From 32da723b2cb7445fb06eea8796f1da639fddd29f Mon Sep 17 00:00:00 2001
From: Ian Gulliver <git@flamingcow.io>
Date: Sat, 31 Jan 2026 13:20:20 -0800
Subject: [PATCH] Clear MAC table on each SNMP poll and reduce ping threshold

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .claude/settings.local.json | 6 +++++-
 .gitignore                  | 2 +-
 config.yaml                 | 3 +++
 nodes.go                    | 7 +++++++
 ping.go                     | 2 +-
 snmp.go                     | 2 ++
 types.go                    | 2 +-
 7 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index ca5e438..30ed05e 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -94,7 +94,11 @@
       "Bash(go test:*)",
       "Bash(git stash:*)",
       "Bash(git revert:*)",
-      "Bash(done)"
+      "Bash(done)",
+      "Bash(while read id)",
+      "Bash(do cat /home/flamingcow/tendrils/status)",
+      "Bash(for id in node_01kgay2wynew8tjh1bpr9sd11e node_01kgay2wynew2t7qmfvtkrq2nb node_01kgay2wykevgbkxfvavxgpq30 node_01kgay2wynew5b80p45h8mdtpj node_01kgay2wynevtsrw26tprvqysw node_01kgay2wynevy9gp10a6rr4y2d)",
+      "Bash(do)"
     ],
     "ask": [
       "Bash(rm *)"
diff --git a/.gitignore b/.gitignore
index dc866f2..b49eee4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,4 @@ log
 *~
 cert.pem
 key.pem
-status
+status*
diff --git a/config.yaml b/config.yaml
index a23d098..5ff27db 100644
--- a/config.yaml
+++ b/config.yaml
@@ -217,3 +217,6 @@ locations:
       nodes:
       - names: ["sunset"]
       - names: ["RX-CONTROL-1"]
+
+shared_names:
+  - "ULXD4Q G50 REV5"
diff --git a/nodes.go b/nodes.go
index d9c0125..bb4e123 100644
--- a/nodes.go
+++ b/nodes.go
@@ -503,6 +503,13 @@ func (n *Nodes) UpdateMACTable(node *Node, peerMAC net.HardwareAddr, ifaceName s
 	node.MACTable[peerMAC.String()] = ifaceName
 }
 
+func (n *Nodes) ClearMACTable(node *Node) {
+	n.mu.Lock()
+	defer n.mu.Unlock()
+
+	node.MACTable = map[string]string{}
+}
+
 func (n *Nodes) SetDanteClockMaster(ip net.IP) {
 	n.Update(nil, nil, []net.IP{ip}, "", "", "ptp")
 
diff --git a/ping.go b/ping.go
index e6b8b44..d382c3c 100644
--- a/ping.go
+++ b/ping.go
@@ -24,7 +24,7 @@ type PingManager struct {
 	failures map[string]int
 }
 
-const pingFailureThreshold = 5
+const pingFailureThreshold = 3
 
 func NewPingManager() *PingManager {
 	pm := &PingManager{
diff --git a/snmp.go b/snmp.go
index 684f012..0d430b3 100644
--- a/snmp.go
+++ b/snmp.go
@@ -544,6 +544,8 @@ func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, node *Node, ifNames map[i
 
 	bridgePortToIfIndex := t.getBridgePortMapping(snmp)
 
+	t.nodes.ClearMACTable(node)
+
 	for _, entry := range macPorts {
 		mac := entry.mac
 
diff --git a/types.go b/types.go
index 04de840..dbf225e 100644
--- a/types.go
+++ b/types.go
@@ -453,7 +453,7 @@ type Node struct {
 	ID                    string                 `json:"id"`
 	Names                 NameSet                `json:"names"`
 	Interfaces            InterfaceMap           `json:"interfaces"`
-	MACTable              map[string]string      `json:"-"`
+	MACTable              map[string]string      `json:"mac_table,omitempty"`
 	PoEBudget             *PoEBudget             `json:"poe_budget,omitempty"`
 	DanteTxChannels       int                    `json:"dante_tx_channels,omitempty"`
 	DanteClockMasterSeen  time.Time              `json:"-"`