Alcatel-Lucent 9500 MXC User Manual page 148

Chapter 3. 9500 MXC Nodes
Vol. II-3-54
• Layer 2 link aggregation (802.3ad), and layer 1 link aggregation;
• Flow control through 802.3x pause-frame option;
• Jumbo frames to 9600 bytes;
• Comprehensive RMON and performance indicators;
• Compatibility with the DAC ES for Nx1.5 Mbps and Nx2 Mbps traffic
selections (from SW release 3.6).
DAC GE Plug-in
Figure 3-34.
Figure 3-35 illustrates the DAC GE basic operational blocks. Three RJ-45 10/
100/1000Base-T ports and one SFP (Small Form-factor Pluggable) Optical
1000Base-X port connect to an Ethernet switch, which provides the bridge/
switch and queueing functions between the ports and two transport channels, C1
and C2. The gate array (FPGA) provides signal framing and the interface to the
backplane bus, which provides the channel interconnection to a link (RAC or
DAC 155oM). The backplane bus can be configured for E1, DS1 or STM1/OC3
operation. With E1 or DS1 selections Ethernet traffic can be configured to ride
side by side with PDH E1/DS1 traffic, or the full capacity of a link can be
dedicated to Ethernet. The DAC GE MAC address register supports 8192 entries.
• The switch analyzes the incoming Ethernet frames for source and destination
MAC addresses and determines the output port/channel over which the frames
will be delivered.
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