Physical Description Of The Switch Modules; Figure 1-2. Etherspeedii 10/100Base-T 20-Port Switch Module - Nortel Centillion EtherSpeed II Using Manual

Using the Centillion EtherSpeedII Switch Modules
MPOA is the ATM Forum standard that specifies a method to efficiently
transport intersubnet unicast data in a LAN emulation (LANE) environment.
MPOA uses LANE and Next Hop Resolution Protocol (NHRP) processes to
allow direct shortcut virtual channel connections (VCCs) to be established for
intersubnet communication without requiring passage through a router. The
intrasubnet communication continues to be supported over LANE. For IP,
Nortel Networks has adopted MPOA as the standard to implement layer 3
switching in an ATM network.
• Improved performance in segmentation and reassembly (SAR) performance
to 3.2 gigabits per second (Gb/s).
• MultiLink Trunking (MLT)

Physical Description of the Switch Modules

The EtherSpeedII 10/100BASE-T switch module
printed circuit board with a metal module faceplate. The switch module includes
captive retaining screws and inserter/extractor levers on the top and bottom of the
front panel.
Captive retaining
Inserter/extractor
20 10/100BASE-T ports (RJ-45)
Figure 1-2.
1-4
LEDs
screws
levers
EtherSpeedII 10/100BASE-T 20-Port Switch Module
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(Figure 1-2) consists of a
Backplane connector
Printed circuit
board
9454FA
207344-B