Cisco 3845 Software Guide - Page 137

Chapter 6 Configuring Synchronous Ethernet Configuring SyncE Step 7 Step 8 Command show controller BITS copy running-config startup config Purpose Verify the configuration. (Optional) Save your entries in the switch startup configuration file. Enter the no network-clock-select mode option option 1 or the no network-clock-select mode option option 2 to select the other option. mode with the default E1 or T1 values. Use the no form of each command to remove the configuration or return to the default. This example configures EEC as T1 with ESF framing, B8ZS line coding, and 1 to 133 foot.line buildout. Switch (config)# network-clock-select option option2 Switch (config)# controller BITS input applique T1 framing esf linecode b8zs Switch (config)# controller BITS output applique T1 framing esf linecode b8zs line-build0-out 0-133ft Switch (config)# end Switch# show controllers BITS Applique type is T1 Line Coding is B8ZS(Rx), B8ZS(Tx) Framing is ESF(Rx), ESF(Tx) Line Build Out is 0-133ft No alarms detected. Selecting the Network Clock You can force selection of a particular network clock or select automatic clock selection where the switch uses the selection algorithm based on the priority and the validity of the input. Beginning in privileged EXEC mode, use this step to set the SyncE network clock. Step 9 Command set network-clocks {automatic | force-reselect | next-select} Step 10 show network-clocks Step 11 copy running-config startup config Purpose Select one of these options: • automatic-Use the clock selection algorithm to select the clock. • force-reselect-Force the system to select the valid input clock with the highest priority and to always keep this clock as the reference clock. • next-select-Force selection of the next valid input clock with the highest priority. If the switch is in nonrevertive mode, the clock input does not change unless the current clock becomes invalid. Verify the configuration. (Optional) Save your entries in the switch startup configuration file. OL-23400-01 Cisco ME 3800X and 3600X Switch Software Configuration Guide 6-9