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CHAPTER
REVIEW DRAFT—CISCO CONFIDENTIAL
14-1
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
14
Ethernet Operation
The Cisco ONS 15454 SDH integrates Ethernet into an SDH time-division multiplexing (TDM)
platform. The ONS 15454 SDH supports E-Series, G-Series, and ML-Series Ethernet cards. This chapter
covers the operation of the E-Series and G-Series Ethernet cards. For information on the ML-Series
cards, refer to the Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature
and Configuration Guide. For Ethernet card specifications, see Chapter 5, “Ethernet Cards.” For
Ethernet circuit procedures, refer to the “Create Circuits and Low-Order Tunnels” chapter of the
Cisco ONS 15454 SDH Procedure Guide.
Chapter topics include:
• 14.1 G-Series Application, page 14-1
• 14.2 G-Series Gigabit Ethernet Transponder Mode, page 14-5
• 14.3 E-Series Application, page 14-10
• 14.4 G-Series Circuit Configurations, page 14-19
• 14.5 E-Series Circuit Configurations, page 14-20
• 14.6 Remote Monitoring Specification Alarm Thresholds, page 14-23
14.1 G-Series Application
The G-Series cards (G1000-4/G1K-4) reliably transport Ethernet and IP data across an SDH backbone.
The G-Series cards map up to four Gigabit Ethernet interfaces onto an SDH transport network and
provide scalable and provisionable transport bandwidth at signal levels up to VC4-16C per card. The
G-Series cards provide line rate forwarding for all Ethernet frames (unicast, multicast, and broadcast)
and can be configured to support Jumbo frames (defined as a maximum of 10,000 bytes). The G-Series
cards incorporate features optimized for carrier-class applications such as:
• High Availability (including hitless [< 50 ms] performance under software upgrades and all types of
SONET/SDH equipment protection switches)
• Hitless reprovisioning
• Support of Gigabit Ethernet traffic at full line rate
• Serviceability options including enhanced port states, terminal and facility loopback, and J1 path
trace
• SDH-style alarm support
• Ethernet performance monitoring (PM) and remote monitoring (RMON) functions