IS-IS is most definetly still alive and kicking. The US military utilizes
it, and it works very well. OSPF is a different animal, and Rik, I would
disagree with your statement as to its scalability. IS-IS was designed to
provide complete non-vendor dependent integration at the request of the US
Government(ie Military), to accomadate its World Wide network.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Rik Guyler
Sent: Thursday, November 16, 2000 11:50 AM
To: '[EMAIL PROTECTED]'
Subject: RE: IS-IS use??
Well, I believe that Cisco's take on this is that OSPF does not scale as
well for very large networks as does IS-IS. At least so sayeth an
instructor SE that I happen to know.
Rik
-----Original Message-----
From: Priscilla Oppenheimer
To: [EMAIL PROTECTED]
Sent: 11/16/00 1:20 PM
Subject: RE: IS-IS use??
At 09:38 AM 11/16/00, Spolidoro, Guilherme wrote:
>UUNet for example uses IS-IS on their core while the rest (or the
majority)
>of the ISPs use OSPF. I wonder why UUNet chosed for IS-IS instead of
OSPF.
>Maybe somebody on the list has an answer?
>
>Today I would chose OSPF over IS-IS because:
>
>- much more vendors support OSPF compared to IS-IS
>- it's my perception that OSPF is the direction chosen by IETF,
A few years ago a bunch of people wore T-shirts to an IETF meeting that
said, "IS-IS=0." They did this to bug Radia Perlman. &;-) It didn't
work.
These days the IETF seems to do a lot of work on both IS-IS and OSPF.
For a
while it looked like we could get by without knowing IS-IS. I don't
think
that's true anymore. The pendulum has swung back in its favor.
Priscilla
________________________
Priscilla Oppenheimer
http://www.priscilla.com
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