Refer to the exhibit. Which option correctly describes the output shown?
A. Fallback to the PRI worked successfully when the connection to CUCM was lost
B. The ccm switchback uptime-delay was incorrectly set to immediate instead of graceful
C. Redundant CUCM server will be tried after 15 seconds has passed
D. ccm-manager fallback-mgcp command was missing from the configuration
I think A
D may present the following:
Mar 1 01:42:04.075: cmapp_mgr_process_ev_active_host_failed: Active host 0 (172.16.1.5) failed
*Mar 1 01:42:04.075: cmapp_mgr_check_hostlist: Active host is 0 (172.16.1.5)
*Mar 1 01:42:04.075: cmapp_try_fallback(set_to_mode=ON)
*Mar 1 01:42:04.079: cmapp_shut_backhaul: backhaul link shutdown is not configured
*Mar 1 01:42:04.079: cmapp_try_fallback: fallback is not configured
C – should show more hosts in host list
B – switchback debug is not shown
In my opinion, the correct answer is D.
As shown in the debugs, the router opened a TCP session with 172.16.100.11 but failed.
“TCP open failed for 172.16.100.11, calling callback”
“backhaul link shutdown not configured”