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Technical Configuration Guide for SNMP v2.0 December 2006
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NORTEL External Distribution
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TrustedHostUserName: none
AccessLevel: readWriteAll
AccessStrict: false
Usage: 385
• ERS-8610:5# show sys access-policy snmp-group-info
snmpv3-groups :
Policy 1 snmpv3-groups:
Group Name Snmp-Model
Policy 2 snmpv3-groups:
Group Name Snmp-Model
readgrp snmpv1
readgrp snmpv2c
v1v2grp snmpv1
v1v2grp snmpv2c
3.3.3 SNMP Community Strings
For security reasons, the SNMP agent validates each request from an SNMP manager before
responding to the request. This is accomplished by verifying that the manager belongs to a valid
SNMP community. An SNMP community is a logical relationship between an SNMP agent and
one or more SNMP managers (the manager software implements the protocols used to exchange
data with SNMP agents). You define communities locally at the agent.
The agent establishes one community for each combination of authentication and access control
characteristics that you choose. You assign each community a unique name (community string),
and all members of a community have the same access privileges, either read-only or read-write:
• Read-only: members can view configuration and performance information.
• Read-write: members can view configuration and performance information, and also
change the configuration.
By defining a community, an agent limits access to its MIB to a selected set of management
stations. By using more than one community, the agent can provide different levels of MIB access
to different management stations.
SNMP community strings are required for access to the switch using Device Manager or other
SNMP-based management software. You set the SNMP community strings using the CLI. If you
have read/write/all access authority, you can modify the SNMP community strings for access to
the device through Device Manager.
In the ERS 8000 Series switch software release 3.7, the CLI command save config creates a
hidden and encrypted file that contains the SNMP community table information. The SNMP
community strings are not referenced in the ERS 8600 configuration file. Please see publication
number 317177-A titled Release Notes for the ERS 8000 Series Switch Software Release 3.7 for
more details regarding upgrading SNMP to release 3.7.
Caution: For security reasons, Nortel Networks recommends that you set the passwords to
values other than the factory defaults.