Cisco MGX 8950 Specifications download pdf (Page 400)

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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

Note When the switch is configured for manual clock distribution, the only parameter that is useful in the

dspncdp display is the Distribution Mode.

Table 9-16 describes the objects displayed by the dspncdp command.

Table 9-16 dspncdp Command Objects

Parameter Description

Distribution Mode Current enabled method of clock distribution. If the method chosen is

manual, NCDP is turned off, and vice-versa.

Node stratum level Stratum level of the clock source. Possible levels are 1, 2E, 2, 3E, 3,

4E, or 4.

Max network diameter Maximum network diameter measured in hops.

Hello time interval Time interval between each configuration pdu sent out by a node to

advertise the best clock source in the network. This time interval is

specified in milliseconds in the display.

Holddown time interval Number of milliseconds the switch waits before it transmits the next

configuration PDU.

Topology change time

interval

Time interval for which the topology change detection field in the

configuration pdu bit will be set. Having the topology change

detection option set informs the recipient node that it needs to transmit

configuration pdus out to advertise to its neighbors about recent

topology or root clock changes.

Root Clock Source Clock port from which the node is deriving the clock signal. 255.255

means the node is deriving the clock source from an internal oscillator.

Root Clock Source Reason The reason for the most recent change of a source of network clock.

For a detailed description of the reasons a clock source can change,

refer to Table 2-12 in the Cisco MGX 8850 (PXM45/PXM1E), Cisco

MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Command

Reference, Release 5.

Root Clock Source Status Status of the network’s root clock source.

Root Stratum Level Stratum level of the network’s root clock source. Possible levels are 1,

2E, 2, 3E, 3, 4E, or 4.

Root Priority Priority of the network’s root clock source.

Secondary Clock Source Secondary clock port from which the node is deriving the clock signal.

255.255 means the node is deriving the clock source from an internal

oscillator.

Secondary Clock Source

Reason

The reason for the most recent change of the secondary network clock

source. For a detailed description of the reasons a clock source can

change, refer to Table 2-12 in the Cisco MGX 8850 (PXM45/PXM1E),

Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Command

Reference, Release 5.

Secondary Clock Source

Status

Status of the network’s secondary clock source.

1 ... 399 400 401 ... 642

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