09-02-2019 04:55 AM
Hello
is there anyone who can explain me:
1) SNMP trap and informs (the difference/similarity between them etc)?
2) And how to configure SNMPv3 on nexus switch? Or please explain me SNMP in general or can you give me a link to a good explained guide?
3) Do I have to configure SNMP community when I'm going to use only SNMP v3?
09-02-2019 05:03 AM
Hi there,
To answer your questions:
1) Both TRAP and INFORM messages are sent from an SNMP agent to a receiver, the only difference is that a reciver must send back an acknowledgment for an INFORM message.
2) Take a look at the extensive NX-OS guide here:
3) SNMP community strings are a SNMPv1/2 construct and are not used in SNMPv3.
cheers,
Seb.
09-02-2019 05:19 AM
09-02-2019 05:40 AM
09-03-2019 04:33 AM
09-02-2019 05:40 AM - edited 09-02-2019 05:43 AM
The engineID is a unique character string used to identify the SNMP agent (ie, the switch). The localized-key is a user defined hex string between 10-130 characters in length, it can be omitted and it will be auto-generated.
The second passphrase is required when you choose to use priv .
The Authentication and Privacy (Encryption) passwords are separate strings and can/ should have different values.
cheers,
Seb.
09-03-2019 04:31 AM - edited 09-03-2019 04:32 AM
thanks! but i have 1 more question. can you look at?
09-02-2019 11:32 AM
09-03-2019 04:00 AM - edited 09-03-2019 04:27 AM
Thank you all for the answer. I have one more question
Can you look at?
i'm migrating configs from 'Extreme networks' switch to the Nexus-6000 switch
In Extreme I have this config of SNMPv3:
* configure snmpv3 add community MainRO name MainRO user v1v2c_ro
* configure snmpv3 add target-addr v1v2cNotifyTAddr param v1v2cNotifyParam ipaddress 1.1.1.1 transport-port 162 vr VR-Default tag-list defaultNotify
* configure snmpv3 add target-params v1v2cNotifyParam user v1v2cNotifyUser mp-model snmpv2c sec-model snmpv2c sec-level noauth
How the config on nexus switch will look like?
what I have to configure? snmp user and host? From config of extreme what is user, what is password
09-03-2019 04:43 AM
HI this is all you need for s3 to work on NX below , admin snmp and your own snmp if required , then check with SHOW SNMP
snmp-server user admin network-admin auth md5 PUTPASSWORDHERE priv PUTPASSWORDHERE localizedkey
snmp-server user netadmin network-admin auth sha PUTPASSWORDHERE priv aes-128 PUTPASSWORDHERE localizedkey
09-03-2019 04:50 AM
thank you, Mark
and what about snmp-server host?
From extreme switch: configure snmpv3 add target-addr v1v2cNotifyTAddr param v1v2cNotifyParam ipaddress 1.1.1.1 transport-port 162 vr VR-Default tag-list defaultNotify
09-03-2019 06:41 AM
Hi
you can use it yes but its more optional for traps , we poll from the snmp station itself to the switch so we dont require it , there's a few options, if your sending trap/traffic then use the host command , but we get the system to poll us so dont need to use it
09-03-2019 10:31 PM
Thank you!
02-24-2020 07:13 PM
02-24-2020 11:24 PM
Hi there,
If I understand your question correctly, read access is granted by default. Both read and write permissions require a 'view' to be specified which will limit which OIDs will be accessible via the R/W permission.
cheers,
Seb.
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