Requesting to change System description for Cisco switch

[csco11235857]

Hello,

I have a problem between Cisco switch with Nutanix SNMP Connection. Nutanix Techs told me, I need to change the System description for Cisco switch because Nutanix can't read the switch as it right now.

How could I change the switch system description ???

The system description for the switch is :

Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.2(5)E1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2016 by Cisco Systems, Inc. Compiled Wed 23-Nov-16 00:21 by prod_rel_team

[Richard Burts]

It is not clear what they want you to change. It appears that they are involved in using SNMP so it would be logical that they want you to change something in SNMP about the switch. What you have posted appears to be from the bootup process or from show version. I doubt that is what they really want changed. Perhaps you can get them to be more specific about what they want you to change?

HTH

Rick

[csco11235857]

They want to remove “No” which mentioned in [ Wed 23-Nov-16 00:21 by prod_rel_team ]

[Richard Burts]

That is interesting (and not what I expected). So perhaps I need to ask where (or how) you got the description that you posted.

And while I am thinking about it could you post the output of the following commands

show run | include snmp

show run | include SNMP

HTH

Rick

[csco11235857]

ONATTDMZSW01#show run | include snmp
snmp-server engineID remote 192.168.98.33 800000090300BCF1F29E7481
snmp-server group exppublic v3 priv read readview write writeview notify notifyview
snmp-server view readview internet included
snmp-server view writeview internet included
snmp-server view notifyview internet included
snmp-server community exppublic RO
snmp-server location Expertech Inc.
snmp-server contact Network Services 416-213-6500
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps transceiver all
snmp-server enable traps call-home message-send-fail server-fail
snmp-server enable traps tty
snmp-server enable traps license
snmp-server enable traps auth-framework sec-violation
snmp-server enable traps cluster
snmp-server enable traps config-copy
snmp-server enable traps config
snmp-server enable traps config-ctid
snmp-server enable traps trustsec-sxp conn-srcaddr-err msg-parse-err conn-config-err binding-err conn-up conn-down binding-expn-fail oper-nodeid-change binding-conflict
snmp-server enable traps energywise
snmp-server enable traps fru-ctrl
snmp-server enable traps entity
snmp-server enable traps event-manager
snmp-server enable traps ike policy add
snmp-server enable traps ike policy delete
snmp-server enable traps ike tunnel start
snmp-server enable traps ike tunnel stop
snmp-server enable traps ipsec cryptomap add
snmp-server enable traps ipsec cryptomap delete
snmp-server enable traps ipsec cryptomap attach
snmp-server enable traps ipsec cryptomap detach
snmp-server enable traps ipsec tunnel start
snmp-server enable traps ipsec tunnel stop
snmp-server enable traps ipsec too-many-sas
snmp-server enable traps power-ethernet police
snmp-server enable traps cpu threshold
snmp-server enable traps vstack
snmp-server enable traps bridge newroot topologychange
snmp-server enable traps stpx inconsistency root-inconsistency loop-inconsistency
snmp-server enable traps syslog
snmp-server enable traps vtp
snmp-server enable traps vlancreate
snmp-server enable traps vlandelete
snmp-server enable traps flash insertion removal
snmp-server enable traps port-security
snmp-server enable traps envmon fan shutdown supply temperature status
snmp-server enable traps stackwise
snmp-server enable traps bulkstat collection transfer
snmp-server enable traps errdisable
snmp-server enable traps mac-notification change move threshold
snmp-server enable traps vlan-membership
snmp-server host 192.168.46.2 informs version 3 priv admin
snmp-server host 192.168.98.33 informs version 3 priv admin
snmp-server host 10.10.10.10 version 3 priv admin
snmp-server host 10.10.10.11 version 3 priv admin
snmp-server host 10.10.10.12 version 3 priv admin
snmp-server host 10.10.10.13 version 3 priv admin
snmp-server host 10.10.10.14 version 3 priv admin
snmp-server host 10.10.10.15 version 3 priv admin
snmp-server host 192.168.46.2 version 3 priv admin
snmp-server host 192.168.98.33 version 3 priv admin

I got this description from the monitoring tools (192.168.98.33)

[Richard Burts]

Thank you for the additional information. The description that you posted does not show up in any of the SNMP commands. If the description had been in any of the commands it would have been easy to change. But it is not.

It is helpful to know that you got the description from the monitoring tool. And it is clear that the monitoring tool was reporting information related to the specific version of code that the switch is running. This is not something that you can change directly. But if it is important to change this bit of data then you can upgrade the version of code that the switch is running and get a version of code that was not compiled in November.

HTH

Rick

[Joseph W. Doherty]

. . . you can upgrade the version of code that the switch is running and get a version of code that was not compiled in November.

Excellent suggestion.

Another way this might be changed, although Rick's suggestion is much better, might be to decompress the binary and hex edit the image to replace the Nov with other characters.  I believe a decompressed binary can be run directly.  However, if Cisco does any bin image validation, when the image is loaded, this approach will fail.  Also, if it does work, be prepared to store a binary image about twice the size it now is.

[Richard Burts]

Decompress and hex edit is a very creative solution. But I am not optimistic that it would work. Changing characters in the object file would change the file hash. And I believe that most recent Cisco equipment does a file integrity check as it starts the boot process.

HTH

Rick

[Joseph W. Doherty]

You might find sysdesc cannot be changed on a Cisco switch.