Hi Dave, Good point, section 5.1 clearly states that "a null Object Identifier" should be encoded as four 0 bytes. From my point of view, the term "a null Object Identifier" refers to a zero length OID. Given that this is true, the encoding would be consistent with the actual value (both have a zero length).
Otherwise, if "a null Object Identifier" refers to the 0.0 (ccitt(0).zeroDotZero(0)) OID, then the actual length of the encoded value (two) would not match with the length field in the AgentX PDU (zero). This would be surprising and would represent an encoding exception. Should we forward this question to the AgentX mailing list? I am a bit confused, since a zero length OID would not make any sense in AgentX communication, but on the other hand I do not see how "null" corresponds to "zeroDotZero"? If you do not mind, I will forward our discussion to the AgentX mailing list. Cheers, Frank Dave Shield wrote: > On 14/02/07, Johnny Ljunggren <[EMAIL PROTECTED]> wrote: >> Just a follow up with the answer from Frank Fock: >> >> a 0.0 OID should be encoded like: >> 02 00 00 00 >> 00 00 00 00 >> 00 00 00 00 >> >> and not >> 00 00 00 00 >> >> which is actually a zero length OID > > Frank, > how do you interpret the last paragraph of > RFC 2741, section 5.1, which says: > > "A null Object Identifier consists of the > 4-byte header with all bytes set to 0." > ? > > I read this as meaning an encoding of > 00 00 00 00 > > Would you see things differently? > > Dave > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Net-snmp-users mailing list > [email protected] > Please see the following page to unsubscribe or change other options: > https://lists.sourceforge.net/lists/listinfo/net-snmp-users > -- AGENT++ http://www.agentpp.com http://www.mibexplorer.com http://www.mibdesigner.com ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
