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To: Glenn McDougall who wrote (6376)9/7/1998 9:32:00 AM
From: Glenn McDougall  Read Replies (1) | Respond to of 18016
 
Cisco's CTO Judith Estrin on networking futures

infoworld.com.
From Asnd Thread (djane)
September 2, 1998

By Stephen Lawson
InfoWorld Electric

Cisco Systems' acquisition in March of Precept Software, a provider of multimedia
networking products, also brought longtime data networking pioneer Judith Estrin to the
company. Formerly president of Precept, Estrin was appointed Cisco's chief technology
officer when the acquisition went through. She recently spoke with InfoWorld Senior
Writer Stephen Lawson about some of the challenges facing the industry.

InfoWorld: As well as its traditional data networking rivals, Cisco is now competing with
traditional voice companies like Lucent and Nortel. How will you compete?

Estrin: The reason Cisco is competing more with the players you discussed is really
twofold. One is that the world is converging and that the old paradigm was separate
networks for telephony and for data. The new paradigm is that we're looking at virtually
everything as digital and everything as packets.

If you look at where Cisco's roots are, it is we who really understand moving packets
and
moving digital data. We are not having to go through the transition of having thoughts in
circuits, and figuring out the packet world.

The other reason we're suddenly competing with these folks is, they've realized how
interesting the data world is now, as networking has become more mission critical.

InfoWorld: What is inhibiting the use of the Internet for new applications?

Estrin: There are three things that are needed to use the Internet in different ways. One is
bandwidth. And it's not just bandwidth in the core, it's bandwidth to the home. The
technologies are now there, and it's a question of deploying them.

The second thing is reliability. If you looked at the Internet industry five years ago, we
clearly were not designing [for the requirements of] mission-critical applications. But
that's
not true today. Are we 100 percent there? Probably not. Are we close? Yes.

The last thing is security. A lot of the security products are there today, but one of the
missing pieces is, how easy are they to use? One of the advances that you'll see over the
coming year is [in] how you set security policies and how you make it easy to use and
manage your security systems.

InfoWorld: What is needed to move beyond the Internet's current 'best effort'
prioritization capabilities?

Estrin: Many of the technologies are there. WDM [Wave Division Multiplexing] is very
important, high-speed routers are very important. But I don't think there is some big
megaswitch. I think that the core routers need to continually be faster.

I guess it's an evolution from where we are, continuing to have faster and faster core
routers and then being able to aggregate.

InfoWorld: What are the benefits of optical networking for the enterprise?

Estrin: The theory is that [enterprises] get cheaper bandwidth, because if the service
provider can get more bandwidth at lower costs, then they ought to be able to pass that
to
their enterprise customers.

InfoWorld: How will WDM and ATM coexist in carrier networks?

Estrin: I think it all depends on when you went to the market, what your legacy systems
are. People who are doing multiservice integration today are deploying ATM because
you
don't yet have all of the capabilities in IP to give you what you need, and because your
voice and video is still primarily analog.

If you were building a totally new infrastructure today, where all your voice was digital,
all
your video was digital, and everything could be over IP, then ATM wouldn't play as
important a role and you might go directly to IP over WDM.

InfoWorld: How important is Version 6 of the IP specification, IPv6, and how long
before
it plays a role?

Estrin: When I have my purist head on, I think it will absolutely need to happen within
the
next 10 years, but, practically, we've managed to have NAT [Network Address
Translation] boxes and [other] things cope with the current problems with IPv4. We
need
to have [IPv6] in case we need it.

InfoWorld: How do you respond to the criticism that Cisco doesn't innovate anymore,
but
just acquires and gradually integrates start-ups with new technology, and that by doing
this
it is slowing the pace of technological development?

Estrin: One of the strengths of Cisco is that instead of having an incredibly strong
not-invented-here syndrome, there's a strong culture of saying, 'We know that we're the
smartest, but if we missed something because we were focusing elsewhere, we're going
to
go acquire it and bring it to our customers.'

I think it's a question of focusing on where we invent and where not. Have we
sometimes
thought we were inventing and didn't do it quite as well, and found someone [to
acquire]?
Yes. Every company makes those trade-offs.

In terms of how quickly we integrate acquisitions, my guess is sometimes it's been done
well and sometimes it hasn't.