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To: Finder who wrote (330)10/16/1997 5:46:00 PM
From: Maverick   of 1629
 
Vint Cerf, Part III
LT: Who makes router interfaces at OC-48 speeds?

Cerf: That's an interesting question. We are looking for routers or
switches that run at those speeds. There are proposals and
developments on the table that are aimed at that speed. There's Juniper
Systems [Inc.], there's Cisco Systems [Inc.]. There are a couple of
others and we are watching all of them and staying in touch with the
principals because we are very interested in getting test equipment to
see how all of it works.

The issue here is not just hardware; it's also software. Unless
[OC-48-capable routers and switches] come with adequate software
for management, for routing protocols, PPP and other protocols--plus a
Quality of Service [QoS] capability despite the high bandwidth--they
may not serve our needs.

So, my biggest worry right now is less the hardware than it is the
software. Even if you have the fastest machine on the earth, if you don't
have any software for it, it doesn't do me any good.

LT: Are you still using Cisco interfaces on MCI's OC-12 network?

Cerf: What we are using right now is a FORE Systems [Inc.] ATM
network running at dual OC-12. On the outside of that, we interface the
Cisco routers at multiple OC-3s. We are looking forward to the time
when Cisco Systems can handle a higher bandwidth aggregate or higher
single-port capacity. Right now they can handle multiple OC-3s, but
they don't handle 622Mbps.

LT: And that's still considered an OC-12 network?

Cerf: Yes, it is. The fact that the maximum router bandwidth on any one
channel is OC-3 does mean that some of the delay statistics are
influenced by the lower data rate, but it's marginal. The bulk of the traffic
is being carried across the country at 622Mbps. So there's a hop from
the router to the FORE Systems that is at OC-3 and then the rest of it
is all at 622Mbps.
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