How do you change the default SNMP Community string on an Enterasys C3?

[Robert_Lawrence]

How do you change the default SNMP Community string on an Enterasys C3?

[Rich_Upshaw]

One more thing: You need to specify an interface to communicate over via snmp for the C series such as a loopback or an interface VLAN.

set snmp interface vlan 510

[Paulo_Silva]

Hi Robert.

I use this "script" and test by snmpwalk.

Clear snmp default
clear snmp access ro security-model v1

clear snmp access ro security-model v2c

clear snmp access public security-model v1

clear snmp access public security-model v2c

clear snmp access public security-model usm

clear snmp community public

clear snmp group ro ro secu v1

clear snmp group public public sec v1

clear snmp group ro ro security-model v2c

clear snmp group public public security-model v2c

clear snmp group public public security-model usm

clear snmp user public

Configure snmpv3

set snmp group user security-model usm

set snmp user authentication sha encryption des privacy nonvolatile

set snmp access security-model usm privacy exact read All notify All write All nonvolatile

Test snmpwalk

snmpwalk -v 3 -a SHA -A -u -x des -X -l authPriv

[Daniel_Coughlin]

I found the securestack article for using the USM / snmp v3.

How to configure SNMP version 3 on Securestack switches

[Robert_Lawrence]

I forgot to add a description so here is some more information on what is going on.

I've been asked to change the default SNMP (public by default) community strings on my Enterasys C2/C3 switches. When I type "clear snmp community public", I can' no longer see the switch in my management software (which is to be expected). However, when i type "set snmp community whatever" and try to reattach with my management software, it will not allow me.

Now, if I go back and "set snmp community public", I can connect via my management software using either the public string or the whatever string.

I've also noticed if I do "show config snmp" after running "clear snmp community public", I see that exact command in the config. Normally if I run show config after running a clear command, I don't see the clear command listed in the config. Not sure if this has anything to do with it, just trying to give as much information as I can.

Any assistance would be greatly appreciated.

[Erik_Auerswald]

Hi Robert,

you can use
show snmp access to check the configured SNMP access methods.

Erik