CISCO:-What are the configuration required for SNMP in cisco Switches .

As we all know that we are using the SNMP to monitor the network .In my case I am using the PRTG
as monitoring software but you can use the other monitoring software as per your requirement .


After completion of your PRTG server installation you have to enable the SNMP services in
cisco other devices in your network .In this blog I am not going to show you the Installation
process of PRTG and it's very easy installation process and also you can the reference from
PRTG official websites .



Lets Enable the SNMP services in pour devices buut before that we need to make it sure
there should be reachability from PRTG server to your network devices .



Please find the below diagram How and where my PRTG server is existed in the network .

Here , I have the reachability from my PRTG server to all the switches and also i have a PRTG server
pre-configured .



Take the Telnet to the router/switch
-----------------------------

sw-1#telnet 172.17.10.1
Go to the enable mode by specifying the password what you have given :

sw-1>enable
Password:
sw-1#
Go into configuration mode:


sw-1(config)#
Use the command below to add a Read-Only community string:

First of all you have to configure the SNMp community for read and read write .

sw-1(config)#snmp-server community public RO


Note:-where "public" is the Read-only community string.

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

sw-1(config)#snmp-server community private RW


Note:-where "private" is the Read-write community string.

Exit the configuration mode and save the settings:

sw-1(config)#exit 
sw-1#write memory 
Building configuration...
[OK]
sw-1#

The above configurations are just enabling the snmp community .but this below configuration are
very important .plese look on to this .


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>


<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

In my case  ,

sw-1(config)#snmp-server host 172.17.10.4 version 3 RO 


Step-2

Then, enable SNMP Traps using the command below:

snmp-server enable traps [notification-type] [notification-option] 


Note:This trap means , snmp-server enable traps config [this will send all configurationnotifications as traps]



Note-Sometimes this configuration may not sufficent becaue according to my experinece
sometimes needed the Authentication and authentication type etc. etc.