Name
global.DiscoveryVlanSwitchProcessor
Description
Processes the results from the SNMP - Switch - Vlan discovery probe/sensor and runs the horizontal discovery process
Script
// Discovery class
// Created By John Delinocci john.delinocci@servicenow.com
// Name DiscoveryVlanSwitchProcessor
// Accessible from All application scopes
// Description Processes the results from the SNMP - Switch - Vlan discovery probe/sensor and runs the horizontal discovery process
// Script
var DiscoveryVlanSwitchProcessor = Class.create();
DiscoveryVlanSwitchProcessor.prototype = {
initialize: function() {
this.oid_mib2 = 'iso.org.dod.internet.mgmt.mib-2.';
},
process: function(ci, result) {
this.cisco = false;
this.nexus = false;
// process SNMP results
var snmp = new SNMPResponse(result);
var sysDescr = snmp.getOIDText(this.oid_mib2 + 'system.sysDescr');
// determine if it's a cisco
if (sysDescr.toLowerCase().indexOf('cisco') != -1) {
this.cisco = true;
}
// determine if it's a cisco nexus
if (sysDescr.toLowerCase().indexOf('nx-os') != -1) {
this.nexus = true;
}
// get VLAN Ids
var vlanList = this.analyze(snmp);
// launch forwarding table probe
for (var x=0; x<vlanList.length; x++) {
this.triggerProbeForwardTable(ci, vlanList[x]);
}
// launch bridge port table probe
// if cisco iterate through vlans
if (this.cisco) {
for (var y=0; y<vlanList.length; y++) {
this.triggerProbeBridgePortTable(ci, vlanList[y]);
}
}
// if non-cisco run once
else {
this.triggerProbeBridgePortTable(ci);
}
// spanning tree table
// if cisco iterate through vlans
if (this.cisco) {
for (var z=0; z<vlanList.length; z++) {
this.triggerProbeSpanningTreeTable(ci, vlanList[z]);
}
}
// if non-cisco run once
else {
this.triggerProbeSpanningTreeTable(ci);
}
},
analyze: function(snmp) {
// if we didn't get any results, bail out...
var test = snmp.getOIDObj('iso');
if (test == null)
return;
// process results
var oid_ciscoMgmt = 'iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.';
var oid_ciscoVtpVlan = oid_ciscoMgmt + 'ciscoVtpMIB.vtpMIBObjects.vlanInfo';
var oid_ciscoVmVlan = oid_ciscoMgmt + 'ciscoVlanMembershipMIB.ciscoVlanMembershipMIBObjects.vmMembership';
var oid_juniperVlan = 'iso.org.dod.internet.private.enterprises.juniperMIB.jnxMibs.jnxExMibRoot.jnxExSwitching.jnxExVlan.jnxVlanMIBObjects';
var oid_dot1q_vlans = this.oid_mib2 + 'dot1dBridge.qBridgeMIB.qBridgeMIBObjects.dot1qVlan';
var ciscoVtpVlanTable = snmp.getOIDTable(oid_ciscoVtpVlan, 'vtpVlanEntry');
var ciscoVmVlanTable = snmp.getOIDTable(oid_ciscoVmVlan, 'vmMembershipSummaryEntry');
var juniperVlanTable = snmp.getOIDTable(oid_juniperVlan, 'jnxExVlanEntry');
var genericVlanTable = snmp.getOIDTable(oid_dot1q_vlans, 'dot1qVlanCurrentEntry');
var rex = /.*\.([0-9]+)$/;
var vlanIdList = [];
var inst, match;
// check the cisco vtpVlan table first
if (ciscoVtpVlanTable) {
for (inst in ciscoVtpVlanTable) {
match = rex.exec(inst);
if (match && match[1]) {
vlanIdList.push({'vlanId':match[1]});
}
}
}
// check the cisco VLAN management table
else if (ciscoVmVlanTable) {
for (inst in ciscoVmVlanTable) {
vlanIdList.push({'vlanId':inst.replace(/\./,'')});
}
}
// check the juniper VLAN table
else if (juniperVlanTable) {
for (inst in juniperVlanTable) {
vlanIdList.push({'vlanId':juniperVlanTable[inst].jnxExVlanTag, 'vlanIndex':inst});
}
}
// check the generic VLAN table
else if (genericVlanTable) {
for (inst in genericVlanTable) {
match = rex.exec(inst);
if(match && match[1])
vlanIdList.push({'vlanId':genericVlanTable[inst].dot1qVlanFdbId, 'vlanIndex':match[1]});
}
}
return vlanIdList;
},
triggerProbeForwardTable: function(ci, vlanIdObject) {
var oid_spec_list;
if (!this.cisco) {
var vlanIndex = vlanIdObject.vlanIndex;
// use QBridge MIB
oid_spec_list = 'table iso.org.dod.internet.mgmt.mib-2.dot1dBridge.qBridgeMIB.qBridgeMIBObjects.dot1qTp.dot1qTpFdbTable dot1qTpFdbAddress.' + vlanIndex + ',dot1qTpFdbPort.' + vlanIndex + ',dot1qTpFdbStatus.' + vlanIndex;
// use Bridge MIB
oid_spec_list += '\ntable iso.org.dod.internet.mgmt.mib-2.dot1dBridge.dot1dTp.dot1dTpFdbTable dot1dTpFdbAddress.' + vlanIndex + ',dot1dTpFdbPort.' + vlanIndex + ',dot1dTpFdbStatus.' + vlanIndex;
}
else {
// use Bridge MIB table for cisco
oid_spec_list = 'table iso.org.dod.internet.mgmt.mib-2.dot1dBridge.dot1dTp.dot1dTpFdbTable dot1dTpFdbAddress,dot1dTpFdbPort,dot1dTpFdbStatus';
}
var probe = new Probe.get("SNMP - Switch - ForwardingTable");
if (probe) {
probe.setSource(g_probe.getSource());
probe.addParameter("cmdb_ci", ci);
if (this.cisco)
probe.addParameter("index", vlanIdObject.vlanId);
probe.addParameter("oid_spec_list", oid_spec_list);
probe.addParameter("vlanId", vlanIdObject.vlanId);
probe.addParameter("cisco", this.cisco);
probe.addParameter("nexus", this.nexus);
probe.setEccPriority(g_probe.getParameter("priority"));
probe.setMidSelectDetails(g_probe.getParameter("mid_selector_details"));
probe.create(g_probe.getAgent(), g_probe.getEccQueueId());
}
},
triggerProbeBridgePortTable: function(ci, vlanList) {
var probe = new Probe.get("SNMP - Switch - BridgePortTable");
if (probe) {
probe.setSource(g_probe.getSource());
probe.addParameter("cmdb_ci", ci);
if (this.cisco)
probe.addParameter("index", vlanList.vlanId);
probe.setEccPriority(g_probe.getParameter("priority"));
probe.setMidSelectDetails(g_probe.getParameter("mid_selector_details"));
probe.create(g_probe.getAgent(), g_probe.getEccQueueId());
}
},
triggerProbeSpanningTreeTable: function(ci, vlanList) {
var probe = new Probe.get("SNMP - Switch - SpanningTreeTable");
if (probe) {
probe.setSource(g_probe.getSource());
probe.addParameter("cmdb_ci", ci);
if (this.cisco)
probe.addParameter("index", vlanList.vlanId);
probe.setEccPriority(g_probe.getParameter("priority"));
probe.setMidSelectDetails(g_probe.getParameter("mid_selector_details"));
probe.create(g_probe.getAgent(), g_probe.getEccQueueId());
}
},
type: 'DiscoveryVlanSwitchProcessor'
};Sys ID
ee8f0715eb71310020ee20b6a206fe38