Comments on: Changing SNMP Community Strings http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/ technical blog around technology, networking solutions and IP telephony Fri, 12 Mar 2010 16:19:34 -0500 http://wordpress.org/?v=2.9.2 hourly 1 By: Gbenga http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1417 Gbenga Thu, 05 Nov 2009 23:08:02 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1417 Thank you so much for all the input.. CLImanager definitely dummies it up..I tested okay with telnet however I seem to be running into issues with ssh enabled switches. It logins okay but then I am not at the proper prompt.. when I attempt to type anything it comes back with " invalid timeout value" error. Thank you so much for all the input.. CLImanager definitely dummies it up..I tested okay with telnet however I seem to be running into issues with ssh enabled switches. It logins okay but then I am not at the proper prompt.. when I attempt to type anything it comes back with ” invalid timeout value” error.

]]> By: IanNorm http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1415 IanNorm Wed, 04 Nov 2009 18:25:31 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1415 I know Brett as well - I worked at Nortel for 10 years working on management solutions for MSS (aka Passport) 6K, 7K, 15K switches. If anyone ever needs any help with MDM give me a shout! So, yes, I've been using CLImanager extensively for many years - batch files, CLI*Script files, Java plugins, etc. If anyone needs any help with CLImanager let me know. I know Brett as well – I worked at Nortel for 10 years working on management solutions for MSS (aka Passport) 6K, 7K, 15K switches. If anyone ever needs any help with MDM give me a shout! So, yes, I’ve been using CLImanager extensively for many years – batch files, CLI*Script files, Java plugins, etc. If anyone needs any help with CLImanager let me know.

]]> By: Michael McNamara http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1403 Michael McNamara Tue, 03 Nov 2009 05:35:28 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1403 Hi IanNorm, You've stumbled onto a gem with CLImanager. When we had Nortel Passport 6480/7480 ATM switches we used CLImanager to help manage them. I haven't used CLImanager recently but it could certainly accomplished the task (I'm not sure how many switches it could configure at once). I've personally just become accustom to writing Expect scripts on a CentOS Linux server. For anyone that's not familiar with Except, then CLImanager might be a nice alternative. You actually don't need to even script anything. CLImanager will literally login to multiple switches at one time, you issue a single command and it will pass that command on to every switch that you are logged into, pretty neat stuff. I know the author of CLImanager, Brett Sinclair, and he's a very sharp fellow. Cheers! Hi IanNorm,

You’ve stumbled onto a gem with CLImanager. When we had Nortel Passport 6480/7480 ATM switches we used CLImanager to help manage them. I haven’t used CLImanager recently but it could certainly accomplished the task (I’m not sure how many switches it could configure at once). I’ve personally just become accustom to writing Expect scripts on a CentOS Linux server. For anyone that’s not familiar with Except, then CLImanager might be a nice alternative. You actually don’t need to even script anything. CLImanager will literally login to multiple switches at one time, you issue a single command and it will pass that command on to every switch that you are logged into, pretty neat stuff. I know the author of CLImanager, Brett Sinclair, and he’s a very sharp fellow.

Cheers!

]]> By: IanNorm http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1401 IanNorm Mon, 02 Nov 2009 13:33:20 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1401 Have you used CLImanager (freebie from Nortel - https://app23.nortelnetworks.com/climanager/)? It is easy to connect to multiple devices and issue the commands to all connected devices. Or put the commands in a script and run it against a list of devices. Let me know if you need any more info. Ian Have you used CLImanager (freebie from Nortel – https://app23.nortelnetworks.com/climanager/)? It is easy to connect to multiple devices and issue the commands to all connected devices. Or put the commands in a script and run it against a list of devices.

Let me know if you need any more info.

Ian

]]> By: Michael McNamara http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1387 Michael McNamara Wed, 28 Oct 2009 03:12:43 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1387 Let me dig up a sample Expect script and post it here... Here's an Expect script that will configure the Daylight Saving Time on the Nortel 460,470,2500,4500,5500,5600 switches. You can easily adopt this script to reset the SNMP community strings as oppose to reconfiguring the date/time. Expect Script: <a href="http://www.michaelfmcnamara.com/files/scripts/set-nortel-timezone.exp.txt" rel="nofollow">set-nortel-timezone.exp.txt</a> Bash Script that calls Expect script: <a href="http://www.michaelfmcnamara.com/files/scripts/set-nortel-timezone.sh.txt" rel="nofollow">set-nortel-timezone.sh.txt</a>. You can read more about it in this post; <a href="http://blog.michaelfmcnamara.com/2008/07/expect-script-daylight-saving-time/" rel="nofollow">http://blog.michaelfmcnamara.com/2008/07/expect-script-daylight-saving-time</a>. Cheers! Let me dig up a sample Expect script and post it here…

Here’s an Expect script that will configure the Daylight Saving Time on the Nortel 460,470,2500,4500,5500,5600 switches. You can easily adopt this script to reset the SNMP community strings as oppose to reconfiguring the date/time.

Expect Script: set-nortel-timezone.exp.txt

Bash Script that calls Expect script: set-nortel-timezone.sh.txt.

You can read more about it in this post; http://blog.michaelfmcnamara.com/2008/07/expect-script-daylight-saving-time.

Cheers!

]]> By: Gbenga http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1383 Gbenga Tue, 27 Oct 2009 13:52:02 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1383 Hi Michael, Thank you for your response. I am not familiar with Linux but I can always figure it out... It's the least I can do. I will be glad to have the examples you talk about using Expect. I presume this will work with ssh too because all these devices have telnet disabled. Regards, Hi Michael,
Thank you for your response. I am not familiar with Linux but I can always figure it out… It’s the least I can do. I will be glad to have the examples you talk about using Expect. I presume this will work with ssh too because all these devices have telnet disabled.

Regards,

]]> By: Michael McNamara http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1380 Michael McNamara Tue, 27 Oct 2009 12:55:50 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1380 Hi Gbenga, I've written a few Expect scripts that essentially telnet into the switches and then issue the appropriate CLI commands. If you are familiar with Linux I could provide you a few examples. Cheers! Hi Gbenga,

I’ve written a few Expect scripts that essentially telnet into the switches and then issue the appropriate CLI commands.

If you are familiar with Linux I could provide you a few examples.

Cheers!

]]> By: Gbenga http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1377 Gbenga Mon, 26 Oct 2009 19:40:43 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1377 Hi Michael, Very informative blog you have.... I'd like to be able to change snmp strings for quite a number of ES470s and ERS8600s. Do you have a script or tool you have used in the past to accomplish the same ? Thank you for your time. Hi Michael,

Very informative blog you have…. I’d like to be able to change snmp strings for quite a number of ES470s and ERS8600s. Do you have a script or tool you have used in the past to accomplish the same ?

Thank you for your time.

]]> By: Michael McNamara http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1370 Michael McNamara Fri, 23 Oct 2009 03:10:25 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1370 Hi Tom, While I won't disagree with you, I'm not surethere's an absolute need for SNMP v3 within a private corporate network. It's roughly akin to using SSH as opposed to telnet for remote CLI access. I'd be happy with people just changing the default SNMP community strings. In any case I hope to cover how to configure SNMP v3 in the next post and then SSH in subsequent posts. Thanks for the comment! Hi Tom,

While I won’t disagree with you, I’m not surethere’s an absolute need for SNMP v3 within a private corporate network. It’s roughly akin to using SSH as opposed to telnet for remote CLI access. I’d be happy with people just changing the default SNMP community strings.

In any case I hope to cover how to configure SNMP v3 in the next post and then SSH in subsequent posts.

Thanks for the comment!

]]> By: Tom http://blog.michaelfmcnamara.com/2009/10/changing-snmp-community-strings/#comment-1369 Tom Fri, 23 Oct 2009 02:56:48 +0000 http://blog.michaelfmcnamara.com/?p=1055#comment-1369 A suggestion that folks consider moving to SNMP v3. It's not that hard to setup and will provide end-to-end encryption between DM and the device. A suggestion that folks consider moving to SNMP v3. It’s not that hard to setup and will provide end-to-end encryption between DM and the device.

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