of the route selection algorithm above.
>
> The goal if you are doing any kind of QoS back to the LAC is to have the
> subscriber terminating on the same card as the route back to the LAC
> exists,
> since the box does not do any QoS across linecards internally (between the
> PPAs) , this means configuring the "lns card selection route" on all LAC
> peers ideally , but this puts you in the unfortunate situation of having to
> change cards automatically (and dump all subs on the card) should you be
> multihomed to the LAC and lose the link on this card (i.e the route
> changes).
>
> Dave.
>
>
> On 08/01/2011 13:13, "Richard Clayton" <sledge121 at gmail.com> wrote:
>
> > Looking at the output of the command 'show l2tp global ipc' we have 5
> > subscribers on card 1 and 17 on card 2, what part of the configuration
> steers
> > subscribers to card 1 and 2 and what is best practice for subscriber/card
> > termination.
> >
> > I have read that if subscriber shaping is configured the subscribers have
> to
> > terminate on the same card the L2TP tunnel terminates on, how do I ensure
> that
> > L2TP and subs all connect to same card (or is this not best practice)
> >
> > Num Circuits (L2TP):
> >                1:     5,   2:    17,   3:     0,   4:     0,   5:     0,
> >                6:     0,   7:     0,   8:     0,   9:     0,  10:     0,
> >               11:     0,  12:     0,  13:     0,  14:     0,
> > Thanks
> > Rick
> >
> >
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>
> --
>
> David Freedman
> Group Network Engineering
>
> david.freedman at uk.clara.net
> Tel +44 (0) 20 7685 8000
>
> Claranet Group
> 21 Southampton Row
> London - WC1B 5HA - UK
> http://www.claranet.com
>
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>
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>
>
>
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