Re: OSPF NSSA

From: abdul_rahim@xxxxxxxxxxxxxx
Date: Wed May 31 2000 - 17:44:17 GMT-3


   

Thats the sort of info I was looking for
Where is that stuff written in documented form ?
Well thanks any way

Abdul

"Kevin M. Woods" <kev@nil.org> on 05/31/2000 01:37:28 PM

To: Abdul Rahim/IS Operations/Operations/CCSI
cc: Earl Aboytes <earl@linkline.com>
      ccielab@groupstudy.com
Subject: Re: OSPF NSSA

>From what I understand this does not work for the following reasons:

    - You obviously cannot generate a default Type 5 LSA from an internal
      NSSA router (via default-information originate).

    - Any default Type 7 LSA generated from a NSSA ABR will never be
      translated into a Type 5, therefore it will not be visible outside
      of the NSSA.

    - Any default Type 7 LSA generated from within a NSSA by an ASBR will
      have a forwarding address of 0.0.0.0 (meaning it can't be
      translated into a Type 5).

    - A NSSA ABR which is also an ASBR will not generate both Type 5 and
      and Type 7 LSAs for a redistributed default route (only a Type 5).

Kevin

// I know it works from the ABR but it does not works at any cost from a
// router which is internal to an NSSA area ( all its interfaces are in the
// NSSA ) and is the ASBR
// If any body knows to generate a default route from the NSSA router plz
let
// me know how,
// Thanks
// Abdul
//
//
//
//
// "Earl Aboytes" <earl@linkline.com> on 05/30/2000 10:27:47 PM
//
// Please respond to "Earl Aboytes" <earl@linkline.com>
//
// To: ccielab@groupstudy.com
// Abdul Rahim/IS Operations/Operations/CCSI
// cc:
// Subject: Re: OSPF NSSA
//
//
//
//
// I was able to get this to work once when I put the default information
// originate command on the ABR. I had two commands. The command that
// designates the area as a NSSA and the default information originate
// command.
//
// i.e.,
// router ospf 1
// default-information originate always
// area 2 nssa



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