Date: Mon, 6 Jan 1997 17:03:27 -0800 (PST) From: Tony Li <tli@jnx.com> To: dennis@etinc.com (dennis) Cc: isp@freebsd.org Subject: Re: FreeBSD as T1 router Message-ID: <199701070103.RAA04945@chimp.jnx.com> References: <3.0.32.19970106184854.00a86bc0@etinc.com>
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X.25 is just a protocol...why would one protocol work at 4Mbs and not another? Well, because X.25 has a LOT more overhead. You might take a look at what's really required. The link level has retransmissions and sliding windows. And that's just for starters. Then, there's also the issue of MTU.... There is no good reason to be able to run Frame Relay at high speed and not X.25. Actually, there are some very, very good reasons. if anything, X.25 should be more reliable because it can be throttled by the receiver. We do X.25 at 10Mbs easily.....alas theres not a lot of need for it :( Such as... there's no X.25 switch that does 10Mb/s? ;-) Yes, certainly ET's serial card might do 10Mb/s, but the processor is just not there. Unless you've started shipping 300Mhz Alpha's, and then just mebbe. ;-) So what you're saying is that there are some things that work and some that don't, which kind of makes this whole discussion moot...if you happen to be using something that is "broken" (by your definition, whatever criteria you might be using), then you are up sh*ts creek. Correct. Sound like a crapshoot, no matter who the vendor is. Might as well save the money. Only if you want out of the game. Tony
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