Q. What variables are tested with the SNMP Traffic probe?
A. The SNMP Traffic probe retrieves system and traffic information from a device. The information comes from the system and interfaces groups of SNMP MIB-II.
To view traffic (bytes/second, packets/second, errors/minute) for any interface, right-click a link attached to the interface, and choose Status Window.
The Status window also shows sysLocation, sysContact, and sysUpttime fromt he system group in the device's Status window.
SNMPv1: When you set the SNMP Version to SNMPv1, the following variables are queried:
Code: |
MIB Variable OID SNMP Version ifInOctets 1.3.6.1.2.1.2.2.1.10 SNMPv1 ifInUcastPkts 1.3.6.1.2.1.2.2.1.11 SNMPv1 ifInNUcastPkts 1.3.6.1.2.1.2.2.1.12 SNMPv1 ifOutOctets 1.3.6.1.2.1.2.2.1.16 SNMPv1 ifOutUcastPkts 1.3.6.1.2.1.2.2.1.17 SNMPv1 ifOutNUcastPkts 1.3.6.1.2.1.2.2.1.18 SNMPv1 |
InterMapper examines these two variables to decide whether an interface is up or down:
Code: |
MIB Variable OID SNMP Version ifAdminStatus 1.3.6.1.2.1.2.2.1.7 SNMPv1 ifOperStatus 1.3.6.1.2.1.2.2.1.8 SNMPv1 |
InterMapper examines these variables to detect error conditions:
Code: |
MIB Variable OID SNMP Version ifInDiscards 1.3.6.1.2.1.2.2.1.13 SNMPv1 ifInErrors 1.3.6.1.2.1.2.2.1.14 SNMPv1 ifOutDiscards 1.3.6.1.2.1.2.2.1.19 SNMPv1 ifOutErrors 1.3.6.1.2.1.2.2.1.20 SNMPv1 |
SNMPv2c: When you set the SNMP Version to SNMPv2c, the following variables are queried:
This variable set is used on an initial scan of the device.
Code: |
MIB Variable OID SNMP Version ifDescr 1.3.6.1.2.1.2.2.1.2 SNMPv1 ifType 1.3.6.1.2.1.2.2.1.3 SNMPv1 ifMTU 1.3.6.1.2.1.2.2.1.4 SNMPv1 ifSpeed 1.3.6.1.2.1.2.2.1.5 SNMPv1 ifPhysAddress 1.3.6.1.2.1.2.2.1.6 SNMPv1 ifAdminStatus 1.3.6.1.2.1.2.2.1.7 SNMPv1 ifOperStatus 1.3.6.1.2.1.2.2.1.8 SNMPv1 ifName 1.3.6.1.2.1.31.1.1.1.1 SNMPv2c ifHighSpeed 1.3.6.1.2.1.31.1.1.1.15 SNMPv2c ifPromiscuousMode 1.3.6.1.2.1.31.1.1.1.16 SNMPv2c ifConnectorPresent 1.3.6.1.2.1.31.1.1.1.17 SNMPv2c ifAlias 1.3.6.1.2.1.31.1.1.1.18 SNMPv2c |
This variable set is polled to display statistics for the device's operation.
Code: |
MIB Variable OID SNMP Version ifAdminStatus 1.3.6.1.2.1.2.2.1.7 SNMPv1 ifOperStatus 1.3.6.1.2.1.2.2.1.8 SNMPv1 ifLastChange 1.3.6.1.2.1.2.2.1.9 SNMPv1 ifInUcastPkts 1.3.6.1.2.1.2.2.1.11 SNMPv1 ifInErrors 1.3.6.1.2.1.2.2.1.14 SNMPv1 ifInDiscards 1.3.6.1.2.1.2.2.1.13 SNMPv1 ifOutUcastPkts 1.3.6.1.2.1.2.2.1.17 SNMPv1 ifOutErrors 1.3.6.1.2.1.2.2.1.20 SNMPv1 ifOutDiscards 1.3.6.1.2.1.2.2.1.19 SNMPv1 sysUpTime 1.3.6.1.2.1.1.3 SNMPv1 ifHCInOctets 1.3.6.1.2.1.31.1.1.1.6 SNMPv2c ifHCOutOctets 1.3.6.1.2.1.31.1.1.1.10 SNMPv2c ifInMulticastPkts 1.3.6.1.2.1.31.1.1.1.2 SNMPv2c ifInBroadcastPkts 1.3.6.1.2.1.31.1.1.1.3 SNMPv2c ifOutMulticastPkts 1.3.6.1.2.1.31.1.1.1.4 SNMPv2c ifOutBroadcastPkts 1.3.6.1.2.1.31.1.1.1.5 SNMPv2c |
Note: In the SNMPv2c , the input and output MulticastPkts and BroadcastPkts MIB variables replace NUcastPkts variables of the SNMPv1 probe, which are deprecated. HCOctets replace the regular Octets counters. Pkts and errors still use the MIB-II 32 bit counters.
Note: The SNMP Traffic probe is known as SNMP MIB-II in earlier versions. It was renamed to reflect its purpose more accurately.