Using Snmp Contexts To Access Specific Mibs; Configuration Considerations; Reviewing Snmp Statistics; Purpose - Enterasys G3G170-24 Cli Reference Manual

Table 5-1 SNMP Security Levels (Continued)
Model
v3

Using SNMP Contexts to Access Specific MIBs

By default, when operating from the switch CLI, G‐Series 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 5‐20.
Example
This example permits the "powergroup" to manage all MIBs via SNMPv3:
G3(su)->set snmp access powergroup security-model usm

Configuration Considerations

Commands for configuring SNMP on the G‐Series 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.
Security Level Authentication
NoAuthNoPriv User name
AuthNoPriv MD5 or SHA
authPriv MD5 or SHA
Encryption How It Works
None Uses a user name match for
authentication.
None Provides authentication based on
the HMAC-MD5 or HMAC-SHA
algorithms.
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.
Enterasys G-Series CLI Reference 5-3
Reviewing SNMP Statistics