Re: Internet Uselessness

Andy Malis (malis@CC5.BBN.COM)
Tue, 21 Jul 87 12:11:42 -0400


Your impression is correct: many X.25 networks (e.g. TELENET) set
up a path at call setup time and then force all packets along
that fixed path, just using the VC number for identification.

Your inference is also correct: in BBNCC networks, the same
underlying packet format (and dynamic adaptive routing) is used
for both AHIP and X.25 traffic.

If you are interested in the workings of the backbone subnet, you
might like to read my RFC 979. It is the functional
specification for the PSN's new End-to-End protocol, which is
being implemented in PSN 7.0 (PSN 6.0 is now running in the
subnet). My statement above concerning packet formats and
routing is true for both the existing and the new EEs.


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