snmpwalk

Walk entire MIB

$ snmpwalk -v2c -c [community] [host]

$ snmpwalk -v2c -c [public] [host] [1.3.6.1.2.1.1]

$ snmpwalk -v3 -u [user] -l authPriv -A [authpass] -X [privpass] [host]

$ snmpwalk -On -v2c -c [community] [host]

$ snmpwalk -v2c -c [public] [host] system

$ snmpwalk -Oqv -v2c -c [public] [host] [oid]

snmpwalk [-v version] [-c community] [options] host [oid]

snmpwalk retrieves a subtree of management values from an SNMP agent by issuing successive GETNEXT requests. Starting from a specified OID, it walks through the MIB tree and displays all values until it reaches the end of the subtree, providing a comprehensive view of device management data.
The tool supports SNMPv1, v2c, and v3. For v1 and v2c, community strings provide authentication, with "public" being a common read-only default. SNMPv3 adds robust security through username-based authentication (MD5/SHA) and encryption (DES/AES).
The starting OID determines the scope of the walk. Walking from the root retrieves all available data, while specifying a subtree like system or interfaces limits results. Output formatting options like -On (numeric OIDs) and -Oq (quick print) make output easier to parse in scripts.

-v VERSION

SNMP version (1, 2c, 3).

Community string.

SNMPv3 username.

Security level.

Auth passphrase.

Privacy passphrase.

Numeric OIDs.

Quick output.

Values only.

Community strings are plaintext. v3 recommended for security. Large walks may be slow.

snmpwalk is part of Net-SNMP, the standard open-source SNMP implementation. It's essential for network device monitoring and discovery.

snmpget(1), snmpset(1), snmptranslate(1)