Connecting an Offline T640 Router to the TX Matrix Router

After you replace the CBs and SIBs with T-CBs and T640-SIBs, you connect the T640 router to the TX Matrix router, including its redundant control and switching planes.

1. Connecting the Control Planes Between the TX-CIPs in the TX Matrix Router and the T-CBs in a T640 Router
2. Connecting the Switching Planes Between the TX-SIBs in the TX Matrix Router and the T640-SIBs in a T640 Router

Connecting the Control Planes Between the TX-CIPs in the TX Matrix Router and the T-CBs in a T640 Router

Note: The connections between the TX-CIPs and the T-CBs are proprietary Ethernet connections. Do not attempt to connect these components through a switch or hub.

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. If the receivers of the five TX-SIB adapters you are connecting are enabled, disable them.

   To disable the TX-SIB adapter receivers, issue the following CLI command:

   user@host> request chassis sib slot slot-number stop-receiver interface-number scc

   The slot number can be from 0 through 4 and corresponds to the TX-SIB chassis slot. The interface number can be 0 through 3 and corresponds to the TX-SIB adapters labeled LCC0 through LCC3.

3. Plug one end of a UTP Category 5 cable into the appropriate RJ-45 port on TX-CIP-0. The cable wiring is straight-through (not crossover).

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

4. Plug the other end of the cable into the port labeled CIP on T-CB-0. Dress the cable appropriately.

   Note: The RJ-45 port labeled AUX on a T-CB is reserved for future use.

5. Plug one end of a UTP Category 5 cable into the appropriate RJ-45 port on TX-CIP-1.
6. Plug the other end of the cable into the port labeled CIP on T-CB-1. Dress the cable appropriately.

Connecting the Switching Planes Between the TX-SIBs in the TX Matrix Router and the T640-SIBs in a T640 Router

To complete the connection of the switching planes, you connect the five fiber-optic array cables to the five T640-SIBs in the T640 router. The fiber-optic array cables should already be routed between the TX Matrix router and the T640 router, tested, and connected to the TX Matrix router. To connect the fiber-optic array cables to the T640 router (see Fiber-Optic Array Cable Connections between TX-SIBs and T640-SIBs for the T640-SIB adapter connections):

Warning: Do not look directly into a fiber-optic array adapter or a connector at the end of a fiber-optic array cable attached to an adapter. The fiber optics emit laser light that can damage your eyes.

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. Using the labels you attached to the ends of the fiber-optic array cables, identify the cable that plugs into T640-SIB-0.
3. If applicable, remove the protective tape covering the T640-SIB fiber-optic array adapter.

   Caution: While you install the TX Matrix router or replace a fiber-optic array cable, small deposits of oil, dust, and debris can enter the TX-SIB and T640-SIB fiber-optic array adapters, the fiber-optic array cable connectors, and the loopback connectors and adapters. We recommend that you clean the optics in these components, as well as the loopback connector and adapter dust covers, immediately before connecting them. For cleaning instructions, see Cleaning the TX Matrix and T640 Fiber-Optic Components Overview.

4. Remove the dust cover from the fiber-optic array cable connector by loosening the thumbscrew and captive screw on the connector. (Use the supplied small slotted screwdriver to loosen the captive screw.) Store the dust cover in a dust-free resealable plastic bag.
5. With the fiber-optic array cable extending toward the left side of the chassis (as you face the rear), align the cable connector with the T640-SIB-0 adapter and carefully press it into the adapter until it stops. The cable connector and adapter are keyed to ensure proper mating.

   Note: The optics in a fiber-optic array adapter are spring loaded, so you must continue to apply force to a fiber-optic array cable connector or loopback connector while securing it to a TX-SIB or T640-SIB adapter.

6. Partially tighten the thumbscrew and captive screw on the fiber-optic array cable connector. (Use the supplied small slotted screwdriver to tighten the captive screw.) Alternate between the thumbscrew and captive screw until the cable connector is secured to the adapter.
7. Repeat Step 2 through Step 6 for the four remaining fiber-optic array cables that connect to T640-SIB-1 through T640-SIB-4.

Figure 1 shows the control and switching planes connections between the TX Matrix router and a T640 router.

Note: Because the T640-SIB adapters and fiber-optic array cable connectors extend beyond the rear of the chassis, you need a minimum of 4 inches of clearance in the rear of a T640 router installed in a cabinet.

Figure 1: Switching Planes Connections