snmp-bridge-mib - provide Linux bridge information via SNMP
snmp-bridge-mib {bridge}
The following arguments are required:
bridge
The name of the Linux bridge for which you want to provide information via SNMP, e.g. br0.
The snmp-bridge-mib is an extension to net-snmp. It collects information about a bridge in a Linux system and exports them for query from other (remote) systems for management purposes.
The preferred method of snmp-bridge-mib to attach to net-snmp is agentx. For this to work, you will have to add the following line to /etc/snmp/snmpd.conf,
master agentx
restart snmpd and start snmp-bridge-mib. snmp-bridge-mib will then connect to the running snmpd daemon.
Another way of attaching snmp-bridge-mib to is to run it as an embedded perl module. You have to add
perl do "path to location of snmp-bridge-mib"
and restart snmpd.
Follow the instructions in this manpage and type
perl /usr/bin/snmp-bridge-mib br0
You'll get the following output:
registering at .1.3.6.1.2.1.17 running as a subagent. dot1qbridge agent started. NET-SNMP version 5.4.2.1 AgentX subagent connected
Now it's time for a first test:
$ export MIBS=+BRIDGE-MIB $ snmpwalk localhost .1.3.6.1.2.1.17
The output produced should look like
BRIDGE-MIB::dot1dStpBridgeHelloTime = INTEGER: 199 centi-seconds BRIDGE-MIB::dot1dStpBridgeForwardDelay = INTEGER: 1499 centi-seconds BRIDGE-MIB::dot1dStpPort.1 = INTEGER: 1 BRIDGE-MIB::dot1dStpPort.3 = INTEGER: 3 BRIDGE-MIB::dot1dStpPortPriority.1 = INTEGER: 32 BRIDGE-MIB::dot1dStpPortPriority.3 = INTEGER: 32 BRIDGE-MIB::dot1dStpPortState.1 = INTEGER: disabled(1) BRIDGE-MIB::dot1dStpPortState.3 = INTEGER: disabled(1) BRIDGE-MIB::dot1dStpPortEnable.1 = INTEGER: disabled(2) BRIDGE-MIB::dot1dStpPortEnable.3 = INTEGER: disabled(2) BRIDGE-MIB::dot1dStpPortPathCost.1 = INTEGER: 2 BRIDGE-MIB::dot1dStpPortPathCost.3 = INTEGER: 4 BRIDGE-MIB::dot1dStpPortDesignatedRoot.1 = STRING: "8000.001018382c78" BRIDGE-MIB::dot1dStpPortDesignatedRoot.3 = STRING: "8000.001018382c78" BRIDGE-MIB::dot1dStpPortDesignatedCost.1 = INTEGER: 0 BRIDGE-MIB::dot1dStpPortDesignatedCost.3 = INTEGER: 0 BRIDGE-MIB::dot1dStpPortDesignatedBridge.1 = STRING: "8000.001018382c78" BRIDGE-MIB::dot1dStpPortDesignatedBridge.3 = STRING: "8000.001018382c78" BRIDGE-MIB::dot1dStpPortDesignatedPort.1 = STRING: "32769" BRIDGE-MIB::dot1dStpPortDesignatedPort.3 = STRING: "32770" BRIDGE-MIB::dot1dStpPortPathCost32.1 = INTEGER: 2 BRIDGE-MIB::dot1dStpPortPathCost32.3 = INTEGER: 4 BRIDGE-MIB::dot1dTpLearnedEntryDiscards = Counter32: 0 BRIDGE-MIB::dot1dTpAgingTime = INTEGER: 300 seconds BRIDGE-MIB::dot1dTpFdbAddress.'...8,x' = STRING: 0:10:18:38:2c:78 BRIDGE-MIB::dot1dTpFdbAddress.'.!^/B|' = STRING: 0:21:5e:2f:42:7c BRIDGE-MIB::dot1dTpFdbPort.'...8,x' = INTEGER: 1 BRIDGE-MIB::dot1dTpFdbPort.'.!^/B|' = INTEGER: 3 BRIDGE-MIB::dot1dTpFdbStatus.'...8,x' = INTEGER: learned(3) BRIDGE-MIB::dot1dTpFdbStatus.'.!^/B|' = INTEGER: learned(3) BRIDGE-MIB::dot1dTpPort.1 = INTEGER: 1 BRIDGE-MIB::dot1dTpPort.3 = INTEGER: 3 BRIDGE-MIB::dot1dTpPortMaxInfo.1 = INTEGER: 1500 bytes BRIDGE-MIB::dot1dTpPortMaxInfo.3 = INTEGER: 1500 bytes BRIDGE-MIB::dot1dTpPortInFrames.1 = Counter32: 18082 frames BRIDGE-MIB::dot1dTpPortInFrames.3 = Counter32: 1546072 frames BRIDGE-MIB::dot1dTpPortOutFrames.1 = Counter32: 11601 frames BRIDGE-MIB::dot1dTpPortOutFrames.3 = Counter32: 10988 frames BRIDGE-MIB::dot1dTpPortInDiscards.1 = Counter32: 0 frames BRIDGE-MIB::dot1dTpPortInDiscards.3 = Counter32: 0 frames
1.
snmp-bridge-mib currently only supports one bridge which has to be specified on the commandline.
2.
Not all elements of RFC 4188 because they are either not available in sysfs or difficult to extract from the existing data.
snmpd.conf(5), Net::SNMP(3)
Jens Osterkamp <jens@linux.vnet.ibm.com>
Developer
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