User guide

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Cisco Media Gateway Manager 5.0 User Guide
OL-5461-02
Chapter6 Configuring Hardware
How Do I Configure Cisco MGX 8880 and 8850 Nodes?
6.4.6 Managing Node Clocking
On Cisco MGX 8850 (PXM1E) switches, clock source configuration is done on the PXM1E card and
passed to other nodes over PXM1E lines.
On Cisco MGX 8850 (PXM45) switches, clock source configuration is done on a PXM45 card, and clock
sourcing information is passed to other nodes over AXSM lines.
Cisco MGM supports the manual clock configuration method of network clock synchronization for the
Cisco MGX switches. Manual clock configuration configures both a primary and secondary clock
source, which are distributed throughout the network. The secondary clock source takes over if the
primary clock source fails. You can configure a network setup with one master clock source, and a
secondary to ensure network clock stability.
You can manage three types of node clocking:
• 6.4.6.1 Configuring Global Clocking, page 6-26
• 6.4.6.2 Viewing Available Clock Sources, page 6-27
• 6.4.6.3 Viewing or Creating Manual Clock Sources, page 6-28
6.4.6.1 Configuring Global Clocking
Step 1 From the Domain Explorer window, select the node from the Hierarchy pane and choose
Configuration > MGX 8880/8850 MG > Configuration Center. The Configuration window for the
selected node opens.
Step 2 Click the Clocking tab. The Global Clocking Configuration option appears by default in the Category
drop-down arrow.
Table 6-12 Field Descriptions for the Controllers Table
Field Name Description
Controller ID Unique value for VSI controller (VSI master).
Controller Type Identifies the controller type.
Controller Name Name chosen by the user for the VSI controller.
Controller Shelf
Location
Identifies the location of the controller shelf.
Controller Location Identifies the location of the controller.