Re: [Idr] BGP: Vendor Specific Capabilities
<sundeep.mudgal@nokia.com> Tue, 22 April 2008 18:48 UTC
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Thread-topic: [Idr] BGP: Vendor Specific Capabilities
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From: sundeep.mudgal@nokia.com
To: jgs@bgp.nu
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Subject: Re: [Idr] BGP: Vendor Specific Capabilities
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So when you say "ignore", does it mean that peer continues with the connection or drop the connection without sending any notification? -----Original Message----- From: ext John G. Scudder [mailto:jgs@bgp.nu] Sent: Tue 4/22/2008 12:59 PM To: Mudgal Sundeep (Nokia-S&S/MtView) Cc: idr@ietf.org Subject: Re: [Idr] BGP: Vendor Specific Capabilities It should be ignored. Per RFC 3392, the unsupported capability message is a way to complain if your peer doesn't support a capability that you insist on having support for. An example would be if the peer doesn't support MP-BGP and you are trying to establish a v6 peering. Here is the pertinent text from RFC 3392: "If a BGP speaker that supports a certain capability determines that its peer doesn't support this capability, the speaker MAY send a NOTIFICATION message to the peer, and terminate peering (see Section "Extensions to Error Handling" for more details). The Error Subcode in the message is set to Unsupported Capability. The message SHOULD contain the capability (capabilities) that causes the speaker to send the message. The decision to send the message and terminate peering is local to the speaker. If terminated, such peering SHOULD NOT be re- established automatically." I apologize for the confusing name of the notification message. Probably something like "Required Capability Missing" would have been better. :-( Correct behavior with respect to any unknown capability from your peer (whether vendor-specific or otherwise) is generally to ignore it. --John On Apr 22, 2008, at 11:35 AM, <sundeep.mudgal@nokia.com> <sundeep.mudgal@nokia.com > wrote: > > Hi, > > Could you please confirm whether vendor-specific > capabilities should be ignored or responded to with the unsupported > capability message? > > Thanks, > Sandeep Mudgal > > _______________________________________________ > Idr mailing list > Idr@ietf.org > https://www.ietf.org/mailman/listinfo/idr
_______________________________________________ Idr mailing list Idr@ietf.org https://www.ietf.org/mailman/listinfo/idr
- [Idr] BGP: Vendor Specific Capabilities sundeep.mudgal
- Re: [Idr] BGP: Vendor Specific Capabilities Kalpesh Zinjuwadia
- Re: [Idr] BGP: Vendor Specific Capabilities Neil Matthew
- Re: [Idr] BGP: Vendor Specific Capabilities John G. Scudder
- Re: [Idr] BGP: Vendor Specific Capabilities sundeep.mudgal
- Re: [Idr] BGP: Vendor Specific Capabilities John G. Scudder
- Re: [Idr] BGP: Vendor Specific Capabilities sundeep.mudgal
- Re: [Idr] BGP: Vendor Specific Capabilities John G. Scudder