Subject: Re: What is a MIB-II IfIndex like

From: "Naidu, Venkata" <[email-masked]>
Date: Wed, 11 Sep 2002 11:31:41 -0400

Li,

->      yes, it matters in one of my researches. I have to
-> determine the interface type just by its router LSAs.
->     Would you suggest some means to achieve this?

  You can assume that, if the first byte in the Link Data
  is zero then it can be an unnumbered link else it is
  numbered.

  Most of the implementations (including Moy's) does the
  same trick. It is safe, because, it is assumed that ifindexes
  are increasing starting from 1 and can't grow more than 2 bytes
  Unless, your router is configured with more than 2^27
  links.

--
Venkata.