Cisco ONS 15454 SDH Specifications Page 189

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
E100T-G Card
Figure 3-43 E100T-G faceplate
The E100T-G Ethernet card provides high-throughput, low-latency packet switching of Ethernet traffic
across an SDH/SONET network while providing a greater degree of reliability through SDH/SONET
“self-healing” protection services. This Ethernet capability enables network operators to provide
multiple 10/100 MBits/s (Mbps) access drops for high-capacity customer LAN interconnects, Internet
traffic, and cable modem traffic aggregation. Efficient transport and co-existence of traditional TDM
traffic with packet-switched data traffic are provided.
The E100T-G eliminates the need for external aggregation equipment such as Ethernet switches, remote
headends or distributed points of presence (POPs).
Each E100T-G card supports standards-based, wire-speed, layer 2 Ethernet switching between its
Ethernet ports. The 802.1Q tag and port-based VLANs logically isolate traffic (typically subscribers).
Priority queuing is also supported to provide multiple classes of service.
You can install the E100T-G card in any multispeed slot. Multiple Ethernet cards installed in an ONS
15454 SDH act as a single switch supporting a variety of SDH/SONET port configurations. You can
create logical SDH/SONET ports by provisioning a number of VC-4 channels to the packet switch entity
within the ADM. Logical ports can be created with a bandwidth granularity of VC-4. The ONS 15454
SDH supports VC-4-1c, VC-4-2c, or VC-4-4c signal levels.
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