Avaya M770 - page 211

Chapter 14 Managing the LECS
Avaya M770 ATM Switch User’s Guide 191
Changing the location of the LECS
You can configure the LECS in a M770 ATM Switch to be either local or remote. If
you configure a local LECS then you can specify it to be advertised as either a
simple LECS or a resilient LECS.
If you do not specify the type of local LECS, then by default a resilient LECS is
created.
Local simple LECS
When creating or changing to a local LECS:
• If a local LECS does not already exist on the switch then a local LECS is created.
• If a resilient LECS exists, then it is made simple.
Local resilient LECS
When creating or changing to a resilient LECS:
• If a local LECS does not already exist on the switch then a resilient LECS is
created.
Note, when you create a resilient LECS it will join the election process and it is
this election process that will elect the “active LECS”.
For more information about the election process, see Proprietary resilient LECS
in Chapter 13, LANE Services.
• If a simple LECS exists, then it is made resilient. The address of the LECS is set
as specified. The priority of the LECS is set to the default of 128.
Note: You must also ensure that all resilient LECS are configured with the same
LANE services information. Should the active LECS fail, a newly elected active
LECS can smoothly take over the running of the network.
No checking of database consistency between LECS is done by the switches.
Note: Changing the LECS location may disrupt all LANE connections and any
change will take effect immediately.