Cabletron Systems 04-0053-01 User Manual

SmartSwitch ATM User Guide   2-7

IP Over ATM and LANE

Creating an Emulated LAN  

The 

 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 

 and 

 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 

 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 

 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