SNMP configuration

[vishalpatil86]

Dear All,

below is the SNMP configuration, but I am little bit of confused. Like how does it work?

Can anyone explain??? Also, i want to know the difference between SNMP and RMON. How can I use RMON here effectively?

snmp-server community chas_ro RO

snmp-server community chas_rw RW

snmp-server community tt1 RO

snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart

snmp-server enable traps transceiver all

snmp-server enable traps call-home message-send-fail server-fail

snmp-server enable traps tty

snmp-server enable traps eigrp

snmp-server enable traps flex-links status

snmp-server enable traps fru-ctrl

snmp-server enable traps entity

snmp-server enable traps ether-oam

snmp-server enable traps flash insertion removal

snmp-server enable traps l2tc threshold sys-threshold

snmp-server enable traps power-ethernet police

snmp-server enable traps cpu threshold

snmp-server enable traps rep

snmp-server enable traps vtp

snmp-server enable traps vlancreate

snmp-server enable traps vlandelete

snmp-server enable traps auth-framework sec-violation

snmp-server enable traps dot1x auth-fail-vlan guest-vlan no-auth-fail-vlan no-guest-vlan

snmp-server enable traps envmon fan shutdown supply temperature status

snmp-server enable traps entity-diag boot-up-fail hm-test-recover hm-thresh-reached scheduled-test-fail

snmp-server enable traps port-security

snmp-server enable traps ethernet cfm cc mep-up mep-down cross-connect loop config

snmp-server enable traps ethernet cfm crosscheck mep-missing mep-unknown service-up

snmp-server enable traps ethernet cfm alarm

snmp-server enable traps ethernet evc status create delete

snmp-server enable traps event-manager

snmp-server enable traps rf

snmp-server enable traps cef resource-failure peer-state-change peer-fib-state-change inconsistency

snmp-server enable traps config-copy

snmp-server enable traps config

snmp-server enable traps config-ctid

snmp-server enable traps hsrp

snmp-server enable traps ipmulticast

snmp-server enable traps pim neighbor-change rp-mapping-change invalid-pim-message

snmp-server enable traps energywise

snmp-server enable traps bridge newroot topologychange

snmp-server enable traps stpx inconsistency root-inconsistency loop-inconsistency

snmp-server enable traps syslog

snmp-server enable traps rtr

snmp-server enable traps errdisable

snmp-server enable traps vlan-membership

snmp-server enable traps mac-notification change move threshold

snmp-server host 192.168.100.253 version 2c chas_ro

[cadet alain · Accepted solution]

Hi,

snmp-server community chas_ro RO:

this is a read-only community with password chas_ro

snmp-server community chas_rw RW:

this is a read-write community with password chas_rw

So when NMS wants to read MIB values it will use the password for RO community and when it wants to read or write(change) MIB values it will use the password for RW community.

snmp-server host 192.168.100.253 version 2c chas_ro:

you define the IP address of the NMS where you will be sending V2c traps( unsolicited infos pushed to NMS)

snmp-server enable traps:

you enable the sending of traps for all the following events.

Now concerning RMON: it is used for monitoring MIB values when they attain some threshold or a threshold change

has been crossed then it will trigger an event: sending a SNMP trap and/or syslog message

Regards.

Alain

Don't forget to rate helpful posts.

[vishalpatil86]

Hi Alain,

Thanks for the reply... But where does the MIB value reside? In switch or managed device?

And what is OID?

[cadet alain · Accepted solution]

Hi,

OID is Object Identifier which  uniquely identifies  a managed object  in the  MIB.

The MIB must be known by both the SNMP agent( the end device) and the NMS( the machine which receives traps or send

GET or SET queries to the agent).

Regards.

Alain

Don't forget to rate helpful posts.

[vishalpatil86]

thanks alain...

I have the core switch 4506e in which above SNMP is configured. 4506e is connected to 6 different 2960 switches to which end users are connected. I want to know bandwidth utilization per port.

How can I achieve this?

Please help

[shubhamkumarhcl]

http://www.ccnaccnplinux.com/2015/02/configuraton-of-syslogsnmp-and-netflow.html

http://www.ccnaccnplinux.com/2015/03/snmpv3-configuration.html