Technical information

Cuda 12000 IP Access Switch CudaView Administration Guide
Configuring for Backplane Clock Sources 295
Configuring for Backplane Clock Sources
The Cuda 12000 IP Access Switch backplane has a primary clock (A) and a
secondary clock (B). For each of these clocks, you can configure one of the
following clock sources:
■ External BITS-A clock source
■ External BITS-B clock source
■ External Packet-Over-SONET (POS) clock source
■ Internal Stratum-3 oscillator clock source on the management module
If you do not configure any clock sources, each DOCSIS/EuroDOCSIS module
uses its own clock.
If you are using a BITS-A or BITS-B external clock source, make sure that the
Cuda 12000 is connected to the appropriate clock sources via the BITS-A or
BITS-B external clock connectors. Refer to the Cuda 12000 IP Access Switch
Installation Guide for more information on these connectors.
If you are using a POS module as the clock source, make sure that the
interface on the POS module has been configured to receive clocking from
the other (remote) side of the POS link. Refer to Chapter 10, “Packet Over
SONET Administration”, for more information on configuring POS interfaces.
A typical configuration would be as follows:
■ Primary clock configured to use a BITS-A or BITS-B external clock source
■ Secondary clock configured to use the internal Stratum-3 oscillator clock
source.
Before You Begin
Before you begin, follow this procedure:
1. navigate to Network Browser > GroupName > ChassisName > Cuda
Chassis Manager > Fault Management > Aux Devices.
2. Click the Backplane Clocks tab.