TechTalk: Enabling SNMP in Cisco Routers / Switches

TLDR

This article will guide your through the steps to enable SNMP in Cisco Routers and Switches

Description

Telnet to the router/switch

prompt# telnet testrouter

Go to the enable mode by specifying the password:

Router>enable

Password:

Router#

Go into configuration mode:

Router#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#

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.

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.

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 configurationnotifications as traps]

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