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Y.1711 requirements from IETF

  • From: "David Allan"<dallan@nortelnetworks.com>
  • Date: Thu, 21 Mar 2002 11:59:45 -0500
  • Cc: Shahram Davari <Shahram_Davari@pmc-sierra.com>, "'Thomas D. Nadeau'" <tnadeau@cisco.com>, "'mpls@uu.net'" <mpls@UU.NET>

Title: RE: Y.1711 requirements from IETF

George:

Comments in line.

>> Is suggesting that all LSRs have the full internet routing table and MPLS full connectivity a realistic example.

> I got out of the business of telling operator how to run their networks long ago.  I would not suggest this, but
> our implementation will support it.  The way most ISPs currently run, turning on LDP without doing anything
> else will get you exactly the above. 

Wasn't telling anyone anything, just commenting based on my understanding of current practice. 
 
>> I thought eliminating BGP in the core simply meant default route to the BGP speakers, and full one-hop mesh of BGP
>> speakers. Otherwise the internet COULD not scale as every LSR would require a full routing table, and metrics presumably

>> would be leaked from BGP into the IGP. Could such a network **EVER** converge?

> Yes you can use MPLS to eliminate BGP in the core.  Most ISPs today, however, are carrying the full internet routing table

> in *all* of their routers and they do converge.

I stand corrected...

cheers
Dave
>