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Cisco ASR 920 Series Aggregation Services Router Hardware Installation Guide
OL-32751-01
Chapter 1 Cisco ASR 920 Series Aggregation Services Router Overview
Cisco ASR 920 Router Features
GigabitEthernet Copper Ports
Fixed copper GigabitEthernet (GE) interfaces are provided through standard RJ-45 connectors. These
ports support the following features:
•
Standard 10/100/1000Base-T/TX operation with forced or auto-negotiation for speed and duplex.
•
Automatic crossover (auto-MDIX) for straight-through and crossover connections.
•
Pause flow control as defined by the 802.3x standard.
•
Frame size of 9216 bytes.
•
Synchronous ENET operation that provides its recovered receive clock as an input clock source for
the SETS as well as uses the system-wide reference clock to derive its transmit clock.
GE SFP Ports
The GE SFP ports support the following features:
•
100Base-FX and 1000Base-X SFP modules.
•
Digital optical monitoring as specified by the SFP.
•
Any mix of SFPs is supported unless specifically noted.
Note
Only six Smart SFPs are supported on the router.
•
Pause flow control as defined by the 802.3x standard.
•
Frame size of 9216 bytes.
•
Synchronous ENET operation that provides its recovered receive clock as an input clock source for
the SETS as well as uses the system-wide reference clock to derive its transmit clock.
Note
Copper based SFPs and Smart SFPs do not support synchronous ENET operations.
SFP+ Ports
The SFP+ ports support the following features:
•
Digital optical monitoring as specified by the optical transceiver module.
•
Any mix of SFPs is supported unless specifically noted.
•
Pause flow control as defined by the 802.3x standard.
•
Frame size of 9216 bytes.
•
Smart SFPs do not support synchronous ENET operations
