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Re: [curtis@ans.net: Re: BGP4 stuff: Local Preference Computation]

Yakov Rekhter <yakov@cisco.com> Thu, 05 September 1996 20:17 UTC

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To: "John G. Scudder" <jgs@ieng.com>
Cc: bgp@ans.net
Subject: Re: [curtis@ans.net: Re: BGP4 stuff: Local Preference Computation]
In-Reply-To: Your message of "Thu, 05 Sep 96 15:25:49 EDT." <v03007823ae54d65762ae@[152.160.213.42]>
Date: Thu, 05 Sep 96 12:40:54 PDT
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From: Yakov Rekhter <yakov@cisco.com>
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John,

> This should be fixed by reclassifying LOCAL_PREF as well-known mandatory.

"Mandatory" means that it *always* has to be present. LOCAL_PREF is not
carried between external peers - just among the internal peers.

> [Other than the text being just plain wrong, the other possibility is that
> "discretionary" is being used to mean something like "this is only
> mandatory in some cases".  This is a terrible misuse of the language if
> true, and should still be fixed, if necessary by inventing some new term
> like "well-known sometimes-mandatory" or something.  (Note that the RFC
> nowhere defines "discretionary" so we are left with the dictionary
> definition, e.g. "left to discretion: exercised at one's own discretion".)]

Suggestions for better terminology area always appreciated (especially
if accompanied by a "rough consensus").

Yakov.

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