Replacing a TX Matrix Control Plane Cable

The control plane connections between the T640 routers and the TX Matrix router are provided by UTP Category 5 Ethernet cables between the RJ-45 ports on the TX-CIPs in the TX Matrix router and the T-CBs in the T640 routers. The maximum length supported is 100 m. The UTP Category 5 cables do not have to be the same length. The cable wiring is straight-through (not crossover).

Note: If you are replacing a control plane connection in an operational routing matrix, the TX Matrix router and the T640 router controlled through this connection must have redundant host subsystems.

Figure 1: TX Matrix Control Plane Ports on the TX-CIP

1. Removing a TX Matrix Control Plane Cable
2. Installing a TX Matrix Control Plane Cable

Removing a TX Matrix Control Plane Cable

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Press the tab on the cable connector installed in the TX-CIP port and pull the connector straight out of the port. Ethernet Cable Connector shows the connector. The control plane ports on the TX-CIP are labeled LCC0 through LCC3.

   Note: The RJ-45 ports labeled LCC4 through LCC7 on a TX-CIP are reserved for future use.

3. Disconnect the cable plugged into the port labeled CIP on the corresponding T-CB.

Installing a TX Matrix Control Plane Cable

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Plug one end of the replacement cable into the appropriate TX-CIP port.
3. Plug the other end of the cable into the port labeled CIP on the corresponding T-CB.
4. Dress the cable appropriately.