E1000-2-G Faceplate And Block Diagram; Figure - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

5.5 E1000-2-G Card

Figure 5-4

E1000-2-G
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The E1000-2-G Gigabit Ethernet card provides high-throughput, low-latency packet switching 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 Ethernet 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 configurations.
Cisco ONS 15454 Reference Manual, R8.5
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E1000-2-G Faceplate and Block Diagram

Gigabit Ethernet
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A/D Mux
Ethernet
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FPGA
Buffer Control
memory memory
Chapter 5 Ethernet Cards
DRAM CPU
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