Command or Action
Purpose
Step 3
Switch# copy running-config startup-config
Saves the configuration value permanently.
Configuring the LECS Database
The LECS database contains LANE configuration information, including ELAN name-to-LES/BUS ATM
address mappings, LEC address-to-ELAN name mappings, and the name of the default ELAN, if specified.
You must configure at least one LECS database in the LANE network.
When configuring the LECS database, remember the following guidelines:
•
You can configure redundant LECSs. Redundant LECSs should be configured on different devices in
the LANE network. If you configure more than one LECS, make sure that all databases with the same
name are identical.
•
You can specify one default ELAN in the database. The LECS assigns any client that does not request
a specific ELAN to the default ELAN.
•
ELANs are either restricted or unrestricted. The LECS assigns a client to an unrestricted ELAN if the
client specifies that particular ELAN in its configuration. However, the LECS only assigns a client to a
restricted ELAN if the client is specified in the LECS’s database as belonging to that ELAN. The
default ELAN should have unrestricted membership.
•
If you are configuring fault tolerance, you can have any number of servers per ELAN. Priority is
determined by entry order; the first entry has the highest priority unless you override it with the index
option.
When setting up the LECS database remember that the following are requirements when configuring LECs:
•
The VLAN name must match the ELAN name.
•
The ring number defined when configuring the VLAN must match the local segment ID.
The set vlan interface configuration command assumes that any ring number you enter is in hexadecimal.
Therefore, 12 is stored as the hexadecimal value 0x12. The name elan_name local-seg-id
segment_numberLANE database configuration command assumes that any value you enter for the local-
seg-id is in decimal unless you enter it explicitly in hexadecimal. For example, to define a TrCRF with a
ring number of 12 you could enter the set vlan 12 name crf12 type trcrf ring 12 parent 100 interface
configuration command or the set vlan 12 name crf12 type trcrf ring 0x12 parent 100 interface
configuration command.
When defining a corresponding LEC, you could enter the name crf12 local-seg-id 0x12 or name crf12
local-seg-id 18 LANE database configuration command because 18 is the decimal equivalent of 0x12.
To set up the database, complete the tasks in the following sections as appropriate for your ELAN plan and
scenario:
•
Setting Up the Database for the Default ELAN, page 12
•
Setting Up the Database for Unrestricted-Membership ELANs, page 14
•
Setting Up the Database for Restricted-Membership ELANs, page 15
Setting Up the Database for the Default ELAN
When you configure a Catalyst 5000 series switch ATM module as the LECS for one default ELAN, you
need to provide the following information:
Configuring the LECS Database
Setting Up the Database for the Default ELAN
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