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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-03
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers Shared Port Adapters
4-Port and 8-Port Fast Ethernet SPA Overview
4-Port and 8-Port Fast Ethernet SPA Cables, Connectors, and Pinouts
The interface connectors on the 4-Port and 8-Port Fast Ethernet SPA are four or eight individual RJ-45
receptacles. You can use all interface connectors simultaneously. Each connection supports IEEE 802.3
and Ethernet 10/100BASE-T interfaces compliant with appropriate standards. Cisco does not supply
Category 5 unshielded twisted pair (UTP) RJ-45 cables; these cables are available commercially.
lists the pinouts and signals for the RJ-45 connector.
Figure 3-11
RJ-45 Connections, Plug, and Receptacle
Note
Referring to the RJ-45 pinout in
, proper common-mode line terminations should be used for
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 4-Port and 8-Port Fast Ethernet
SPA.
Table 3-11
4-Port and 8-Port Fast Ethernet SPA LEDs
LED Label
Color
State
Meaning
Port Number
A/L (0, 1, 2, 3,
4, 5, 6 or 7)
1
1. In this case, port number refers to the numbered LEDs on the 8-Port Fast Ethernet SPA (0, 1, 2, 3, 4, 5, 6, or 7). Each LED
number on the 8-Port Fast Ethernet SPA references a port on the SPA.
Off
Off
Port is not enabled.
Green
On
Port is enabled and the link is up.
Amber
On
Port is enabled and the link is down.
STATUS
Off
Off
SPA power is off.
Green
On
SPA is ready and operational.
Amber
On
SPA power is on and good, and the SPA is being
configured.
Table 3-12
RJ-45 Connector Pinout
Pin
Description
1
Transmit data + (TxD+)
2
TxD–
3
Receive data + (RxD+)
6
RxD–
205060
8 7 6 5 4 3 2 1
RJ-45 connector