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add per-node mac table populated from snmp and arp

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Ian Gulliver
2026-01-18 14:54:06 -08:00
parent 2262e8d3bf
commit 54fc941728
4 changed files with 54 additions and 11 deletions
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21
snmp.go
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@@ -124,7 +124,7 @@ func (t *Tendrils) querySNMPDevice(node *Node, ip net.IP) {
t.querySysName(snmp, node)
t.queryInterfaceMACs(snmp, node)
t.queryBridgeMIB(snmp, ip)
t.queryBridgeMIB(snmp, node)
}
func (t *Tendrils) querySysName(snmp *gosnmp.GoSNMP, node *Node) {
@@ -192,7 +192,7 @@ func (t *Tendrils) queryInterfaceMACs(snmp *gosnmp.GoSNMP, node *Node) {
}
}
func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, deviceIP net.IP) {
func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, node *Node) {
portOID := "1.3.6.1.2.1.17.7.1.2.2.1.2"
portResults, err := snmp.BulkWalkAll(portOID)
@@ -238,19 +238,18 @@ func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, deviceIP net.IP) {
continue
}
ifIndex, exists := bridgePortToIfIndex[entry.bridgePort]
if !exists {
ifIndex = entry.bridgePort
}
ifName := rewritePortName(ifNames[ifIndex])
if t.DebugSNMP {
ifIndex, exists := bridgePortToIfIndex[entry.bridgePort]
if !exists {
ifIndex = entry.bridgePort
}
ifName := ifNames[ifIndex]
if ifName == "" {
ifName = "??"
}
log.Printf("[snmp] %s: mac=%s port=%s", deviceIP, mac, ifName)
log.Printf("[snmp] %s: mac=%s port=%s", snmp.Target, mac, ifName)
}
t.nodes.Update(nil, mac, nil, "", "", "snmp")
t.nodes.UpdateMACTable(node, mac, ifName)
}
}