Cisco MGX 8950 Specifications download pdf (Page 105)

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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide

Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004

Chapter 2 Configuring General Switch Features

Configuring Clock Sources

Step 3 To display the parameter configuration of the BITS clock sources, enter the dspclkparms command as

shown in the following example:

M8850_LA.8.PXM.a > dspclkparms

BITS Cable Type : Twisted Pair

BITS Signal Type : Data Mode

The above example shows the default BITS clock configuration parameters. The cable type can be either

twisted pair or coax. The signal type can be either data mode or sync mode.

Step 4 If you need to change the BITS clock configuration parameters, enter the cnfclkparms command as

follows:

M8850_LA.8.PXM.a > cnfclkparms <signal type> <cable type>

Replace the signal type variable with 1 to select data or with 2 to select sync. Replace the cable type

variable with 1 to select twisted pair cabling or with 2 to select coaxial cabling.

Step 5 To configure an additional BITS clock source, repeat Step 2 using the correct parameters for the

additional source. The clock parameters configured in Steps 3 and 4 apply to both BITS clock inputs.

Step 6 To display the clock source configuration, enter the dspclksrcs command.

The dspclksrcs command is described in the “Managing Manually Configured Clocks Sources,” in

Chapter 9, “Switch Operating Procedures.”.

Table 2-6 Parameter Descriptions for cnfclksrc Command on the PXM

Parameter Values Descriptions

priority primary or secondary Replace <priority> with the type of clock source that is

either primary or secondary. The default is primary.

shelf 1The <shelf> value is always 1 and is optional.

slot 7 For the BITS clock, the <slot> number is 7 for a

Cisco MGX 8850 (PXM1E/PXM45) or

Cisco MGX 8950 switch, or slot 1 for a

Cisco MGX 8830 switch.

port 35 to 36 The <port> number identifies the line on the

PXM1E-UI-S3 or PXM1E-UI-S3/B back card to which

the BITS clock is connected, and the type of line

connected. Select the appropriate port number from the

following:

• Port 35 = upper line

• Port 36 = lower line

-bits

e1 or t1 The -bits option specifies whether the clock source line

is an E1 or T1.

-revertive

enable or disable The -revertive option enables or disables the revertive

feature for all clock sources.

Note In releases prior to Release 5, this option applied

only to BITS clock sources.

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