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4-10 CHAPTER 4: NETWORK CONFIGURATION TASKS
4 The Network Management Station should have direct access to at least
one LECS in the network, when an ELAN fails.
5 Do not use too many primary LESs on a single switch. Distribute the LESs
across the backbone.
6 Sixteen is the default number of active LANE Servers (LES) per
CoreBuilder7000 that can be viewed in LAN Emulation maps. You can
change the number of managed LANE servers for all CoreBuilders in the
network by editing the following file:
\TranscendNT\ATMvLAN\runtime\cnf\numcpsrvs.cnf
Change the number in the file to the number of LANE servers used. The
number should be less than or equal to the number of servers in the
CoreBuilder 7000.
If you manually change the LECS database on a CoreBuilder 7000 using
the console terminal interface, the Backbone and Services Configuration
tool may have problems reading the database in the CoreBuilder. If an
error message appears, manually reset the LECS database to the factory
default.
Description of
LES/BUS Redundancy
LAN Emulation Services (LES/BUS/LECS) may be activated on each
CoreBuilder 7000 switch in the network. LAN Emulation Services allow
you to create Emulated LANs (ELANs) on the ATM/Ethernet based
infrastructure. Given that each Emulated LAN is serviced by only one
LES/BUS pair, this could potentially become a point of failure. The LES/BUS
redundancy feature allows you to configure an additional LES/BUS pair
(running elsewhere in the network, on a different CoreBuilder 7000) as a
dynamic/hot backup for the primary LES/BUS pair servicing a particular
ELAN.
The ATM and VLAN Management software also works with non-3Com
device LECs when connected to a 3Com LECS. The LAN Emulation
Configuration Server (LECS) database may be configured with a primary
and backup LAN Emulation Server (LES) for each ELAN. Under normal
circumstances, the LECS serves (returns) the primary LES address when a
LAN Emulation Client (LEC) requests the LES address for an ELAN.
Workaround At the terminal prompt select 1, 2 and 7.
(1) SYS:Platform config
(2) RES:Reset config to factory default
(7) RBO:Reboot