RE: [dhcwg] Conflicting information regarding DHCP options 82 and 83.
"Kostur, Andre" <Andre@incognito.com> Wed, 09 October 2002 15:53 UTC
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From: "Kostur, Andre" <Andre@incognito.com>
To: 'Van Aken Dirk' <VanAkenD@thmulti.com>, "'dhcwg@ietf.org'" <dhcwg@ietf.org>
Cc: Dedecker Hans <DedeckerH@thmulti.com>, Dekeyser Miek <DekeyserM@thmulti.com>
Subject: RE: [dhcwg] Conflicting information regarding DHCP options 82 and 83.
Date: Wed, 09 Oct 2002 08:52:43 -0700
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I wonder if 83 was previously mentioned in a draft somewhere. However, RFC 3046 is authoritative on this matter, and option 82 is the one to look at. 82 currently has 2 defined sub-options (and I know of 2 or 3 more that are currently in draft) -----Original Message----- From: Van Aken Dirk [mailto:VanAkenD@thmulti.com] Sent: Monday, October 07, 2002 1:27 AM To: 'dhcwg@ietf.org' Cc: Dedecker Hans; Dekeyser Miek Subject: [dhcwg] Conflicting information regarding DHCP options 82 and 83. Hello DHCP Working Group, I have some conflicting information regarding the DHCP options defined below. i.e. On the IANA bootp-dhcp parameter list ( http://www.iana.org/assignments/bootp-dhcp-parameters ) I see the following options: 82 Agent Circuit ID N Agent Circuit ID 83 Agent Remote ID N Agent Remote ID On the other hand RFC3046 mentions the following": >>>> 2.0 Relay Agent Information Option This document defines a new DHCP Option called the Relay Agent Information Option. It is a "container" option for specific agent- supplied sub-options. The format of the Relay Agent Information option is: Code Len Agent Information Field +------+------+------+------+------+------+--...-+------+ | 82 | N | i1 | i2 | i3 | i4 | | iN | +------+------+------+------+------+------+--...-+------+ The length N gives the total number of octets in the Agent Information Field. The Agent Information field consists of a sequence of SubOpt/Length/Value tuples for each sub-option, encoded in the following manner: SubOpt Len Sub-option Value +------+------+------+------+------+------+--...-+------+ | 1 | N | s1 | s2 | s3 | s4 | | sN | +------+------+------+------+------+------+--...-+------+ SubOpt Len Sub-option Value +------+------+------+------+------+------+--...-+------+ | 2 | N | i1 | i2 | i3 | i4 | | iN | +------+------+------+------+------+------+--...-+------+ No "pad" sub-option is defined, and the Information field shall NOT be terminated with a 255 sub-option. The length N of the DHCP Agent Information Option shall include all bytes of the sub-option code/length/value tuples. Since at least one sub-option must be defined, the minimum Relay Agent Information length is two (2). The length N of the sub-options shall be the number of octets in only that sub-option's value field. A sub-option length may be zero. The sub-options need not appear in sub-option code order. The initial assignment of DHCP Relay Agent Sub-options is as follows: DHCP Agent Sub-Option Description Sub-option Code --------------- ---------------------- 1 Agent Circuit ID Sub-option 2 Agent Remote ID Sub-option >>>> So I wonder now if DHCP option 82 refers to the DHCP Relay Information option for which there are defined two sub-options (1: Agent Circuit ID Sub-option and 2: Agent Remote ID Sub-option"). Or do I misunderstand something here ? Thanks in advance - Dirk Dirk Van Aken THOMSON multimedia Broadband Belgium NV System Architect Prins Boudewijnlaan 47, Tel. : 03/443.65.08 2650 Edegem Fax.: 03/443.66.32 Belgium vanakend@thmulti.com _______________________________________________ dhcwg mailing list dhcwg@ietf.org https://www1.ietf.org/mailman/listinfo/dhcwg
- [dhcwg] Conflicting information regarding DHCP op… Van Aken Dirk
- RE: [dhcwg] Conflicting information regarding DHC… Kostur, Andre
- RE: [dhcwg] Conflicting information regarding DHC… Woundy, Richard
- RE: [dhcwg] Conflicting information regarding DHC… John Schnizlein
- RE: [dhcwg] Conflicting information regarding DHC… Bernie Volz (EUD)
- RE: [dhcwg] Conflicting information regarding DHC… Ralph Droms
- RE: [dhcwg] Conflicting information regarding DHC… Bernie Volz (EUD)