Fore Systems forerunner series, Руководство по настройке

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ForeRunner ATM Switch Network Configuration Manual
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Con
figurin
g an
Em
ul
ated
LAN
Configuring an Emulated LAN
3.6.1 Configuring an LECS Configuration Database File
The LECS uses a text configuration file to contain the configuration information needed by
LECs that wish to participate in an ELAN. The LECS configuration file may be built and
edited using a text editor such as
vi
or
emacs
.
NOTE
ForeThought VLAN Manager, a product available
separately from FORE Systems, greatly
simplifies the administration of ELANs. Its
graphical user interface controls the content of
the LECS configuration file transparently to the
user. For more information, please refer to the
ForeView VLAN Manager User’s Manual.
3.6.1.1 Before You Begin
Before building or modifying the LECS configuration file, you should first determine the
topology of the ELAN or ELANs that you want to administer. You must supply the following
information when building or editing the LECS configuration file:
• Provide the name of each ELAN (
engineering
,
marketing
, etc.).
• Provide the LAN type (Ethernet or Token Ring) for each ELAN.
• Provide the MTU size for each ELAN.
• Provide the ATM address of the LES for each ELAN. If you are using DLE, this
address must be the anycast address for the DLE peer servers in each ELAN. Be
sure to choose a distinct anycast address for each ELAN in the network. It must be
unique within the first 19 bytes.
• Provide the address of each LEC that may participate in each ELAN.
• Provide the MPOA control parameters if you wish to run MPOA.
• If you wish LECs to use a default ELAN, the default LES information must also be
included.
• Provide various other configurable parameters.
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.