Lucent Technologies CAJUN M770, User Manual

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Chapter 2 Getting Started
Cajun M770 ATM Switch User’s Guide 13
Setting up LAN Emulation
Each module in the Cajun M770 ATM Switch can host one LECS and multiple
combined LES and BUS. This means that on one switch, there can be several
resilient LECS, and for one ELAN, several distributed LES. The Cajun M770 ATM
Switch LES does not have to reside in the same device as the LECS. The module
that is elected as the Master will host the Management LEC.
The following steps should be performed for each M770 ATM Switch module to
ensure correct LANE configuration:
1 Determine what type of LECS is to be hosted on this module (local or remote).
By default the module is configured to seek a remote LECS at WKA (Well-
Known Address).
For information about the different types of LECS that can be hosted on the
M770 ATM Switch, see Chapter 14, Managing the LECS.
2 If you are using resilient LECS, configure one of the LECS to have the highest
priority.
For information about changing a LECS priority on the M770 ATM Switch, see
Chapter 14, Managing the LECS.
3 If the M770 ATM Switch is to host a local LECS then you will need to consider
the ELANs that the LECS will coordinate.
Note: To ensure that a standby LECS can smoothly take over the running of the
network, should the active elected LECS fail, it must be configured with the same
LANE services information as the active elected LECS.
There is no checking of database consistency between modules that are hosting the
resilient LECS.
4 Determine what ELANs this switch will host and create LESes to host the
required ELANs.
For information about configuring local ELANs, see Chapter 16 Managing an
ELAN.
For information about configuring the local LES, see Chapter 15 Managing the
LES/BUS.
— By default the M770 ATM Switch hosts the following default ELANs:
ELAN name ELAN LES name
Default Ethernet ELAN default default