CHAPTE R

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 CiscoONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature
and Configuration Guide. For Ethernet card specifications, see Chapter5, “Eth ernet Cards.” For
Ethernet circuit procedures, refer to the “Create Circuits and Low-Order Tunnels” chapter of the
CiscoONS 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 14-2 3

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 fo r all Ethernet frames (unicast, multicast, and broadcast)
and can be configured to support Jumbo frames (defined as a m aximum 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