Hey guys and gals,
I have never worked in an ISP, so I have no idea how they run. I'm just
curious, do they run an IGP in addition to IBGP and is it fully
synchronized? I'm just curious to see how it's done in the real world.
--
RFC 1149 Compliant.
Get in my head:
http://sar.dynu.com
Mess
ISP's typically run one of IS-IS, or OSPF as their IGP's and manage only
link and loopback address space within it. IBGP is always fully meshed,
although most use tools like Route Reflection and Confederations to avoid
the n*(n-1)/2 scaling issues IBGP can present. Synchronization is an
ant
Well now, wouldn't that be interesting - an ISP that didn't run an IGP
Hmmm. In fact, no less an authority than Radia Perlman has touted the
merits of a single unified routing protocol that could be used for both
intra- and inter-domain routing. For those who don't know who she is, Ms.
Really should read my own posts before I send them sometimes. I meant to
say one of either maximize convergence speed, or minimize convergence time,
but really said neither :)
At 08:34 PM 3/17/2002 -0500, Peter van Oene wrote:
>ISP's typically run one of IS-IS, or OSPF as their IGP's and mana
er
van Oene
Sent: Sunday, March 17, 2002 8:35 PM
To: [EMAIL PROTECTED]
Subject: Re: IGP's in ISP [7:38614]
ISP's typically run one of IS-IS, or OSPF as their IGP's and manage only
link and loopback address space within it. IBGP is always fully meshed,
although most use tools like Route
On our backbone we use Juniper routers. Also, we do not run OSPF either.
Daniel Ladrach
CCNA, CCNP
WorldCom
-Original Message-
From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 18, 2002 7:22 AM
To: [EMAIL PROTECTED]
Subject: RE: IGP's in ISP [7:38614]
Is it a
aniel Ladrach
> CCNA, CCNP
> WorldCom
>
>
> -Original Message-
> From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
> Sent: Monday, March 18, 2002 7:22 AM
> To: [EMAIL PROTECTED]
> Subject: RE: IGP's in ISP [7:38614]
>
>
> Is it a good assumption that most ISP's
entire
network redesign. I think Ci$co wouldn't mind that to much though. :)
Robert
-Original Message-
From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 18, 2002 7:22 AM
To: [EMAIL PROTECTED]
Subject: RE: IGP's in ISP [7:38614]
Is it a good assumption that most
ess memory, less CPU etc. If this is correct, why
>don't ISPs run that as their interior routing protocol?
>
>Jeffrey Reed
>Classic Networking, Inc.
>
>-Original Message-
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Peter
>van Oene
>Sent: Sund
ISIS
Daniel Ladrach
CCNA, CCNP
WorldCom
-Original Message-
From: Steven A. Ridder [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 18, 2002 9:07 AM
To: [EMAIL PROTECTED]
Subject: Re: IGP's in ISP [7:38614]
Do you have an IGP?
--
RFC 1149 Compliant.
Get in my head:
http://sar.dyn
---
> From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
> Sent: Monday, March 18, 2002 7:22 AM
> To: [EMAIL PROTECTED]
> Subject: RE: IGP's in ISP [7:38614]
>
> Is it a good assumption that most ISP's, big & small run Cisco routers in
> their core networks? If so, why don
When I used to work at UUNET (now Worldcom) they used ISIS as their IGP.
Here at BT, OSPF is used.
-Original Message-
From: Ladrach, Daniel E. [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 18, 2002 14:00
To: [EMAIL PROTECTED]
Subject: RE: IGP's in ISP [7:38614]
On our backbone w
etc. If this is correct,
> why
> > don't ISPs run that as their interior routing protocol?
> >
> > Jeffrey Reed
> > Classic Networking, Inc.
> >
> > -Original Message-
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Pet
t;Cisco router than OSPF... less memory, less CPU etc. If this is correct,
why
> >don't ISPs run that as their interior routing protocol?
> >
> >Jeffrey Reed
> >Classic Networking, Inc.
> >
> >-Original Message-
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTEC
t;
> Jeffrey Reed
> Classic Networking, Inc.
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Peter
> van Oene
> Sent: Sunday, March 17, 2002 8:35 PM
> To: [EMAIL PROTECTED]
> Subject: Re: IGP's in ISP [7:38614]
>
> I
MAIL PROTECTED]...
> > On our backbone we use Juniper routers. Also, we do not run OSPF either.
> >
> > Daniel Ladrach
> > CCNA, CCNP
> > WorldCom
> >
> >
> > -Original Message-
> > From: Jeffrey Reed [mailto:[EMAIL PROTECTED]]
> >
16 matches
Mail list logo