Cisco 10720 - Internet Router Installation And Configuration Manual page 30

Physical and Functional Overview
Hardware Field Replaceable Units
The Cisco 10720 Internet Router provides dedicated slots for the uplink card and the access card. The
card cage is integrated into a rigid metal frame. The Cisco 10720 Internet Router field replaceable units
are presented in the following sections:
•
•
•
•
•
•
Uplink Cards
The uplink cards are available with one of the following:
•
•
•
There is one slot for an uplink card in the chassis. The cards fit the upper slot of the router chassis. See
Figure 1-3
For more information about the uplink cards, versions of the uplink cards, and uplink card cabling, refer
to the
Figure 1-3
10720-SR-LC
The cable connector is a special LC optical connector. When using the card for DPT connections, the
left port is the spatial reuse protocol (SRP) side A and the right port is SRP side B. When POS
connections are made, the two ports are independent of each other. Each port consists of transmit (TX)
and receive (RX). For additional information, see the
page
Cisco 10720 Internet Router Installation and Configuration Guide
1-4
Uplink Cards, page 1-4
Access Card, page 1-6
Redundant Power Supply, page 1-6
Fan Assembly, page 1-7
Mounts, page 1-7
Cable Management, page 1-8
One OC-48c/STM16c DPT uplink fiber-optic port or two POS uplink fiber-optic ports
Two RPR/SRP uplink fiber-optic ports supporting SFP modules
Console and serial (AUX) ports only
for an example of a typical DPT uplink card.
Cisco 10720 Internet Router Uplink Cards Installation and Configuration
DPT Uplink Card (Front View)
A
TX RX
3-11. The console/auxiliary card has console and serial (AUX) ports only.
B
TX RX
RESET
CONSOLE AUX
"SONET Distance Limitations" section on
Chapter 1 Product Overview
publication.
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