SNMP tools snmpwalk, snmpget, snmpset and snmptrap

snmpwalk

snmpwalk allows you to retrieve subtrees.

For more information on this subject, please consult the snmpwalk instructions page, available on the official Net-SNMP open-source repositories.

Example

The following command will retrieve all of the variables under system:

snmpwalk -Os -c public -v 1 zeus system

-Os

(parsing option) Print only last symbolic element of OID (OID = object identifier).

-c public

where public  is the community name.

-v 1

Will use 1st version of the SNMP protocol (community based).

zeus

Name of the target system.

system

OID name of the network entity.

snmpget and snmpset

snmpget is used to query for information on a network entity.

snmpset is used to set information on a network entity.

Examples

1. snmpget -c public zeus system.sysDescr.0

   Will return value of sysDescr.0 OID if available.

2. snmpset -c private -v 1 test-hub system.sysContact.0 s [e-mail]

   Will set sysContact.0 OID to the string value [e-mail].

   test-hub
   Name of the target system.

   system.sysContact.0

   	OID of the object for which the value is to be set.
   s	type of variable that is to be set (here: string)

   [e-mail]

   New value.

snmptrap

snmptrap allows you to send an SNMP notification.

For more information on this subject, please consult the snmptrap instructions page, available on the official Net-SNMP open-source repositories.

Example

The following command will send a notification for OID sysDescr.0:

snmptrap -v 1 -c public zeus sysDescr.0

-v 1

Will use 1st version of the SNMP protocol (community based).

-c public

where public is the community name.

zeus

Name of the target system.

sysDescr.0

OID which you want to send as notification.