Cisco Systems 78-16845-01 manual Setting Up Nonstandard Community Strings, 3-15

Chapter 3 Building the Network

3.5.1 Prerequisites for Adding NEs

To configure the SNMP community string, you must change the community strings on the devices through the CLI.

Table 3-6describes the various options involved in configuring SNMP.

Table 3-6	SNMP Configuration Options
Option		Description
Domain Explorer,		After saving the community strings information, the CTM processes use the new community strings
Network Element		for SNMP accesses.
Properties pane, NE		Since users must configure the community strings on both the devices through CLI, and at the CTM
Authentication tab
		stations through the Domain Explorer, there is a possibility of typing in mismatched community
		strings. This results in the node with the mismatched community strings becoming either not
		discovered or unreachable to CTM.
		Note Configured community strings cannot contain underscore (_) or ampersand (@) characters.
		Also, spaces are not allowed in community strings and service-level passwords.
SNMP access security		Enter the cnfsnmp command on CTM by using a secured shell to change the community strings and
		passwords.

3.5.1.8.2 Setting Up Nonstandard Community Strings

The standard community strings are defined as default community strings. If you change the standard (default) community strings to a different value, the standard community strings become nonstandard.

To set up nonstandard community strings or to change a service-level password, use the NE

Authentication tab in the Domain Explorer.

Note This method affects only CTM. You must make sure that community strings and passwords within CTM match those on the switches.

3.5.1.8.3 Changing Community Strings Using the Domain Explorer

To change the SNMP get and set community strings for selected nodes:

Step 1 In the Domain Explorer Hierarchy pane, select the node.

Step 2 In the NE Authentication tab, you can change the SNMP Community String to change the SNMP get community string, or change the SNMP Set Only Community String.

Step 3 Click Save.

3.5.1.8.4 Changing Community Strings Using the CLI

To change the SNMP get community strings for selected nodes:

Step 1 Open a terminal window and SSH or Telnet to the switch.

Step 2 Enter the cnfsnmp command to change the SNMP get community string for the selected nodes as follows:

xxyyzz% cnfsnmp community [rorw]

Cisco Transport Manager Release 6.0 User Guide

78-16845-01 3-15