Re: OSPF LSA type 3 filtering

Most ISPs actually use a flat L2 area in IS-IS, or a flat Area 0.
Areas are seldom used in the SP world.

Btw, a good reference for this is Packet Pushers, Episode 89.

--
Marko Milivojevic - CCIE #18427 (SP R&S)
Senior CCIE Instructor - IPexpert
On Fri, Jan 4, 2013 at 10:36 AM, Joseph L. Brunner
<joe_at_affirmedsystems.com> wrote:
> Already explained b
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>
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> https://learningnetwork.cisco.com/thread/40954
>
>
>
> biggest reason from a practical standpoint b ISP to BIG to place area 0 in
> one place! LOL
>
>
>
> area 0 requirement is like a bsecond dude in the bed requirementb. Bitch is
> out
>
>
>
> From: Imran Ali [mailto:immrccie_at_gmail.com]
> Sent: Friday, January 04, 2013 1:35 PM
> To: Marko Milivojevic
> Cc: Joseph L. Brunner; Carlos G Mendioroz; Brian McGahan; Narbik Kocharians;
> Cisco certification
>
>
> Subject: Re: OSPF LSA type 3 filtering
>
>
>
> marko i need to know why they use  is-is over ospf
>
> On Fri, Jan 4, 2013 at 8:53 PM, Marko Milivojevic <markom_at_ipexpert.com>
> wrote:
>
> In reality, for this purpose, IS-IS and OSPF are pretty much the same
> (Type 2 vs Pseudonode LSP). They both use a very similar approach to
> solve the same calculation problem.
>
> Carriers tend to use IS-IS for one other reason (to some extent
> remedied by OSPFv3). This is a separate discussion though.
>
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor - IPexpert
>
>
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>
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