Re: OSPFv2 Opaque LSAs in OSPFv3

[Alex Zinin <[e-mail]>]

Venkata,

Monday, October 14, 2002, 7:09:59 AM, Naidu, Venkata wrote:
...
>   That view of looking at IGPs as just "hop-by-hop routing protocols"
>   should go away. Now with the new opened doors in Optical networking,
>   Advanced (diffserv) TE enhancements, VPNs, those good old IGPs became
>   like transport protocols. The applicability of these IGPs for
>   transportation of transparent data will increase in future years.
>   May be, we (IGP guys) should get a big picture of how/why/what TSVWG
>   is doing for new requirement in transport protocols (such as SCTP
>   etc etc). How can we do the same stuff with minimal changes in IGPs
>   for the benefit of our "IGPs applications" ?

IGPs (and EGPs for that matter) are _routing_ protocols, they are
_not_ a universal transport system.

>   Finally, the % of code in IGPs used for SPF and hop-by-hop routing
>   table calculations is decreased. That % is grabbed by other
>   purposes. IGPs are no more self-driven, rather dictated by some new
>   applications requirements.

>   If we fail to tune our IGPs for all such applications then, new
>   protocols will emerge (for example, LDP). Those new XXX protocols
>   will look exactly like "stripped OSPF" - in 1000ft view.

And this is the right thing to do. There are reasons we don't
distribute DNS records through routing. Unfortunately, we keep
forgetting these reasons and concentrate on reusing existing packet
parsing code...

Alex