Lucent Technologies M770 - Manual (Page 62)

52 Cajun M770 ATM Switch Manager User’s Guide
Discovery The method used for determining the address of the
LES. Possible methods are:
•
Auto - The address of the LES is discovered using
the proprietary ’automatic LES address
determination method’.
• Manual - The LES’s address is manually entered.
Early Packet Discard
Threshold There are two packet discard thresholds for each
option card, called Early Packet Discard (EPD) and
Partial Packet Discard (PPD). By default, both
thresholds have a default set limit and are enabled.
The Cajun M770 ATM Device uses EPD to discard
entire AAL5 frames for ABR and UBR traffic (rather
than random cells from different frames), when it
determines that it is about to become congested. The
Cajun M770 ATM Device passes through the last cell
of each AAL5 frame so that end stations are aware that
a discard has taken place. You can configure a
threshold at which the EPD will be invoked. The
threshold is a percentage of the overall shared buffer
space.
ELAN Name The name of the ELAN.
ELAN Type The type of ELAN. Possible types are:
• Ethernet
• Token Ring
ESI (MAC) Address The End Station Identifier (ESI) is the MAC address
of the master agent. The ATM address of the switch
consists of the ATM prefix and the ESI.
Faults A list of faults.
Group LES Address Unique 20 byte address to be used when the LEC to
LES assignment is by Group.
Interface Address The ATM address of the Cajun M770 ATM module
to which the port belongs.
Last Active The time since this resilient LECS was last elected as
active.
Field Name Description