Failed to get ping from agent

Archive Rancher 1.x
1

Hello Team,

The host appears as “Reconnecting” every 5 minutes.
Rancher Server Container shows:

[i.c.p.a.s.ping.impl.PingMonitorImpl ] Failed to get ping from agent [6] count [3]

Could you please tell me what port is looking for the agent?
How can I check it?

Thanks