55
Tip To save the gateway configuration, save it to NVRAM. Refer to the “Saving Configuration Changes” section on
page 57.
Clocking Configuration Examples
In the following example, a BITS clock is set at priority 1:
Gateway(config)# dial-tdm-clock priority 1 external
Gateway(config)# exit
Gateway#
In the following example, a trunk clock from an 8 PRI CT1 DFC is set at priority 2 and uses slot 4 and ds1 port (controller) 6:
Gateway(config)# dial-tdm-clock priority 2 4/6
Gateway(config)# exit
In the following example, a trunk clock from a CT3 DFC is set at priority 2 and uses slot 1, ds3 port 0, and ds1 port 19:
Gateway(config)# dial-tdm-clock priority 2 1/0:19
Gateway(config)# exit
In the following example, free-running clock is set at priority 3:
Gateway(config)# dial-tdm-clock priority 3 free
Gateway(config)# exit
Verify
You can verify the system primary and backup clocks, the status of all trunk DFC controller clocks, and information about and
the history of the last 20 TDM clock changes and the events that caused them.
•Verify your default system clocks and clock history by using the show tdm clocks command (this example is for T1/E1):
Gateway# show tdm clocks
Primary Clock:
--------------
TDM Bus Master Clock Generator State = HOLDOVER
Backup clocks for primary:
Source Slot Port DS3-Port Priority Status State
-------------------------------------------------------------
Trunk cards controllers clock health information
------------------------------------------------
Slot Type 7 6 5 4 3 2 1 0
1 T1 B B B B B B B B
CLOCK CHANGE HISTORY
--------------------------
CLOCK Event Time
----- ----- ----
1/1 Loss Of Signal (LOS) 00:00:22 UTC Tue Nov 30 1999
1/2 Loss Of Signal (LOS) 00:00:22 UTC Tue Nov 30 1999
1/3 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/4 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/5 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/6 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
1/7 Alarm Indication Signal (AIS) 00:00:22 UTC Tue Nov 30 1999
Gateway#