Configure SNMP In Cisco Router

Description

1.    Telnet to the router/switch

prompt#telnet testrouter

2.    Go to the enable mode by specifying the password:

Router>enable
Password:
Router#

3.    Go into configuration mode:

Router#configure terminal 
Enter configuration commands, one per line. End
with CNTL/Z.
Router(config)#

4.    Use the command below to add a Read-Only community string:

Router(config)#snmp-server community public RO
where "public" is the Read-only community string.

5.    To add a Read-Write Community string, use the command below:

Router(config)#snmp-server community private RW
where "private" is the Read-write community string.

6.    Exit the configuration mode and save the settings:

Router(config)#exit 
Router#write memory 
Building configuration...
[OK]
Router#

To enable SNMP traps, follow the steps below in the Configuration mode of the Router/Switch:

First, set the host to which the traps have to be sent using the folowing command:
snmp-server host <IP Address> version <v1 or 2c> <RO community string>
where,
<IP Address> refers to the IP Address of the device to which the traps have to be sent
<v1 or 2c> refers to the SNMP version
<RO community string> refers to the Read-Only community string
Then, enable SNMP Traps using the command below:
snmp-server enable traps [notification-type] [notification-option] 
Ex: snmp-server enable traps config [this will send all configuration notifications as traps]