- Switch Telegraf from native IOS-XR YANG paths to OpenConfig
(openconfig-interfaces:interfaces/interface/state/counters)
- Use json_ietf encoding instead of proto (IOS-XR 24.3.1 compat)
- Target only CORE-01/CORE-02 (R9K routers blocked by CML mgmt net)
- Update all 3 Grafana dashboard queries to match OpenConfig field
names (in-octets, out-octets, in-pkts, out-pkts, in-errors, etc.)
- Rewrite gnmi_grpc_config.py to use SSH/CLI via paramiko instead of
NETCONF (IOS-XR 24.3.1 rejects NETCONF gRPC edit-config)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>