query for a tree of information about a network entity
snmpwalk [-d] [-p port] -v 1 host community [variable_name] snmpwalk [-d] [-p port] [-v 2] host noAuth [variable_name] snmpwalk [-d] [-p port] [-v 2] host srcparty dstparty context [variable_name]
If you don't specify variable_name, snmpwalk searches the entire Internet MIB for host.
The snmpwalk utility uses GET NEXT requests to query for a tree of information about a network entity (snmpbulkwalk uses BULK requests).
If you're using SNMP version 2, the following files must be configured:
For a description on how to configure the files please see the ``Administrative model'' section in the SNMPv2 chapter, and the file page for each of the configuration files listed above. If you wish to change the location of your configuration files, you must include a snmpd.conf file.
Retrieve the variables in the system subtree:
snmpwalk -v 1 netdev-kbox.cc.cmu.edu public system
snmpwalk netdev-kbox.cc.cmu.edu manager_party agent_party agent_context system
The output is similar to:
system.sysDescr.0 = "QNX 425 C, cpu: 586" system.sysObjectID.0 = OID: enterprises.QNX-Systems.1.1 system.sysUpTime.0 = Timeticks: (8336500) 23:09:25 Current time: Wed Mar 18 14:1 6:59 1998 system.sysContact.0 = "Dave Brown" system.sysName.0 = "" system.sysLocation.0 = "" system.sysServices.0 = 79
This ID:
system.syscontact.0
will be printed as:
syscontact.0
This ID:
udp.udpTable.udpEntry.udpLocalAddress.0.0.0.161
will be printed as:
udpLocalAddress.0.0.0.161
If the network entity has an error processing the request packet, an error packet is returned and snmpwalk displays a message to help pinpoint how the request was malformed.
If snmpwalk tries to search beyond the end of the MIB, it displays this message:
End of MIB
The snmpbulkwalk utility is more efficient.
snmpd,
snmpbulkwalk,
snmpget,
snmpgetnext,
snmpnetstat,
snmpstatus,
snmptest,
snmptrap,
snmptrapd
/etc/acl.conf file,
/etc/context.conf file,
/etc/mib.txt file,
/etc/party.conf file,
/etc/snmpd.conf file,
/etc/view.conf file
RFC 1065, RFC 1066, RFC 1067
RFC 1441, RFC 1445, RFC 1446
RFC 1448, RFC 1449
Marshall T. Rose, The Simple Book: An Introduction to
Internet Management, Revised 2nd ed. (Prentice-Hall,
1996, ISBN 0-13-451659-1)