Lucent Technologies CAJUN M770, User Manual

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Chapter 14 Managing the LECS
Cajun M770 ATM Switch User’s Guide 163
Note: Changing the LECS location may disrupt all LANE connections and any
change will take effect immediately.
Setting priority level for a resilient LECS
You can rig the election of a resilient LECS, by placing it on a higher priority level
than other LECSes. The higher the priority assigned to a resilient LECS, the better
the chances of it winning the election. By default all resilient LECSes when created
are assigned a priority of 128.
Lucent recommends that you set the priority of one of the resilient LECS to have a
higher priority than the others. This will ensure that this LECS will be elected as the
active LECS.
You can stop a resilient LECS being elected by assigning it a priority of zero. This
enables you to configure the LANE services on a switch that is hosting a resilient
LECS, without the possibility of the LECS becoming active.
Changing the priority of a LECS will trigger a new election process and the LECS
with the highest priority will be elected. If two or more LECSes have the same
priority level then the LECS with the higher ATM address will be elected.
Note:
If the network is recovering from a network failure, the election process is
different. The resilient LECS with the highest up-time will remain the active LECS.
This is to minimize network disruption.
To change the priority of the local LECS, use the
lane lecs priority
command:
Command:
M15-155s8:/>lane lecs priority <priority>
Parameters:
<priority>
Indicates the level of priority assigned to the resilient
LECS during the election process.
0 - LECS candidate is not available for election.
1 - Lowest priority that can be assigned to a LECS.
128 - Default priority assigned to a LECS.
255 - Highest priority that can be assigned to a LECS.
This will guarantee that the LECS will be elected.