Re: PM2eR with integrated router

Mark B. Kinney (mark@host.ka.net)
Sun, 2 Jun 1996 11:55:25 -0400 (EDT)

On Sun, 2 Jun 1996, Dennis Simpson wrote:

> Dave Carmean wrote:
> >
> > In a previous message, Siegfried T. wrote:
> > >
> > > We have limited budget so in the beginning, we can only have 64k leased
> > > line, a Class C. My question is: Can I simply connect the leased line to
> > > the syncronous WAN port of the PM2eR and have the portmaster do all the
> >
> > The PM2eR will handle this no problem. Sounds like a good
> > start. It can get into trouble when trying to route a lot of traffic at
> > T1 speeds, but will do the 64K in its sleep. Once you get going, you
> > should buy a separate router, so that if one or the other fails, you
> > still have a backup.
>
> I'll second this, but from a performance perspective. When we hit 512K,
> and had a fair bit of traffic on the serial ports as well as doing
> routing, we had DMA overruns in the PM. Putting in a Cisco 2501 made
> a significant difference in our observed backbone utilization, so we
> are left to assume that the PM was indeed the bottleneck.
>
> dennis
> --
> /-----------------------------------------------------------------------\
> |Dennis Simpson dennis@bconnex.net http://www.bconnex.net/~dennis/ |
> |"A bad xhost is a good thing to waste. Here, have a cookie." -Brian Onn|
> \-----------------------------------------------------------------------/
>

Will this work with frame relay??? Example: 56K frame relay circuit,
one Adtran CSU/DSU connected to one of the Portmaster ports?

-Mark