Installation guide

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Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 3 Installing the IGX
Making External Clock Connections
Making External Clock Connections
The DB-15 connector labeled Ext Clocks on the faceplate of the SCM connects two external sources for
a high-stability clock (primary and redundant). One of the trunk or circuit line inputs can also serve as
a source of timing for the node. If you do not select a clock source, the node uses the internal IGX clock
as the clock source.
Two separate clock inputs exist, and can be used simultaneously on the IGX. They are labelled
External-1 and External-2. Both clock inputs require an EIA/TIA 422 balanced square wave signal at
either 1.544 or 2.048 MB per second.
Note Standard DS1 or E1 BITS clock sources using AMI bipolar pulse stream signals are not compatible with
IGX external clock inputs.
For a list of connector pin assignments, see the “External Clock Input Cabling” section on page A-49.
Attaching Peripherals
A network must have at least one control terminal (or a Cisco WAN Manager workstation if you want
to collect statistics) attached, along with a network printer for printing out the status of the system. The
SCM has three ports for attaching peripherals to an IGX node. These ports are Control Terminal, LAN
AUI, and AUX port.
For the Cisco TAC to perform remote troubleshooting, a modem must connect to the network. This is a
requirement for all Cisco service plans. The following sections provide procedures for attaching
peripherals to the IGX node. Be sure to read the manufacturers’ literature to ensure that the equipment
is ready before attempting to connect it to the IGX node.
Connecting a Single Network Management Station
To use network management, at least one node in a Cisco WAN switching network running
Release 7.2 or higher software must have a Cisco WAN Manager workstation connected. The
workstation connects to the AUI Ethernet LAN port on the SCM.
The Cisco WAN Manager workstation can be used to configure and maintain all nodes in a network. For
instructions on using the Cisco WAN Manager workstation, see the Cisco StrataView Plus Operations
Guide.
If only a single NMS station is connected and the network is relatively small, you can use a serial
EIA/TIA232 port—the Control Terminal port.
The “Network Management Terminal” section on page A-21 lists the control terminals supported by the
IGX 8410 node and the configuration settings. Appendix A, “General IGX 8410 Switch Specifications,”
has the pin assignments for the IGX 8410 control terminal port.
Attach the control terminal to the SCM. (See Figure 3-17.)
Step 1 From the back of the cabinet, run the control terminal EIA/TIA-232/V.24 cable through the opening at
the bottom and up to the SCM card in back slot 1.
Step 2 Locate the control terminal connector on the SCM and attach the control terminal EIA/TIA-232/V.24
cable to it.