Greetings All
I have a fairly Arcane BGP question, so any help will be appreciated
I'm specifically looking at the flags in the attribute type field of the
update packet.
Bit 0 is the optional/well known bit
Bit 1 is the transitive/non-transitive bit
What I can't figure out is what determines whether a well known attribute
is a
"well known mandatory" or a "well known discretionary"
mandatory and discretionary don't seem to be the same thing as transitive
and non-transitive (although they do seem similar)
but there is no bit (at least according to the documentation I'm
referenceing (internet routing architectures by halabi and BGP 4 by John
Stewart) which specifically states whether a well knonw is mandatory or
discretionary.
Any Help?
Thanks Tons
Tom Pruneau
Trainer Network Operations
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