From owner-agentx@dorothy.bmc.com Tue Sep 4 01:08:26 2001 Received: from babbler.bmc.com (firebird.bmc.com [198.207.223.228]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id BAA20309 for ; Tue, 4 Sep 2001 01:08:26 -0400 (EDT) Received: from dorothy.bmc.com (localhost [127.0.0.1]) by babbler.bmc.com (8.10.2/8.10.2) with ESMTP id f8459fV12314; Tue, 4 Sep 2001 00:09:42 -0500 (CDT) Received: (from root@localhost) by dorothy.bmc.com (8.8.6 (PHNE_12836)/8.8.6) id WAA29445 for agentx-list; Mon, 3 Sep 2001 22:02:56 -0700 (PDT) Received: (from rpresuhn@localhost) by dorothy.bmc.com (8.8.6 (PHNE_12836)/8.8.6) id WAA29439; Mon, 3 Sep 2001 22:02:52 -0700 (PDT) Date: Mon, 3 Sep 2001 22:02:52 -0700 (PDT) From: Randy Presuhn Message-Id: <200109040502.WAA29439@dorothy.bmc.com> To: agentx@dorothy.bmc.com Subject: Fwd: PDU type Cc: jnatale@sitaranetworks.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-agentx@dorothy.bmc.com Precedence: bulk List-Id: IETF Agentx Working Group mailing list Content-Transfer-Encoding: 7bit Hi - I'm forwarding a non-subscriber posting to the agentx WG mailing list. Subscription instructions are at http://www.ietf.org/html.charters/agentx-charter.html ------------------------------------------------------ Randy Presuhn BMC Software, Inc. 1-3141 randy_presuhn@bmc.com 2141 North First Street Tel: +1 408 546-1006 San José, California 95131 USA ------------------------------------------------------ My opinions and BMC's are independent variables. ------------------------------------------------------ > Received: from tattler.bmc.com (tattler.bmc.com [172.17.0.117]) > by dorothy.bmc.com (8.8.6 (PHNE_12836)/8.8.6) with ESMTP id QAA00330 > for ; Sat, 1 Sep 2001 16:30:40 -0700 (PDT) > Received: from mx-us-hou-1-int.bmc.com (localhost [127.0.0.1]) > by tattler.bmc.com (8.10.2/8.10.2) with ESMTP id f81NUZ716612 > for ; Sat, 1 Sep 2001 18:30:35 -0500 (CDT) > Received: from rios.sitaranetworks.com (rios.sitaranetworks.com [199.103.141.78]) > by mx-us-hou-1-int.bmc.com (Postfix) with SMTP id 9199A1FF002 > for ; Sat, 1 Sep 2001 23:22:33 -0500 (CDT) > Received: by rios.sitaranetworks.com with Internet Mail Service (5.5.2653.19) > id ; Sat, 1 Sep 2001 19:32:04 -0400 > Message-ID: <31269226357BD211979E00A0C9866DAB02AA84FD@rios.sitaranetworks.com> > From: Jonathan Natale > To: "'agentx@dorothy.bmc.com'" > Subject: PDU type > Date: Sat, 1 Sep 2001 19:31:58 -0400 > MIME-Version: 1.0 > X-Mailer: Internet Mail Service (5.5.2653.19) > Content-Type: text/plain; > charset="iso-8859-1" > > why is the pdu type "a1", "a2", "a3", "a4", or "a5" on a Sniffer, BUT all > docs (for example "TCP/IP Illustrated Volume 1" -W.R.Stevens. Fig. 25.3, > p.362) indicate it is "1", "2", "3", "4", or "5" ??? > From owner-agentx@dorothy.bmc.com Tue Sep 4 02:09:10 2001 Received: from babbler.bmc.com (camaro.bmc.com [198.207.223.231]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA04249 for ; Tue, 4 Sep 2001 02:09:09 -0400 (EDT) Received: from dorothy.bmc.com (localhost [127.0.0.1]) by babbler.bmc.com (8.10.2/8.10.2) with ESMTP id f846B4o17150; Tue, 4 Sep 2001 01:11:04 -0500 (CDT) Received: (from root@localhost) by dorothy.bmc.com (8.8.6 (PHNE_12836)/8.8.6) id XAA00716 for agentx-list; Mon, 3 Sep 2001 23:07:39 -0700 (PDT) Received: from tattler.bmc.com (tattler.bmc.com [172.17.0.117]) by dorothy.bmc.com (8.8.6 (PHNE_12836)/8.8.6) with ESMTP id XAA00711 for ; Mon, 3 Sep 2001 23:07:35 -0700 (PDT) Received: from mx-us-hou-1-int.bmc.com (localhost [127.0.0.1]) by tattler.bmc.com (8.10.2/8.10.2) with ESMTP id f8467SG02518 for ; Tue, 4 Sep 2001 01:07:28 -0500 (CDT) Received: from ihemail1.firewall.lucent.com (unknown [192.11.222.161]) by mx-us-hou-1-int.bmc.com (Postfix) with SMTP id 45A6320EFC5 for ; Tue, 4 Sep 2001 05:56:45 -0500 (CDT) Received: from md6370exch001p.wins.lucent.com (h135-114-206-50.lucent.com [135.114.206.50]) by ihemail1.firewall.lucent.com (Switch-2.1.3/Switch-2.1.0) with ESMTP id f8468ix09527 for ; Tue, 4 Sep 2001 02:08:44 -0400 (EDT) Received: by md6370exch001p.nse.lucent.com with Internet Mail Service (5.5.2650.21) id ; Tue, 4 Sep 2001 02:08:29 -0400 Message-ID: From: "Natale, Robert C (Bob)" To: jnatale@sitaranetworks.com Cc: agentx@dorothy.bmc.com Subject: RE: PDU type Date: Tue, 4 Sep 2001 02:08:25 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain Sender: owner-agentx@dorothy.bmc.com Precedence: bulk List-Id: IETF Agentx Working Group mailing list > > From: Jonathan Natale > > Date: Sat, 1 Sep 2001 19:31:58 -0400 Hi Jonathan, > > why is the pdu type "a1", "a2", "a3", "a4", or "a5" on a > > Sniffer, BUT all docs (for example "TCP/IP Illustrated Volume 1" > > -W.R.Stevens. Fig. 25.3, p.362) indicate it is "1", "2", "3", > > "4", or "5" ??? The Sniffer dump is showing you the ASN.1/BER-encoded value of the corresponding application-level value. In most SNMP development environments you will find a header file that defines the PDU types in a manner similar to this (from the standard v3 winsnmp.h file at www.winsnmp.com): #define SNMP_PDU_GET (ASN_CONTEXT | ASN_CONSTRUCTOR | 0x0) Where previously in that header file (or a prior one) the following defines (among others of this nature) would have been given to define the PDU construct itself: #define ASN_CONTEXT (0x80) #define ASN_CONSTRUCTOR (0x20) So, in the case of the Get PDU, this equates to 0x100 (160 decimal) which yields a binary value of 10100000, which yields the nibbles values of "a0"...and so forth. Left me know if that is not clear or seems otherwise problematic to you. Thanks, BobN