Chapter 5 Ethernet Cards
5.2 E100T-G Card
The ports autoconfigure to operate at either half or full duplex and determine whether to enable or disable flow control. You can also configure Ethernet ports manually. Figure 5-1shows the faceplate and a block diagram of the card.
Figure 5-1 E100T-G Faceplate and Block Diagram
E100T-G
FAIL
ACT
SF
1
2
3
4
5
6
7
8
9
10
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| | Flash | DRAM | CPU | |
| A/D Mux | | | B |
| | | | | a |
| | | | | c |
| | | | | k |
| | | | | p |
| | | | | l |
10/100 | Ethernet | | | | a |
MACs/switch | | | n |
PHYS | | |
| FPGA | BTC | e |
| Buffer | Control | | | |
| memory | memory | | | 61877 |
| | | | |
12
The E100T-G Ethernet card provides high-throughput, low-latency packet switching of Ethernet traffic across a SDH network while providing a greater degree of reliability through SDH self-healing protection services. This Ethernet capability enables network operators to provide multiple 10/100-Mbps access drops for high-capacity customer LAN interconnects, Internet traffic, and cable modem traffic aggregation. It enables the efficient transport and co-existence of traditional TDM traffic with packet-switched data traffic.
Each E100T-G card supports standards-based, wire-speed, Layer 2 Ethernet switching between its Ethernet interfaces. The IEEE 802.1Q tag logically isolates traffic (typically subscribers). IEEE 802.1Q also supports multiple classes of service.
Cisco ONS 15454 SDH Reference Manual, R5.0
