Symptom

Conditions

- SW Image: 17.6.4 - HW Platform: WS-C3650-48FD-E

Workaround

Currently unknown

Further Problem Description

C3650 running 17.6.4, and has several telemetry subscriptions configured: OOLAPSWACC-1#show telemetry ietf subscription all Telemetry subscription brief ID Type State Filter type -------------------------------------------------------- 1000 Configured Valid xpath 1002 Configured Valid xpath 1003 Configured Valid xpath 1004 Configured Valid xpath 1005 Configured Valid xpath 1006 Configured Valid xpath 1007 Configured Valid xpath 1008 Configured Valid xpath 1009 Configured Valid xpath 1010 Configured Valid xpath 1011 Configured Valid xpath 1012 Configured Valid Xpath Out of those subscriptions, only one of them gets connects and sends metrics. For example, here is the configuration of subscription 1000: ! telemetry ietf subscription 1000 encoding encode-kvgpb filter xpath /interfaces-ios-xe-oper:interfaces/interface/statistics stream yang-push update-policy periodic 6000 receiver ip address 10.20.0.174 57000 protocol grpc-tcp ! OOLAPSWACC-1#show telemetry internal connection Telemetry connections Index Peer Address Port VRF Source Address State ----- -------------------------- ----- --- -------------------------- ---------- 64070 10.20.0.174 57000 0 10.65.63.1 Connecting <<<<< OOLAPSWACC-1#show telemetry ietf sub 1000 receiver Telemetry subscription receivers detail: Subscription ID: 1000 Address: 10.20.0.174 Port: 57000 Protocol: grpc-tcp Profile: Connection: 65535 State: Connecting Explanation: The pubd process is failing while retrieving an object: 2023/02/01 20:49:01.315992 {pubd_R0-0}{1}: [mdt-ctrl] [20964]: (note): Use count for connection 10572 set to 11. 2023/02/01 20:49:01.412062 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::channel) gRPC connect failed for [id: 35 --> 10.20.0.174:57000] (failed count: 1) - keep retrying 2023/02/01 20:49:02.412530 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::channel) gRPC connect failed for [id: 35 --> 10.20.0.174:57000] (failed count: 2) - keep retrying 2023/02/01 20:49:03.767767 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::channel) gRPC connect failed for [id: 35 --> 10.20.0.174:57000] (failed count: 3) - keep retrying 2023/02/01 20:49:06.672569 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::channel) gRPC connect failed for [id: 35 --> 10.20.0.174:57000] (failed count: 4) - keep retrying 2023/02/01 20:49:11.326899 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::channel) gRPC connect failed for [id: 35 --> 10.20.0.174:57000] (failed count: 5) - max reached 2023/02/01 20:49:11.327080 {pubd_R0-0}{1}: [mdt-ctrl] [20964]: (note): **** Event Entry: gRPC connection event 'channel failed' on subscription 541421240. 2023/02/01 20:49:11.327708 {pubd_R0-0}{1}: [pubd] [20964]: (ERR): (grpc::objstore) Failed to retrieve an object - invalid id (0)