Cisco Systems XR 12406 manual Supplemental Bonding and Grounding Port for Nebs Compliance

Chapter 3 Installing the Cisco XR 12406 Router

Supplemental Bonding and Grounding Connections

•On Cisco XR 12406 routers configured for DC-input operation, the DC PDU is equipped with a DC power connector block with wire-connection terminals for connecting the negative lead (top terminal), the positive lead (middle terminal), and the ground lead (bottom terminal). This is a safety feature.

Note The Cisco XR 12406 router grounding architecture conforms to the DC-I (DC-isolated) method of grounding as described in Telcordia GR-1089-CORE. A DC-I architecture means that there is no connection between the DC return terminal and the frame ground. DC return and frame ground are isolated from one another at the router.

If the router is installed in a NEBS environment, we strongly recommend that you connect the central office ground system or interior equipment grounding system to the supplemental bonding and grounding point on the router chassis. This grounding point consists of threaded inserts is located on the side of the chassis near the back of the chassis (Figure 3-4). It is also referred to as the NEBS bonding and grounding receptacle, and is intended to satisfy the Telcordia NEBS requirements for supplemental bonding and grounding connections.

Figure 3-4 Supplemental Bonding and Grounding Port for NEBS

Compliance

GIGABIT ROUTE PROCESSOR

CISCO 12000

GIGABIT SWITCH ROUTER

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	Cisco XR 12406 Router Installation Guide
3-10	OL-13831-01