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> -p
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> *From: *Af on behalf of Carl Peterson <
> cpeter...@portnetworks.com>
> *Reply-To: *
> *Date: *Friday, June 8, 2018 at 1:52 PM
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> *To: *
> *Subject: *Re: [AFMUG] OSPF - How large can a flat network grow?
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From: Af on behalf of Eric Kuhnke
Reply-To:
Date: Thursday, June 7, 2018 at 6:06 PM
To:
Subject: Re: [AFMUG] OSPF - How large can a flat network grow?
Also worth mentioning that a lot of OSPF documentation available on the
Internet, makes assumptions that were valid in 2002 or so... When a ty
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> Paul
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> *From: *Af on behalf of Eric Kuhnke <
> eric.kuh...@gmail.com>
> *Reply-To: *
> *Date: *Thursday, June 7, 2018 at 6:06 PM
> *To: *
> *Subject: *Re: [AFMUG] OSPF - How large can a flat network grow?
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large can a flat network grow?
Also worth mentioning that a lot of OSPF documentation available on the
Internet, makes assumptions that were valid in 2002 or so... When a typical
router had a lot less DRAM and CPU. Such as a Cisco 3725/3745 or even something
smaller like a 2621
N was back then.
*From:* Gino A. Villarini
*Sent:* Thursday, June 07, 2018 5:47 PM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] OSPF - How large can a flat network grow?
Our network by all means is flat as all services converge into our
core.� We started by using vlans and qinq but later migrated to
Yeah, nightmare...
From: Eric Kuhnke
Sent: Thursday, June 07, 2018 6:33 PM
To: af@afmug.com
Subject: Re: [AFMUG] OSPF - How large can a flat network grow?
He's talking about having all routers in OSPF area 0, not a truly flat L2
broadcast-domain nightmare.
On Thu, Jun 7, 2018 at 5:15 PM
even know what a VLAN was back then.
>
> *From:* Gino A. Villarini
> *Sent:* Thursday, June 07, 2018 5:47 PM
> *To:* af@afmug.com
> *Subject:* Re: [AFMUG] OSPF - How large can a flat network grow?
>
> Our network by all means is flat as all services converge into our cor
atching evpn as the next step..
>
> From: Af on behalf of Lewis Bergman <
> lewis.berg...@gmail.com>
> Reply-To: "af@afmug.com"
> Date: Thursday, June 7, 2018 at 3:09 PM
> To: "af@afmug.com"
> Subject: Re: [AFMUG] OSPF - How large can a flat network grow?
>
18 at 3:09 PM
To: "af@afmug.com"
Subject: Re: [AFMUG] OSPF - How large can a flat network grow?
Gino would probably be your best source for advice as I'll bet he has one of
the largest networks of similar construction. I think he went MPLS to deal with
a variety of issues he was ha
eply-To: "af@afmug.com<mailto:af@afmug.com>"
mailto:af@afmug.com>>
Date: Thursday, June 7, 2018 at 3:09 PM
To: "af@afmug.com<mailto:af@afmug.com>" mailto:af@afmug.com>>
Subject: Re: [AFMUG] OSPF - How large can a flat network grow?
Gino would probab
Also worth mentioning that a lot of OSPF documentation available on the
Internet, makes assumptions that were valid in 2002 or so... When a
typical router had a lot less DRAM and CPU. Such as a Cisco 3725/3745 or
even something smaller like a 2621.
Probably still true if you're trying to do OSPF
This is a “unanswerable” question. In honesty, you can have 20k routes in OSPF
and it be responsive so the routing platform does not have a limit. The number
of routers, is another issue, if you have 500 routers all fiber connected and
they don’t go up/down much, then no big deal, however, if
As long as it’s stable you are nowhere near the limits of OSPF as a IGP, and
there are a number of fairly simple ways to start to segment the network when
you start to reach the limits. OSPF itself is fine but during network
instability situations you may run into issues with CPU on some of
Gino would probably be your best source for advice as I'll bet he has one
of the largest networks of similar construction. I think he went MPLS to
deal with a variety of issues he was having, including OSPF. But maybe Gino
can speak up on the issue.
Typically, if you didn't want to do anything
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