Reviewing SNMP Statistics
Enterasys C3 Configuration Guide 12-3
Using SNMP Contexts to Access Specific MIBs
By default, when operating from the switch CLI, Enterasys C3 devices allow access to all SNMP
MIBs or contexts. A context is a collection of MIB objects, often associated with a particular
physical or logical device.
If no optional context parameters are configured for v1 and v2 “community” names and v3 “user”
groups, these groups are able to access all SNMP MIB objects when in switch mode.
Specifying a context parameter when setting up SNMP user group would permit or restrict the
group’s switch management access to the MIB(s) specified by the context (MIB object ID) value.
All SNMP contexts known to the device can be displayed using the show snmp context command
as described in “show snmp context” on page 12-20.
Example
This example permits the “powergroup” to manage all MIBs via SNMPv3:
C3(su)->set snmp access powergroup security-model usm
Configuration Considerations
Commands for configuring SNMP on the Enterasys C3 device are independent during the SNMP
setup process. For instance, target parameters can be specified when setting up optional
notification filters — even though these parameters have not yet been created with the set snmp
targetparams command.
Reviewing SNMP Statistics
Purpose
To review SNMP statistics.
Table 12-1 SNMP Security Levels
Model Security Level Authentication Encryption How It Works
v1 NoAuthNoPriv Community string None Uses a community string match for
authentication.
v2c NoAuthNoPriv Community string None Uses a community string match for
authentication.
v3 NoAuthNoPriv User name None Uses a user name match for
authentication.
AuthNoPriv MD5 or SHA None Provides authentication based on
the HMAC-MD5 or HMAC-SHA
algorithms.
authPriv MD5 or SHA DES Provides authentication based on
the HMAC-MD5 or HMAC-SHA
algorithms. Provides DES 56-bit
encryption in addition to
authentication based on the CBC-
DES (DES-56) standard.
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