GSR12000 High CPU and Traffic drop. How to find a root cause?
Log:
Sep 22 08:59:43.923 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to up
Sep 22 11:08:40.872 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to down
Sep 22 11:09:21.163 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to up
Sep 22 11:10:39.150 TST: %BGP-3-BGP_NO_REMOTE_READ: x.47.233.174 connection timed out - has not accepted a message from us for 180000ms (hold time), 1 messages pending transmition.
Sep 22 11:10:39.150 TST: %BGP-5-ADJCHANGE: neighbor x.47.233.174 Down BGP Notification sent
Sep 22 11:10:39.150 TST: %BGP-3-NOTIFICATION: sent to neighbor x.47.233.174 4/0 (hold time expired) 0 bytes
Sep 22 11:11:22.149 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to down
Sep 22 11:11:29.602 TST: %BGP-5-ADJCHANGE: neighbor x.47.233.174 Up
Sep 22 11:11:52.404 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to up
Sep 22 11:15:54.103 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to down
Sep 22 11:16:34.583 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to up
Sep 22 11:17:04.613 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to down
Sep 22 11:17:34.596 TST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/3/0.1/3/2/1:1, changed state to up
Sep 23 09:47:55.688 TST: %BGP-5-ADJCHANGE: neighbor x.154.16.186 Down BGP Notification sent
Thank you very much.