Extreme Networks ExtremeWare 7.7, Справочник по командам

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2184 ExtremeWare 7.7 Command Reference Guide
T1, E1, and T3 WAN Commands—Alpine 3800 Series Platforms
configure ports clock source
configure ports <portlist> [t1 | e1 | t3] clock source [internal | line]
Description
Configures the clock source for WAN links.
Syntax Description
Default
By default the clock source is derived from the line.
Usage Guidelines
The clock is used to synchronize data transmission across a WAN link. Generally, one end of the link
provides the master clock, and the other end of the link recovers the clock from the signal on the line. If
needed, an internal clock is available.
If the clock source is configured as “line”, but the clock cannot be recovered from the signal on the line,
the hardware will use the internal clock instead.
Example
The following command sets the clock source to internal:
configure ports 4:2 t1 clock source internal
History
This command was first available in ExtremeWare v6.1.5w2.01WAN technology release.
E1 support was added in ExtremeWare v6.1.8w3.0.1b56 WAN technology release.
T3 support was added in ExtremeWare v6.1.8w3.0.1b61 WAN technology release.
This command was subsequently incorporated into ExtremeWare 7.0.0.
Platform Availability
This command is available on the Alpine 3800 series platform, when a WAN module is installed.
portlist A list of ports.
internal Specifies the internal clock.
line Specifies clock derived from line signal.