On Fri, 10 Sep 1999, Steven Saner wrote:
> This two message thread was on the list last week. I would like to see
> an example configuration for taking PRIs on a PA-MC-8T. I tried to do
> this a while back and couldn't figure it out. What I want to do is use
> a single PRI to support several BRI customers (possibly some with just
> one channel and others with two). Does this require a seperate Dialer
> interface for each BRI connection? I was not able to create multiple
> dialer interfaces for a single PRI. Am I trying to do something that
> isn't possible?
There is no other specifics in MC adapters, except immanent limitation
of "objects" in adapter no more than 128.
So, you cannot use all interfaces as PRIs, beacuse T1 PRI consists of
25 "objects" and E1 PRI consists of 32 ones. Equally, you cannot split
all your interfaces in DS0s, because this gives the same number of
"objects" (each DS0 is an "object" and interface as a whole is an
"object" too).
Despite this peculiarity, there is no specific in PRI configuration
and all examples from CCO work just fine.
>
> Thanks for any help.
>
>
> On Fri, Sep 03, 1999 at 08:34:16PM -0700, Ron Buchalski wrote:
> > >From: "Robert J. Adams" <radams@siscom.net>
> > >To: <cisco-nsp@puck.nether.net>
> > >CC: <list@inet-access.net>
> > >Subject: PA-MC-8T
> > >Date: Fri, 3 Sep 1999 19:00:34 -0400
> > >
> > >Hello all,
> > >
> > >On my search for a high density ISDN dialup solution many have pointed me
> > >to
> > >the 7206. So, I went that route. We are currently using a 7206 with a
> > >PA-MC-8T to answer ISDN and it's working great. I have a quick question
> > >though.
> > >
> > >From what I hear, I can only fit 128 people per PA-MC-8T.. basically
> > >getting
> > >use of 5 PRI out of 8.. I was planning on using the other 3 T1 ports
> > Robert,
> >
> > The PA-MC-8T1 has a 128 channel HDLC controller, so you are limited to 128
> > total "connections". A connection could be a full T1, a FT1 (NxDS0), or a
> > DS0. So, if you wanted to maximize use of the 128 channels, you could
> > support five PRIs (23x5=115 HDLC channels), and have 13 more HDLC channels
> > available. So, three full-rate T1 customers would use three more HDLC
> > controllers, which is still within the 128-channel limit. Or, you could do
> > four FT1 customers per T1 (six channel bundles each, or 384kbps).
> >
> > Make sure that you have lots of DRAM in the router.
> >
> > -rb
> >
> > ______________________________________________________
> > Get Your Private, Free Email at http://www.hotmail.com
>
> --
> ==================================================================
> Steven Saner SouthWind Internet Access, Inc.
> ssaner@southwind.net Systems/Network Administrator
> http://www2.southwind.net/~ssaner http://www.southwind.net
> 263-7963 Wichita (800)525-7963
>
--------------------------------------
Basil (Vasily) Dolmatov CCNP-Security, CCDA
East Connection ISP, Moscow, Russia. (http://www.east.ru)
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