configure network-clock clock-source output

configure network-clock clock-source output {bits-bnc-1 [1pps | 8KHz] bits-bnc-2 [E1 | T1 | 10MHz]}


Configure the output network clock source as bits bnc 1 or 2.

Syntax Description

bits-bnc-1 Bits Clock 1 BNC connector.
1pps 1pps output clock.
8KHz 8 KHz output clock (default).
bits-bnc-2 Bits Clock 2 BNC connector.
E1 E1 (2.048 MHz) output clock (default).
T1 T1 (1.544 MHz) output clock.
10MHz 10 MHz output clock.


The default output clock source for Bits Clock 1 BNC connector is 8 KHz, and the default for Bits Clock 2 BNC connector is E1 (2.048 MHz).

Usage Guidelines

The E4G-200 and E4G-400 have clock sources beyond SyncE. The clock which drives all of the ports on a switch may be selected from:
  • SyncE (Synchronous Ethernet).

  • PTP – Precision Time Protocol, an optional 1588v2 module.

  • TDM – an optional module which has multiple T1/E1 interfaces for TDM/Ethernet interworking.

  • BITS – Building Integrated Timing Supply. A connector capable of receiving a timing signal provided by other building equipment.


The following command configures the region as T1:

configure network-clock clock-source input region t1

The following command configures the network-clock source as TDM:

configure network-clock clock-source input tdm


This command was first available in ExtremeXOS 15.1.

Platform Availability

This command is available on X460-24x, X460-48x E4G-200 and E4G-400 switches. On X460 platforms only Sync-E option is available as clock-source.