IP Over ATM and LANE

Creating an Emulated LAN

The LECS address is constructed from:

netprefix + CPU MAC address + selector byte of 01

For example

netprefix = 39:00:00:00:00:00:00:00:00:00:14:41:89

chassis MAC address = 00:20:D4:14:41:80

then,

default LECS address = 39:00:00:00:00:00:00:00:00:00:14:41:80:00:20:D4:14:41:80:01

The LES and BUS have the same ATM address. LES and BUS addresses are constructed from:

netprefix + CPU MAC address with last byte summed with the ELAN number + numerical value two (2)

For example

netprefix = 39:00:00:00:00:00:00:00:00:00:A3:87:0B

CPU MAC address = 00:20:D4:14:41:80

ELAN number = 3

then,

default LES and BUS addresses = 39:00:00:00:00:00:00:00:00:00:14:41:80:00:20:D4:14:41:83:02

SmartSwitch 6500 Default LANE Addressing

The netprefix is constructed from:

39 + nine zero bytes + last three bytes of chassis MAC address

For example, the chassis MAC address = 00:00:1D:A3:87:0B,

then

default netprefix = 39:00:00:00:00:00:00:00:00:00:A3:87:0B

The local client address is constructed from:

netprefix + CPU MAC address, with last byte summed with the client number + zero selector byte

For example

netprefix = 39:00:00:00:00:00:00:00:00:00:A3:87:0B

chassis MAC address = 00:00:1D:A3:87:0B,

CPU MAC address = 00:20:D4:14:41:80,

client number = 5

then,

client five’s default ATM address = 39:00:00:00:00:00:00:00:00:00:A3:87:0B:00:20:D4:14:41:85:00

SmartSwitch ATM User Guide 2-7

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Cabletron Systems 04-0053-01 manual SmartSwitch 6500 Default Lane Addressing, Lecs address is constructed from