Good Question!
I have read that IS-IS can accept more nodes than OSPF. Yet, I find that
Juniper is pushing IS-IS and the US Govt has some networks on IS-IS. Black
in the IP Routing Protocols basically states it is an IP Protocol but is not
used in the internet or much elsewhere for that matter.
ginal Message -
From: "Curtis Rose"
To:
Sent: Sunday, May 20, 2001 11:20 PM
Subject: Re: How is IS-IS more scalable than OSPF? [7:5207]
> Good Question!
>
> I have read that IS-IS can accept more nodes than OSPF. Yet, I find that
> Juniper is pushing IS-IS and the US Gov
[EMAIL PROTECTED]
Subject: Re: How is IS-IS more scalable than OSPF? [7:5207]
I still can not leave that question alone. It is a good question. Why is
IS-IS for large networks? The why is the key.
http://www.juniper.net/techcenter/techpapers/23-02.html
.Design for Scalability
Scalab
>BTW, I have been told by folks who work in really big networks that none of
>the routing protocols scale beyond 4-5K routers. As an interesting aside, a
>few weeks ago on NANOG there was a discussion about the largest RIPv1
>network in existence. It was revealed that until a year or two ago, Xero
-
From: Curtis Call [mailto:[EMAIL PROTECTED]]
Sent: Monday, May 21, 2001 6:38 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject:RE: How is IS-IS more scalable than OSPF? [7:5207]
>BTW, I have been told by folks who work in really big networks that none of
>the r
>Chuck
>
>-Original Message-
>From: Curtis Call [mailto:[EMAIL PROTECTED]]
>Sent: Monday, May 21, 2001 6:38 PM
>To: Chuck Larrieu
>Cc: [EMAIL PROTECTED]
>Subject:RE: How is IS-IS more scalable than OSPF? [7:5207]
>
>
> >BTW, I have been
ly!
Chuck
-Original Message-
From: Curtis Call [mailto:[EMAIL PROTECTED]]
Sent: Monday, May 21, 2001 6:38 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: How is IS-IS more scalable than OSPF? [7:5207]
>BTW, I have been told by folks who work in really big networks
-Original Message-
From: Curtis Call [mailto:[EMAIL PROTECTED]]
Sent: Monday, May 21, 2001 9:28 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject:RE: How is IS-IS more scalable than OSPF? [7:5207]
That's true, I didn't bother to try the math at all but i
Think OC192 ;->
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Andras Bellak
Sent: Monday, May 21, 2001 10:01 PM
To: [EMAIL PROTECTED]
Subject: RE: How is IS-IS more scalable than OSPF? [7:5207]
Anybody want to guess the amount
1, 2001 10:15 PM
To: [EMAIL PROTECTED]
Subject: RE: How is IS-IS more scalable than OSPF? [7:5207]
-Original Message-
From: Curtis Call [mailto:[EMAIL PROTECTED]]
Sent: Monday, May 21, 2001 9:28 PM
To: Chuck Larrieu
Cc: [EMAIL PROTECTED]
Subject: RE: How is IS-IS more sca
So some people have said that IS-IS is more scalable because it doesn't run
Dijsktra as much as OSPF does. OK, then why not? Is it because of the
partial-routing update thing, or is there more to it?
Also, I agree that IS-IS level-1 areas are by their nature "totally stubby".
But that doesn't c
First, don't misunderstand me. ISIS and OSPF are both good protocols,
and the decision to use one or the other in a given provider network
can come down to personal preference. OSPF has a lot of features
that tend to be needed more in an enterprise, but can be
bandwidth-conserving from a POP
See my earlier comments to Chuck.
>So some people have said that IS-IS is more scalable because it doesn't run
>Dijsktra as much as OSPF does. OK, then why not? Is it because of the
>partial-routing update thing, or is there more to it?
True, both run Dijkstra, but ISIS allows longer timer set
all [mailto:[EMAIL PROTECTED]]
>Sent: Monday, May 21, 2001 6:38 PM
>To: Chuck Larrieu
>Cc: [EMAIL PROTECTED]
>Subject:RE: How is IS-IS more scalable than OSPF? [7:5207]
>
>
> >BTW, I have been told by folks who work in really big networks that none
of
> >
Literally!
> >
> >Chuck
> >
> >-Original Message-----
> >From: Curtis Call [mailto:[EMAIL PROTECTED]]
> >Sent: Monday, May 21, 2001 6:38 PM
> >To: Chuck Larrieu
> >Cc: [EMAIL PROTECTED]
> >Subject:RE: How is IS-IS more scalable
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