MNS-BB
Software User Guide
-39-
8.8
Using the CLI To List Current SNMP Trap Receivers
This command lists the currently configured trap receivers along with the current SNMP community
name data.
Synta
x:
show snmp
In the next example, the
show snmp
command shows that the switch has been previously configured
to send SNMP traps to management stations belonging to the “public” and “private” communities.
LE2425A(snmp)##
show snmp
SNMP CONFIGURATION INFORMATION
------------------------------
SNMP Get Community Name : public
SNMP Set Community Name : private
SNMP Trap Community Name : public
AuthenTrapsEnableFlag : enabled
SNMP Access Status : enabled
SNMP MANAGERS INFO
------------------
IP Address = 192.168.1.21
SNMP TRAP STATIONS INFO
-----------------------
IP Address = 192.168.1.21 Trap Type = All
8.9
SNMP version 3 (SNMPv3)
Simple Network Management Protocol Version 3 (SNMPv3) is an interoperable standards-based
protocol for network management. SNMPv3 provides secure access to devices by a combination of
authenticating and encrypting packets over the network. The security features provided in SNMPv3
are:
•
Message integrity---Ensuring that a packet has not been tampered with in-transit.
•
Authentication---Determining the message is from a valid source.
•
Encryption---Scrambling the contents of a packet prevent it from being seen by an unauthorized
source.
SNMPv3 provides for both security models and security levels. A security model is an authentication
strategy that is set up for a user and the group in which the user resides. A security level is the
permitted level of security within a security model. A combination of a security model and a security
level will determine which security mechanism is employed when handling an SNMP packet. Three
security models are available: SNMPv1, SNMPv2c, and SNMPv3. Table below identify what the
combinations of security models and levels mean:
Table: SNMP Security Models and Levels
Mode
l
Level
Authentication
Encryptio
n
What Happens
v1 noAuthNoPri
v
Community
String
No
Uses a community string match for
authentication.
v2c noAuthNoPri
v
Community
String
No
Uses a community string match for
authentication.
v3
noAuthNoPri
Username
No
Uses a username match for authentication.
