Enable Debugging BGP in JUNOS

protocols {
    bgp {
        traceoptions {
            file bgplog size 150k files 10;
            flag all detail;
        }

root@TATA> monitor start bgplog


root@TATA>
*** bgplog ***
Mar 28 10:09:39.822544 task_process_events: recv ready for BGP_1200_1100.1.1.1.10+22316
Mar 28 10:09:39.822562 task_job_create_background: create prio 4 job Read peer for task BGP_1200_1100.1.1.1.10+22316
Mar 28 10:09:39.822568 background dispatch running job Read peer for task BGP_1200_1100.1.1.1.10+22316
Mar 28 10:09:39.822570 bgp_read_v4_message: receiving packet(s) from 1.1.1.10 (External AS 1200)
Mar 28 10:09:39.822576
Mar 28 10:09:39.822576 BGP RECV 1.1.1.10+22316 -> 1.1.1.9+179
Mar 28 10:09:39.822579 BGP RECV message type 4 (KeepAlive) length 19
Mar 28 10:09:39.822581 bgp_read_v4_message: done with 1.1.1.10 (External AS 1200) received 19 octets 0 updates 0 routes
Mar 28 10:09:39.822583 task_job_delete: delete background job Read peer for task BGP_1200_1100.1.1.1.10+22316
Mar 28 10:09:39.822663 background dispatch completed job Read peer for task BGP_1200_1100.1.1.1.10+22316