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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 9 Switch Operating Procedures
Managing NCDP Clock Sources
In the following example, the user configures an NCDP E1 clock source on port 7.35 with a external
source, a priority of 100, and the stratum level 2.
M8850_LA.8.PXM.a >
cnfncdpclksrc
7.35 0 -priority 100 -stratumLevel 2
Note
Once you enable NCDP, it is automatically enabled on all NNI ports on the switch.
Enter the dspncdpclksrc <portid> command to ensure the NCDP configuration took effect. Replace
<portid> with the 7.35 or 7.36 (for T1/E1 ports). The following example displays the NCDP
configuration on an E1 port.
M8850_LA.8.PXM.a >
dspncdpclksrc
7.35
Best clock source : No
Priority : 100
Stratum level : 2
Primary reference src id : 0(external)
Health : Bad
Table 9-14 cnfncdpclksrc Command Parameters
Parameter
Description
port-id
Port identifier. For clocking ports on Cisco MGX 8850 (PXM1E/PXM45)
and Cisco MGX 8950 switches, the port identifier is 7.35 or 7.36. For
clocking ports on Cisco MGX 8830 switches, the port identifier is 1.35 or
1.36.
For an internal oscillator, the port identifier is 255.255.
prs -id
Determines the primary reference source. Enter 0 for an external source, or
255 for an internal source.
-clocktype
Enter e1 or t1 as needed when the port ID is one of the following:
•
7.35 or 7.36 in an MGX 8850 or MGX 8950 switch or in an MGX 8880
Media Gateway
•
1.35 or 1.36 in an MGX 8830 chassis
Note
The default port type for 7.35/1.35 is E1. The default port type for
7.36/1.36 is T1. However, you can configure the BITS clocks portid
7.35/1.35 to be T1, or 7.36/1.36 to be E1, through the -clocktype
parameter.
-priority
Prioritizes the clock source. Enter a number in the range from 1 to 255.
Default = 128
-stratumLevel
Determines the stratum level of the clock source. Possible levels are 1, 2E,
2, 3E, 3, 4E, or 4.
Default = 3
