mtraynor@hpindwa.HP.COM (Michael Traynor) (08/10/90)
I'm looking for some information on Source Routing on Token Ring networks.
The IBM T/R Archictecture (at least my version) states that the routing
field is up to 18 bytes in length. Other "standards" indicate a push to go
to 30 byte routing fields.
Does anyone know what the current and future direction is? Does anyone
really support 30 byte fields?
Also, IBM states that each 2-byte pair in the routing field (except the
header) contains an n-bit bridge identifier and a (16-n)-bit ring
identifier. Elsewhere, I have seen reference to a 4-bit (n=4) bridge
identifier and a 12-bit ring identifier.
What's the norm? Is there a standard value for "n"?
Please send repsonses to me directly.
Thank you,
Mike Traynor
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