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Configuring LAN Emulation Services 4-13
Since an LECS may be located on the same switch as the primary LES, if
the primary LECS (primary LECS is the one on the top of the priority list)
fails along with the primary LES, its database cannot be altered by the
“LANE Monitor” to point to the backup LES when the LES failure
condition happens. This LECS’s database still points to the primary LES
while all the other LECSs point to the backup LES. Under these conditions
if new LECs (LANE Client) become active, they could join the primary LES
of the ELAN that is currently being served by the backup LES. This would
result in a split ELAN. This condition must be carefully monitored and
fixed manually by first fixing the LECS database (using the Manual LANE
redundancy Assistant) and then resetting the new LECs.
Manually Modifying LANE Redundancy
You can modify the database of an LECS that was not automatically
changed by the LANE monitor using the Manual LANE redundancy
Configuration Assistant.
To modify the database:
1 From the LAN Emulation window or Topology Browser select the
Backbone and Services icon or branch.
2 Select the Zoom icon or Zoom Physical from the ATMvLAN menu.
3 Select the LECS which contains the database you want to modify.
4 Select the Configure icon. The Manual LANE Redundancy window is
displayed. See Figure 4-4.
Figure 4-4 The Backbone and Services Configuration Assistant/Manual LANE
Redundancy