RE: (PM) PM3 as LNS (fwd)

John Storms (jstorms@livingston.com)
Tue, 23 Mar 1999 12:03:08 -0800

In the next open beta release for PM3, when the PM3 is configured as a LNS
it will support upto 64 L2TP sessions and upto 100 L2TP tunnels. Sessions
are inside tunnels. A tunnel is formed between LACs and LNSs. It is
possible to have empty tunnels, since tunnels are not torn down when all
sessions within a tunnel are terminated.

At 11:12 AM 3/23/99 -0800, MegaZone wrote:
>But what if IPs are handled by RADIUS? RADIUS has no limit on the number
>of IPs, and servers like RABM can do local pooling. Is there any hard limit
>in ComOS on tunnels aside from IPs?

The limits are hard limits for the max number of sessions and tunnels. The
LNS terminates L2TP with virtual ports which is a fixed number.

>>The PM4 can handle 500 Sessions per LNS card.

This is true the LNS card, which is just like a Quad-T1 (just without line
ports and without modems), will terminate upto 500 sessions.

The Quad-T1 will support upto 94 L2TP sessions.

NOTE: The PM4 as a whole can support upto 100 tunnels. So the session
limit is card by card, while the tunnel limit is by chassis.

>I wonder what they'll call these - they're basically CPU farms and I could
>see them being used for L2TP, IPSec, etc. Hey - PM4-Limux. ;-) Do we know
>if 500 sessions is a HW limit or are they just playing conservative to
>ensure performance.

The limit is basically a number that was pulled out of the air.

>>You can put 9 LNS cards in each PM4 causing it to handle 4500 Sessions.

Yes.

>I'd probably use 8 with 2 NMCs just to be safe - redundancy.

The backup SMM feature will be available in a future release, but not in
the next open beta of the PM4.

---
jstorms@lucent.com (Galactic Hero)
Diplomacy:  The art of saying good doggie
while seaching for a big rock.
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