GE SFP Ports
The GE SFP ports support the following features:
• 100Base-FX and 1000Base-X SFP modules.
• Copper SFP modules
• Digital optical monitoring as specified by the SFP.
• Any mix of SFPs is supported unless specifically noted.
• 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.
Copper based SFPs do not support synchronous ENET operations.
Note
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.
External Interfaces
The Cisco ASR 920-20SZ-M Router has these external physical interfaces on the front panel:
Network Interfaces
The network interfaces are provided through fixed ports.
• GE SFP ports—supports 100/1000 modes
• GE copper ports—supports 10/100/1000 operation
• 10GE SFP+—supports 10G mode
Network Timing Interfaces
• BITS input or output—The BITS interfaces support clock recovery from either a T1 at 1.544 MHz or an
E1 at 2.048 MHz, configurable by software. BITS interface is provided through a standard RJ-48 connector
on the front panel.
Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide
11
Overview
GE SFP Ports
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