[ih] EGP vs. BGP

[jnc at mercury.lcs.mit.edu (Noel Chiappa)]

    > From: Dave CROCKER <dhc2 at dcrocker.net>

    > did EGP reflect this flexibility?

In the original versions, no. Rosen's original concept for it was that it was
only supposed to handle topologies which did not have cycles (i.e. alternate
paths). That limitation got to be a real hassle...

    > what were the incremental benefits provided by BGP?

Which version of BGP? (This is all from memory, should be checked against the
relevant RFCs...)

IIRC, the original version (versions?) of BGP only relaxed the cycles
constraint, by using EI-N loop detection. Then there was some more stuff I
don't remember, then masks got added to support CIDR, and since then there
has been even more stuff (e.g. communities).

	Noel