SNMP connectivity Failed

[mohammad saeed]

Hi Experts,

I am trying to add 6509, ASA and 2960s devices to NCS, but I got " SNMP connectivity failed" although when I make verify credential before sync. I got positive message, and there reachability and can read cpu, ram interfaces of devices but can't see more details! 

my WLC added successfully without any issue!

Is there any extra configuration I have to add inside devices?

These my commands for all devices:

snmp-server engineID local 0123456789
snmp-server group NCSCORE v3 auth
snmp-server user coreuser NCSCORE v3 auth md5 **********
snmp-server host x.x.x.x version 3 auth coreuser

but username and group name will be different for each device.

Thanks for all

Mohammad Saeed

[AFROJ AHMAD · Accepted solution]

Hi ,

try adding these commands::

a view command  ::::   snmp-server view myview iso included

and your group should have both read and write view

for e.g

snmp-server group cisconms v3 auth read myview write myview

see how it works

Thanks-

Afroz

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[mohammad saeed]

Hi,

I tried it but no effect, the same snmp connectivity failed message!

any Idea

Thanks

[mohammad saeed]

Hi Afroz,

My 2960s L2 switches give me partial collection failure! what is the problem?

Many thanks for your help.

Mohammad 

[AFROJ AHMAD]

Hi Mohammad,

SNMP connectivity failed or SNMP reachability failure messages::

-check device is reachable from the PI console. 

 - check the SNMP community in DWC page o check snmp walk from PI server console:

For SNMPv2: snmpwalk -v2c -c <community-name> <Device-IP> <OID/Object name>

For

SNMPv3: snmpwalk -v3 -u <snmp-user> -l AuthPriv -a SHA -A <auth-password> -x AES -
X <priv-password>  <Device-IP> <OID/Object name>

Please check manual snmp walk from PI

Try to  increase the SNMP timeout value up to maximum 200 sec.

Thanks-

Afroz

[mohammad saeed]

Hi Afroz,

Thanks for you, Actually I did something and the core switch gave partial collection instead of SNMP connectivity fail, and 2960s switches from partial connection to completed SNMP!

What I did is I added telnet parameters in PI for each devices and works some how fine for core switch I can see a lot of information in PI (Vlans, VTP, sensors, VSS.....) I will try to increase SNMP timeout and will see the final results.

So the conclusion is Telnet very important parameter for devices in PI!?

Many Thanks Afroz for your support and help.

Mohammad Saeed

[AFROJ AHMAD]

yes indeed, both SNMP and telnet\ssh credentials are required.

Thanks-

Afroz

[mohammad saeed]

Hi Afroz,

Many thanks to you, all devices added successfully to NCS, but I want to ask about CUCM, Can I add it in Cisco prime 2.2?

Thanks again

[AFROJ AHMAD]

Hi Mohammad,

unfortunately ,it is not supported .

check the below link for compatibility matrix::

http://www.cisco.com/c/en/us/support/cloud-systems-management/prime-infrastructure/products-device-support-tables-list.html

**Do rate the useful post ***

Thanks-

Afroz

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[mohammad saeed]

Hi Afroz,

Actually I added and gave me it's managed! but SNMP connectivity fail because I couldn't add telnet/ssh2 parameters! or this is just fake connection! 

Thanks

Mohammad

[AFROJ AHMAD]

If the devices is not listed in the list , it will not work :(

Thanks-

[mohammad saeed]

But I installed it in device UCS 220 M rack mounted and it's listed! 

thanks

[mohammad saeed]

Hi Afroz,

After I added all switches and routers correctly to  the cisco prime NCS and was reachable and was working fine, suddenly I lost the ping from some 2960s switches! what is the problem? 

it's unreachable from NCS to switches and I can't ping the NCS from switches. other switches work fine without any issue but some switches has problem.! 

I tried with one switch to remove SNMP configuration and reload it again but still the same! one switch I reload it and become reachable to NCS but others still no result.

Any Idea!

Thanks

[AFROJ AHMAD]

If ping itself is not working ..check the network changes or devices configuration.

thanks-
 

[mohammad saeed]

I checked it and NCS give me this message "SNMP read: Server is busy with executing other requests, pls try again, SNMP write: server is busy with executing other requests, pls try again "

I restarted the Cisco prime but still the same message!

Thanks,