Re: [Idr] Fwd: New Version Notification for draft-scudder-idr-rfc3392-bis-
"John G. Scudder" <jgs@juniper.net> Thu, 01 May 2008 14:52 UTC
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From: "John G. Scudder" <jgs@juniper.net>
To: Paul Jakma <paul@clubi.ie>
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Cc: Yakov Rekhter <yakov@juniper.net>, idr@ietf.org
Subject: Re: [Idr] Fwd: New Version Notification for draft-scudder-idr-rfc3392-bis-
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Hi Paul, The paragraph actually refers to the "Capabilities Optional Parameter" itself within the OPEN message, i.e. OPEN parameter type 2. RFC 4271 and its predecessors don't fully specify the handling of OPEN optional parameters, and in specific are silent as to whether a given OPEN optional parameter can appear more than once, so Enke's suggestion amounts to doing that here, which seems reasonable under the circumstances. Here's a revised paragraph, see if it's clearer: The Capabilities Optional Parameter (OPEN parameter type 2) SHOULD only be included in the OPEN message once. If the BGP speaker wishes to include multiple capabilities in the OPEN message, it SHOULD do so as discussed above, by listing all those capabilities as TLVs within a single Capabilities Optional Parameter. However, for backward compatibility a BGP speaker MUST be prepared to receive an OPEN message which contains multiple Capabilities Optional Parameters, each of which contains one or more capabilities TLVs. The set of capabilities should be processed the same in either case, whether it is enumerated within a single Capabilities Optional Parameter of the OPEN message, or split across multiple. Thanks for the feedback! --John On May 1, 2008, at 6:51 AM, Paul Jakma wrote: > Hi John, > > Could it be made slightly clearer that it means the same parameter > type? (Yeah, seems obvious once you think about it, but it could > perhaps make a difference to tired readers :) ). E.g. something like: > > On Wed, 30 Apr 2008, John G. Scudder wrote: > >> Enke, >> >> Would adding this paragraph at the end of section 4 cover your point? >> >> The Capabilities Optional Parameter SHOULD only be included in the >> OPEN message once. If the BGP speaker wishes to include multiple >> capabilities in the OPEN message, it SHOULD do so as discussed >> above, >> by listing all those capabilities within the same Capabilities >> Optional Parameter. However, for backward compatibility a BGP >> speaker MUST be prepared to receive an OPEN message which contains >> multiple Capabilities Optional Parameters, each of which contains >> one > ^ > for a given type > > >> or more capabilities. The set of capabilities should be processed >> the same in either case, whether the it is listed within a single >> Capabilities Optional Parameter, or within multiple. > ^ > , for a given type > > regards, > -- > Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A _______________________________________________ Idr mailing list Idr@ietf.org https://www.ietf.org/mailman/listinfo/idr
- [Idr] Fwd: New Version Notification for draft-scu… Yakov Rekhter
- Re: [Idr] Fwd: New Version Notification for draft… Danny McPherson
- Re: [Idr] Fwd: New Version Notification for draft… Enke Chen
- Re: [Idr] Fwd: New Version Notification for draft… John G. Scudder
- Re: [Idr] Fwd: New Version Notification for draft… John G. Scudder
- Re: [Idr] Fwd: New Version Notification for draft… Enke Chen
- Re: [Idr] Fwd: New Version Notification for draft… Paul Jakma
- Re: [Idr] Fwd: New Version Notification for draft… John G. Scudder
- Re: [Idr] Fwd: New Version Notification for draft… Jeffrey Haas
- Re: [Idr] Fwd: New Version Notification for draft… Jeffrey Haas
- Re: [Idr] Fwd: New Version Notification for draft… Brian Dickson
- Re: [Idr] Fwd: New Version Notification fordraft-… Rajiv Asati (rajiva)
- Re: [Idr] Fwd: New Version Notification fordraft-… John G. Scudder