Cabletron Systems SmartSwitch 04-0053-01 User Manual

Also see for SmartSwitch 9A100: User guide Upgrade instructions Installation and setup guide

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Cabletron Systems SmartSwitch 04-0053-01 User Manual Manual pdf 24 page image

2-6 SmartSwitch ATM User GuideCreating an Emulated LAN IP Over ATM and LANEacquire the LECS address through ILMI or use the Well Known Address as the address for theLECS. For details on the ATM SmartSwitch automatic addressing scheme for LANE, seeSection 2.2.1.7. As each end device registers with the LES and BUS, messages are sent to the event log of the ATMSmartSwitch containing the LECS. You can check connectivity by pinging between end nodes.Note If configured devices fail to join the ELAN, see Chapter 4, "Routing." Section 4.3.Also, see Chapter 9, "Troubleshooting."Your ELAN is now operational. Additional ELANs can be created in the same way.Note While it is possible for a single ELAN on an ATM SmartSwitch to supportmultiple subnets, in general, switch performance is best (and management easiest)when the “One-subnet-per-ELAN” rule is observed.2.2.1 ATM Addressing for LAN EmulationAll ATM SmartSwitches provide default formats for ATM addresses used by LAN emulation entities (local client,LECS, LES, and BUS). The SmartSwitch 2500 family of ATM switches and the SmartSwitch 6500 use differentmethods for constructing these default addresses.SmartSwitch 2500 Family Default LANE AddressingThe netprefix is constructed from:39 + nine zero bytes + last three bytes of CPU MAC addressFor example, the chassis MAC address = 00:20:14:41:80,thendefault netprefix = 39:00:00:00:00:00:00:00:00:00:14:41:80The local client address is constructed from:netprefix + CPU MAC address with last byte summed with the client number + zero selector byteFor examplenetprefix = 39:00:00:00:00:00:00:00:00:00:14:41:80CPU MAC address = 00:20:D4:14:41:80,client number = 5then,client five’s default ATM address = 39:00:00:00:00:00:00:00:00:00:14:41:80:00:20:D4:14:41:85:00