Fore Systems forerunner series, Configuration Manual

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ForeRunner ATM Switch Network Configuration Manual
3 - 35
Con
figurin
g an
Em
ul
ated
LAN
Configuring an Emulated LAN
3.6.2 Sample LECS Configuration File
CAUTION
Do not attempt to edit an existing functional
LECS configuration file without first making a
backup copy of the file. Incorrect modification of
the configuration file could result in loss of
communication between one or more members
of a defined ELAN.
NOTE
For a detailed discussion of how to configure an
LECS configuration file similar to the one given
in this section, please refer to Section 3.6.1.
The sample LECS configuration file shown at the end of this section in Figure 3.19 and
Figure 3.20 defines three ELANs:
• default
• engineering
• marketing
The
Match.Ordering
statement specifies the ELAN names in the order that prospective cli-
ents will attempt to match. The default configuration parameters are shown with their default
values. These values apply to all ELANs in this configuration file, unless overridden for a par-
ticular ELAN or client.
ELAN
default
is configured to accept any client that wishes to join. The ATM address of the
default
LES is listed in the
default.Address
statement. If DLE is being configured for
ELAN
default
, then this address must be the anycast address that allows the clients to reach
any of the DLE peer servers for ELAN
default
.
NOTE
Be sure to choose a distinct anycast address for
each ELAN in the network. It must be unique
within the first 19 bytes.
ELAN
engineering
has overridden the default
Maximum_Frame_Size
with a new size of
4544 bytes. Consequently, this frame size applies only to traffic on the
engineering
ELAN.
The
default
and
marketing
ELANs continue to use the default frame size of 1516 bytes.
Two LECs, whose MAC addresses are
002048080011
and
0020481020ef
, are identified as
acceptable clients for the
engineering
and
marketing
ELANs.