1. Configure “traceoptions” and name the log as debug-bgp
set protocols bgp group BGP-GROUP1 traceoptions file debug-bgp
set protocols bgp group BGP-GROUP1traceoptions file size 1m
set protocols bgp group BGP-GROUP1 traceoptions file files 2
set protocols bgp group BGP-GROUP1 traceoptions flag all
commit
where:
max trace file size = 1m
max trace files = 2
flag all = trace everything
It will look something like this:
user1@QFX-re0> show configuration protocols bgp group BGP-GROUP1
type external;
traceoptions {
file debug-bgp size 1m files 2;
flag all;
2. View the trace file to verify
user1@QFX-re0> file list /var/log/debug-bgp
/var/log/debug-bgp
3. View the contents
user1@QFX-re0> file show /var/log/debug-bgp
Dec 16 13:37:36 trace_on: Tracing to “/var/log/debug-bgp” started
4. Monitor the log
user1@QFX-re0> monitor start debug-bgp
[SAMPLE OUTPUT]
Dec 16 14:02:13.411153 bgp_connect_start: peer 192.168.10.200 (External AS 65510)
Dec 16 14:02:13.411158 bgp_event: peer 192.168.10.200 (External AS 65510) old state Active event ConnectRetry new state Connect
Dec 16 14:02:13.411355 task_get_socket: domain AF_INET type SOCK_STREAM protocol 0 socket 99
Dec 16 14:02:13.411370 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option RecvBuffer(0) value 16384
Dec 16 14:02:13.411378 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option SendBuffer(1) value 16384
Dec 16 14:02:13.411381 task_set_socket: task BGP_65510_65520.192.168.10.200 socket 99
Dec 16 14:02:13.411396 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option NonBlocking(8) value 1
Dec 16 14:02:13.411404 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option ReUsePort(38) value 1
Dec 16 14:02:13.411474 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option PathMTUDiscovery(26) value 0
Dec 16 14:02:13.411484 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option TOS(16) value 192
Dec 16 14:02:13.411493 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option DontRoute(5) value 1
Dec 16 14:02:13.411499 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option IifRestrict(36) value 1
Dec 16 14:02:13.411506 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option TTL(15) value 1
Dec 16 14:02:13.411518 Eval BFD turn-on, currently off for peer 192.168.10.200 (External AS 65510)(fl:)instance master (kern-id 0)
Dec 16 14:02:13.411595 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option TcpAggressiveTransmission(59) value 0
Dec 16 14:02:13.411608 task_set_option_internal: task BGP_65510_65520.192.168.10.200 socket 99 option EnableTcpNoDelay(63) value 0
Dec 16 14:02:13.411691 task_timer_reset: reset BGP_65510_65520.192.168.10.200_Connect
Dec 16 14:02:13.411698 task_timer_set_oneshot_latest: timer BGP_65510_65520.192.168.10.200_Connect interval set to 2:28
5. Stop monitoring using this command
user1@QFX-re0> monitor stop
6. Deactivate traceoptions if finished
user1@QFX-re0> deactivate protocols bgp group BGP-GROUP1 traceoptions
user1@QFX-re0> show configuration protocols bgp group BGP-GROUP1
type external;
inactive: traceoptions {
file debug-bgp size 1m files 2;
flag all;
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