Network Synchronization - Alcatel-Lucent 7450 Basic System Configuration Manual

To check if a DHCP server lease is flagged to skip persistency updates, use the tools dump
persistence dhcp-server record record-key CLI command. When flagged to skip
persistency updates, the persistency record output will include "lease mode : LT" (LT = Lease
Time) and a "lease time : ..." field. When not flagged to skip persistency updates, the
persistency record output will include "lease mode : ET" (ET = Expiry Time) and an "expires
: ..." field.

Network Synchronization

This section describes network synchronization capabilities available on SR OS platforms.
These capabilities involve multiple approaches to network timing; namely SDH/SONET,
Synchronous Ethernet, BITS, and Adaptive clocking and a Precision Time Protocol (PTP)
IEEE 1588v2. These features address barriers to entry by:
Network synchronization is commonly distributed in a hierarchical master-slave topology at
the physical layer as shown in
Basic System Configuration Guide
• Providing synchronization quality required by the mobile space; such as radio
operations and circuit emulation services (CES) transport.
• Augmenting and potentially replacing the existing (SONET/SDH) timing
infrastructure and delivering high quality network timing for time sensitive
applications in the wireline space.
Figure 13.
System Management
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