snmpwalk:tldr:7a156

This command is used to perform an SNMP walk operation to retrieve information from a network device using SNMP version 3.

Here is the breakdown of the command:

• snmpwalk: The main command to perform an SNMP walk operation.
• -v3: Specifies that SNMP version 3 should be used.
• -l ${authPriv}: Specifies the level of security to be used. ${authPriv} refers to the authentication and privacy levels. This could be one of the following values: noAuthNoPriv (no authentication and no privacy), authNoPriv (authentication without privacy), or authPriv (authentication with privacy).
• -u ${username}: Specifies the SNMPv3 user name to use for authentication and privacy.
• -a ${select}: Specifies the authentication protocol to use. ${select} refers to the selection of the authentication protocol, which could be one of the following values: MD5 or SHA.
• -A ${auth_passphrase}: Specifies the authentication passphrase (password) to be used for SNMPv3 authentication.
• -x ${select1}: Specifies the privacy protocol to use. ${select1} refers to the selection of the privacy protocol, which could be one of the following values: DES, AES (AES-128), or AES192 (AES-192).
• -X ${enc_passphrase}: Specifies the privacy passphrase (password) to be used for SNMPv3 privacy.
• ${ip}: Specifies the IP address or hostname of the device to query.
• ${oid}: Specifies the Object Identifier (OID) to start the SNMP walk operation. The OID represents the root of the tree that will be walked to retrieve information.

Overall, this command uses SNMPv3 authentication and privacy to retrieve information from a network device specified by the ${ip} parameter, starting at the OID ${oid}.