pim
eeb827665a
Two related bugs left interfaces faster than 1Gbps reporting wrong values to SNMP collectors: 1. ifSpeed (.5) was silently dropped for interfaces whose link speed exceeded 2.5Gbps. RFC 2863 requires ifSpeed to always be present and saturated at uint32 max (4294967295) when the real speed exceeds what fits in a Gauge32; ifHighSpeed carries the actual Mbps value. The row is now always emitted, capped at math.MaxUint32. 2. UpdateStats only rebuilt the MIB when the interface set changed. On startup, the stats routine connects to VPP and runs the first poll before the 1-second event-monitor poll has had a chance to call InitializeEventWatching, so the MIB is built from an empty interfaceDetails map and every row defaults to 1Gbps for life. Fix: filterValidInterfaces (which already calls GetAllInterfaceDetails to filter deleted interfaces from the stats segment) now also pushes those details through the MIB callback via a new InterfaceManager.NotifyDetails method. UpdateInterface- Details sets a staticFieldsDirty flag whenever Speed/MAC/MTU/ admin/oper/name actually change, and UpdateStats forces a rebuild on the next poll while that flag is set. Identical re-pushes do not dirty the cache, so AgentX session re-registration only happens on real change. Adds tests for the ifSpeed branches (0/nil/1G/10G/25G/100G) and for the dirty-flag transitions (fresh push, identical re-push, changed Speed). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
VPP SNMP AgentX Bridge
SNMP AgentX daemon that exposes VPP interface statistics via standard IF-MIB.
Quick Start
# Build
make build
# Test
make test
# Create Debian package
make pkg-deb
# Install package
sudo dpkg -i ../govpp-snmp-agentx_*.deb
Configuration
The Debian package installs a systemd service that reads configuration from /etc/default/govpp-snmp-agentx:
# Edit service configuration
sudo nano /etc/default/govpp-snmp-agentx
# Start service
sudo systemctl start govpp-snmp-agentx
Default configuration:
GOVPP_SNMP_AGENTX_FLAGS="-agentx.addr /var/agentx/master -vppcfg /etc/vpp/vppcfg.yaml -vppstats.period 10"
Documentation
- Manual page:
man govpp-snmp-agentx(after package installation) - Detailed documentation: docs/DETAILS.md
License
LGPL 3.0 (due to modified go-agentx dependency)