1-Port 10-Gigabit Ethernet Spa Overview; Figure 2-7 Straight-Through Cable Pinout, Rj-45 Connection To A Hub Or Repeater; Figure 2-8 Crossover Cable Pinout, Rj-45 Connections Between Routers - Cisco 12000 - Series Chassis Modular Expansion Base Hardware Installation Manual

1-Port 10-Gigabit Ethernet SPA Overview

Referring to the RJ-45 pinout in
Note
the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode termination reduces the
contributions to electromagnetic interference (EMI) and susceptibility to common-mode sources. Wire
pairs 4/5 and 7/8 are actively terminated in the RJ-45 port circuitry in the 8-Port FastEthernet SPA.
The 8-Port FastEthernet SPA supports automatic MDI/MDIX crossover at all speeds of operation
allowing the SPA to work with straight-through and crossover Ethernet cables. Depending on your RJ-45
interface cabling requirements, use the pinouts in
Figure 2-7
Hub or LAN switch
Figure 2-8
Router
3 TxD+
6 TxD–
1 RxD+
2 RxD–

1-Port 10-Gigabit Ethernet SPA Overview

The following sections describe the 1-Port 10-Gigabit Ethernet SPA:
•
•
Cisco 12000 Series Router SIP and SPA Hardware Installation Guide
2-12
Straight-Through Cable Pinout, RJ-45 Connection to a Hub or Repeater
Ethernet port
3 TxD+ 3 RxD+
6 TxD– 6 RxD–
1 RxD+ 1 TxD+
2 RxD– 2 TxD–
Crossover Cable Pinout, RJ-45 Connections Between Routers
Router
3 TxD+
6 TxD–
1 RxD+
2 RxD–
1-Port 10-Gigabit Ethernet SPA LEDs, page 2-13
1-Port 10-Gigabit Ethernet SPA XFP Optical Transceiver Modules, Connectors, and Cables, page
2-13
Chapter 2 Overview: Cisco 12000 Series Router Shared Port Adapters
Table 2-10, proper common-mode line terminations should be used for
Figure 2-7 and Figure 2-8.
Release 12.0(32)SY1, OL-8831-01, Rev. G6, July 19, 2007