From agentx-bounces@ietf.org Mon Aug 08 01:21:15 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E204Z-0006jN-Dz; Mon, 08 Aug 2005 01:21:15 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E204T-0006iN-1S for agentx@megatron.ietf.org; Mon, 08 Aug 2005 01:21:09 -0400 Received: from ietf-mx.ietf.org (ietf-mx [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id BAA16876 for ; Mon, 8 Aug 2005 01:21:08 -0400 (EDT) Received: from web30408.mail.mud.yahoo.com ([68.142.200.111]) by ietf-mx.ietf.org with smtp (Exim 4.43) id 1E20c5-0003l8-Tj for agentx@ietf.org; Mon, 08 Aug 2005 01:55:55 -0400 Received: (qmail 10644 invoked by uid 60001); 8 Aug 2005 05:20:56 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=diWk8rMpai/bQxH8VGw+gLWQGrqkANNyAQvU8YJNk9m3pmM/qw8tSwYSoo+HC62sWBQVBc93MuU/2k0lxIw1ds4rNUhV6AKWh8taKmOnm4CIYTFlbS0MJwR9ENEzKCyYU9pyg/nsUYv6ptO1a5MjHFyXG0clj65vRAwnVqfKoaM= ; Message-ID: <20050808052056.10642.qmail@web30408.mail.mud.yahoo.com> Received: from [24.6.168.212] by web30408.mail.mud.yahoo.com via HTTP; Sun, 07 Aug 2005 22:20:56 PDT Date: Sun, 7 Aug 2005 22:20:56 -0700 (PDT) From: MEENA SELVAM To: agentx@ietf.org, MEENA SELVAM MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Spam-Score: 0.6 (/) X-Scan-Signature: 08170828343bcf1325e4a0fb4584481c Content-Transfer-Encoding: 8bit Cc: Subject: [Agentx] how to load a MIB in ireasoning browser as a non leaf node X-BeenThere: agentx@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SNMP Agent Extensibility List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: agentx-bounces@ietf.org Errors-To: agentx-bounces@ietf.org Hi, I was using ireasoning web browser, and initially it correctly loaded as a non leaf node. But after I made some changes to MIB, compiled and restarted the target, the mib browser loads it as a leaf of the RFC node. How can I fix this problem? My target is a linux machine meena __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com From agentx-bounces@ietf.org Tue Aug 16 19:24:58 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E5Ani-0000HV-8x; Tue, 16 Aug 2005 19:24:58 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E5Ang-0000HN-QR for agentx@megatron.ietf.org; Tue, 16 Aug 2005 19:24:56 -0400 Received: from ietf-mx.ietf.org (ietf-mx [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA20198 for ; Tue, 16 Aug 2005 19:24:49 -0400 (EDT) Received: from web30412.mail.mud.yahoo.com ([68.142.201.235]) by ietf-mx.ietf.org with smtp (Exim 4.43) id 1E5BN1-00024f-Mr for agentx@ietf.org; Tue, 16 Aug 2005 20:01:30 -0400 Received: (qmail 13438 invoked by uid 60001); 16 Aug 2005 23:24:39 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=BFmyty21QyGdImvC/yJNwq2x8fk3Bp1gVtbif9xaVeo/p2Lo3JmAHU07vwAcuwaH+72I+go/teqaLj/Qxz0lkYpNXTgst1IOhuUkxwhCD7TAr+2aY4oHQkiJJArkJnPhs2vzd9rk73wL8UyIFc2tkpMG1WDtmK5MZ54Ppax1MZ8= ; Message-ID: <20050816232439.13436.qmail@web30412.mail.mud.yahoo.com> Received: from [47.230.0.41] by web30412.mail.mud.yahoo.com via HTTP; Tue, 16 Aug 2005 16:24:39 PDT Date: Tue, 16 Aug 2005 16:24:39 -0700 (PDT) From: MEENA SELVAM To: agentx@ietf.org MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Spam-Score: 0.5 (/) X-Scan-Signature: 67c1ea29f88502ef6a32ccec927970f0 Content-Transfer-Encoding: 8bit Subject: [Agentx] getnext of empty table accesses the key of next table; any suggestions X-BeenThere: agentx@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SNMP Agent Extensibility List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: agentx-bounces@ietf.org Errors-To: agentx-bounces@ietf.org Hi, I have few tables in snmp module, and when I issue a get_next using a mib browser for an empty table, since endOfTable is returned, it continues to look for the next available instance of the next variable/table. This is according to (conforming to ) the documentation given below from www.erlang.se/doc/doc-5.0.1/lib/snmp-3.2.1/doc/ under instrumentation functions section. ===================================================== 3.1.6 GetNext Operation The GetNext Operation operation should only be defined for tables since the agent can find the next instance of plain variables in the MIB and call the instrumentation with the get operation. table_access(get_next, RowIndex, Cols [, ExtraArg1, ...]) Cols is a list of integers, all greater than or equal to zero. This indicates that the instrumentation should find the next accessible instance. This function returns the tuple {NextOid, NextValue}, or endOfTable. NextOid should be the lexicographically next accessible instance of a managed object in the table. It should be a list of integers, where the first integer is the column, and the rest of the list is the indices for the next row. If endOfTable is returned, the agent continues to search for the next instance among the other variables and tables. RowIndex may be an empty list, an incompletely specified row index, or the index for an unspecified row. ====================================================== But, in finding the next instance the program tries to access the key ie Colno corresponding to key is part of this search. In my case, the get_next of the switch table works fine normally but in the normal case, the keys are inaccessible, and hence getnext (even as part of walk) specifies columns 3-7 and never 1 and 2 The error I get is: [Note this is in erlang language] ** User error: Invalid return value {'EXIT',{{badma tch,{aborted,{function_clause,[{oam_snmp_snas,get_switch_table,[1,{'1','1'}]},{o am_snmp_table,nselect_cols,6},{reg,'-transaction/3-fun-0-',3},{reg,'-transaction /3-fun-1-',1},{mnesia_tm,apply_fun,3},{mnesia_tm,execute_transaction,5},{oam_snm p_snas,snasSwitchDetailTable,3},{snmpa_agent,get_next_values_all_rows,6}]}}},[{o am_snmp_snas,snasSwitchDetailTable,3},{snmpa_agent,get_next_values_all_rows,6},{ snmpa_agent,get_next_table,4},{snmpa_agent,next_loop_varbinds,5},{snmpa_agent,pr ocess_pdu,4},{snmpa_agent,handle_pdu,7},{snmpa_agent,handle_info,2},{gen_server, handle_msg,6}]}} from {oam_snmp_snas,snasSwitchDetailTable,[]} (get_next) my get_switch_table is the access function which is defined below: The first parameter is col no. get_switch_table(?snasSwitchIp, {XId, SId}) -> {value, SwitchIp} = reg:value_t(?SwitchIp(XId,SId)), tuple_to_list(SwitchIp); the problem is due to the col value 1 (first parameter of the following function call). This is confirmed because, just typing at erlang shell as follows: oam_snmp_snas:get_switch_table(1,{'1','1'}). gives the following error, =ERROR REPORT==== 16-Aug-2005::10:25:42 === Error in process <0.1043.0> on node ' isd@a47-80-18-92' with exit value: {function_clause,[{oam_snmp_snas,get_switch_t able,[1,{'1','1'}]},{erl_eval,do_apply,5},{shell,exprs,6},{shell,eval_loop,3}]} * * exited: {function_clause,[{oam_snmp_snas,get_switch_table,[1,{'1','1'}]}, {erl_eval,do_apply,5}, {shell,exprs,6}, {shell,eval_loop,3}]} ** whereas oam_snmp_snas:get_switch_table(3,{'1','1'}). does not give error(produces proper output) My doubt is: why does the next searched instance is the key(col 1), instead of column 3. Also is it possible to suppress searching beyond for next available instance if endOfTable is encountered. meena ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs From agentx-bounces@ietf.org Tue Aug 16 19:57:37 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E5BJJ-0007xV-Og; Tue, 16 Aug 2005 19:57:37 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1E5BJI-0007xQ-Jr for agentx@megatron.ietf.org; Tue, 16 Aug 2005 19:57:36 -0400 Received: from ietf-mx.ietf.org (ietf-mx [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA25169 for ; Tue, 16 Aug 2005 19:57:34 -0400 (EDT) Received: from pop-altamira.atl.sa.earthlink.net ([207.69.195.62]) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1E5Bsh-0003JE-QM for agentx@ietf.org; Tue, 16 Aug 2005 20:34:13 -0400 Received: from h-68-165-6-190.snvacaid.dynamic.covad.net ([68.165.6.190] helo=oemcomputer) by pop-altamira.atl.sa.earthlink.net with smtp (Exim 3.36 #10) id 1E5BJF-0001H7-00 for agentx@ietf.org; Tue, 16 Aug 2005 19:57:33 -0400 Message-ID: <037d01c5a2be$75b96f20$7f1afea9@oemcomputer> From: "Randy Presuhn" To: References: <20050816232439.13436.qmail@web30412.mail.mud.yahoo.com> Subject: Re: [Agentx] getnext of empty table accesses the key of next table; any suggestions Date: Tue, 16 Aug 2005 16:58:54 -0700 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1478 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1478 X-Spam-Score: 0.1 (/) X-Scan-Signature: 9ed51c9d1356100bce94f1ae4ec616a9 X-BeenThere: agentx@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SNMP Agent Extensibility List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: agentx-bounces@ietf.org Errors-To: agentx-bounces@ietf.org Hi - > From: "MEENA SELVAM" > To: > Sent: Tuesday, August 16, 2005 4:24 PM > Subject: [Agentx] getnext of empty table accesses the key of next table;any suggestions > > Hi, > > I have few tables in snmp module, and when I issue a > get_next using a mib browser for an empty table, since > endOfTable is returned, it continues to look for the > next available instance of the next variable/table. This is what it should happen at the agentx protocol level. > This is according to (conforming to ) the > documentation given below from > www.erlang.se/doc/doc-5.0.1/lib/snmp-3.2.1/doc/ > under instrumentation functions section. We really shouldn't be discussing specific products here. ... > My doubt is: why does the next searched instance is > the key(col 1), instead of column 3. This question is highly specific to that particular API, so I'd be surprised if you got an answer here. > Also is it possible to suppress searching beyond for > next available instance if endOfTable is encountered. ... That, too, is API specific, but it seems that if you wanted agentx protocol to function correctly, it should indeed look for the next available instance. (Think about table rows with holes in them to understand why.) Randy