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Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 5 Ethernet Cards
5.5 E1000-2-G Card
Figure 5-4 E1000-2-G Faceplate and Block Diagram
The E1000-2-G Gigabit Ethernet card provides high-throughput, low-latency packet switchi ng of
Ethernet traffic across a SONET network while providing a greater degree of reliability through SONET
self-healing protection services. This enables network operators to provide multiple 1000-Mbps access
drops for high-capacity customer LAN interconnects. It enables efficient transport and co-existence of
traditional TDM traffic with packet-switched data traffic.
Each E1000-2-G card supports standards-based, Layer 2 Etherne t switching between its Ethernet
interfaces and SONET interfaces on the ONS 15454. The IEEE 802.1Q VLAN tag logically isolates
traffic (typically subscribers).
Multiple E-Series Ethernet cards installed in an ONS 15454 can act together as a single switching entity
or as independent single switches supporting a variety of SONET port c onfigurations.
Gigabit Ethernet
PHYS
A/D Mux
Flash DRAM CPU
Buffer
memory
Control
memory
Ethernet
MACs/switch
61878
FPGA BTC
B
a
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E1000-2-G
FAIL
ACT
1
SF
33678 12931
2
RX
TX
RX
TX
ACT/LINK
ACT/LINK