If a Gateway is configured as a Partner Gateway with static routing, and the ICMP responder is configured to track the reachability of those routes, a debug.py command is provided to indicate the UP or DOWN states, as follows:
vcadmin@vcg1-example:~$ sudo /opt/vc/bin/debug.py --icmp_monitor { "icmpProbe": { "cTag": 0, "destinationIp": "0.0.0.0", "enabled": false, "frequencySeconds": 0, "probeFail": 0, "probeType": "NONE", "probesSent": 0, "respRcvd": 0, "sTag": 0, "state": "DOWN", "stateDown": 0, "stateUp": 0, "threshold": 0 }, "icmpResponder": { "enabled": false, "ipAddress": "0.0.0.0", "mode": "CONDITIONAL", "reqRcvd": 0, "respSent": 0, "state": "DOWN" } } vcadmin@vcg1-example:~$
When the ICMP responder is enabled, the DOWN state means that there are no Edges connected to the Gateway.