[c-nsp] MPLS TE Autoroute with OSPF and IS-IS?

[Pete Templin]

Adam Greene wrote:
> Pete,
> 
> It would be interesting to know as well from a very high-level standpoint
> what's motivated you to switch to IS-IS from OSPF ....

I'm quoting three primary reasons to those who ask:

1:  Security - since ISIS uses CLNS as its transport, and we don't speak 
CLNS to providers or customers, it's much harder to blow up our IGP.
2:  Stability - word on the street says the ISIS coders at Cisco know 
that they're coding the IGP for large service providers, and take less 
risks (but also seem to introduce features earlier).
3:  Safety - we're approaching the time when customers will want to do 
dynamic routing over their MPLS VPNs.  We anticipate the early birds 
will use OSPF, if they don't use BGP, and would greatly prefer that our 
IGP be completely different than that IGP.

pt