R2511-HP MSR Router Series Interface Command Reference(V5)

50
Default command level
2: System level
Parameters
dteclk1: Sets the interface clock selection mode to DTE clock option 1.
dteclk2: Sets the interface clock selection mode to DTE clock option 2.
dteclk3: Sets the interface clock selection mode to DTE clock option 3.
dteclk4: Sets the interface clock selection mode to DTE clock option 4.
dteclk5: Sets the interface clock selection mode to DTE clock option 5.
dteclkauto: Sets the interface clock selection mode to DTE auto-negotiation.
Usage guidelines
As DTE, the interface accepts the clock provided by the DCE. Because transmitting and receiving clocks
of synchronization devices are independent, the receiving clock of a DTE device can be either the
transmitting or receiving clock of the DCE device, so is the transmitting clock. Therefore, five clock options
are available for a DTE device.
Figure 1 Select a clock for a synchronous serial interface
In the figure, "TxClk" represents transmitting clock, and "RxClk" represents receiving clock.
Table 10 de
scribes the four clock selection options for a synchronous serial interface operating as DTE
and DCE, respectively.
Table 10 Clock options available for a synchronous serial interface operating as DTE
Clock selection o
p
tion Descri
p
tion
DTEclk1 TxClk = TxClk, RxClk = RxClk.
DTEclk2 TxClk = TxClk, RxClk = TxClk.
DTEclk3 TxClk = RxClk, RxClk = TxClk.
DTEclk4 TxClk = RxClk, RxClk = RxClk.
DTEclk5 TxClk = Local, RxClk = Local.
In the table, the clock preceding the equal sign (=) is the DTE clock and the one that follows is the DCE
clock.
Examples
# Set the synchronous serial interface operating as DTE to use the clock selection option dteclk2.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] clock dteclk2