Specifications
9-33
Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
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
Configuring an NCDP Port
Once you enable NCDP on your node, NCDP is automatically enabled on all the node’s NNI ports. You
can alter the default NCDP port configuration through the cnfncdpport <portid> <options> command,
as shown in the following example:
M8850_LA.8.PXM.a > cnfncdpport 1:2.2:2 -ncdp enable -vpi 0 -vci 32 -admincost 1 -pcr 200
-scr 100 -mbs 50
Table 9-14 cnfncdpclksrc Command Parameters
Parameter Description
port-id Port identifier. For clocking ports on MGX 8850 (PXM1E/PXM45) and MGX 8950
switches, the port identifier is 7.35 or 7.36. For clocking ports on 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