Re: OSPFv3 Traffic Engineering TLVs and TE Node Address TLV

[Rahul Aggarwal <[e-mail]>]

Hi Venkata,

On Fri, 13 Feb 2004, Naidu, Venkata wrote:

> -> The Node Address TLV is intended to carry local addresses,
> -> that are not
> -> otherwise advertised in OSPF TE (router ID, TE links, Router IPv6
> -> Address). This can be clarified further in
> -> draft-raggarwa-ospf-te-node-addr-00.txt. Will that suffice ?
>
>   If possible, can you please look at my previous question ?
>
> http://peach.ease.lsoft.com/scripts/wa.exe?A2=ind0311&L=ospf&T=0&F=&S=&P=732
>

Sorry, I missed your previous email. The question was:

>In other words, why is Router LSA stub info not *sufficient*
> to learn all local addresses (if we enable active/passive
> OSPF routing over all those interfaces) ?

It doesn't cover all the cases, in particular a P2P interface. For a P2P
interface, as per RFC 2328:
    - If subnetted P2P: Link ID: subnet, Link Data: mask, Cost: Intf Cost

This is not sufficient to add the local intf address of the advertising
router, needed by TED.

    - If not subnetted P2P and nbr, LID: nbr address, LData: 0xffffffff,
      Cost: Intf Cost

Same problem as above. Thanks for the comment. We can clarify this in the
draft.

rahul

> Venkata.
>