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From: ssw@cica.cica.indiana.edu (Steve Wallace)
Newsgroups: comp.dcom.sys.cisco
Subject: Re: Recommended maximum number of serial lines on a gateway
Message-ID: <10270@cica.cica.indiana.edu>
Date: 31 Jan 91 00:09:26 GMT
References: <31893@boulder.Colorado.EDU>
Organization: Center for Innov. Comp. Appl., Bloomington, IN
Lines: 17

In <31893@boulder.Colorado.EDU> vaf@Valinor.Stanford.EDU (Vince Fuller) writes:

>Does anyone have any good estimates for what the maximum number of serial
>lines, both T-1 and 56KB, a single CSC-3 AGS or MGS system (with one Ethernet)
>can be expected to handle? At present, we limit our routers to 12 56KB ports
>(on 3 SCI's) or 4 T-1 ports (on 2 MCI's) and don't believe we are suffering any
>bottlenecks. If we assume that we want to allow each T-1 the potential to run
>at full-speed, we're probably limited to 6 ports (6x1.5MB = 9MB) by the speed
[stuff deleted]

Remember, a T1's 1.5Mbs is full duplex, ethernet is not.  There's
also no contention for the media.  I'd guess that 3 T1s = 1
ethernet.


Steven Wallace
ssw@silver.ucs.indiana.edu