Section 4, User Interface Guide ATLAS 550 System Manual
202 © 2002 ADTRAN, Inc. 61200305L1-1F
DLCI
Write security: 3; Read security: 5
Local address for each PVC as assigned by the carrier.
QOS
Write security: 3; Read security: 5
Quality of service. These values can be used to assign a guaranteed amount of bandwidth available
for this connection. The sum of all QOS values for the sublink should not exceed the Committed
Information Rate (CIR).
BURST
Write security: 3; Read security: 5
Sets the burst rate used by this virtual circuit for data traffic. A value of zero means that the burst rate
is not limited. The value is in kilobits/second. If voice traffic is flowing on ANY sublink on the port
carrying THIS sublink, you should enter a value for this setting. Otherwise, leave this field set to
default (zero). If the service provider has supplied a 'Be' value, enter that value in this field. The burst
rate defines the amount that this virtual circuit is allowed to exceed the CIR. If the service provider
has not supplied an excess burst rate, enter the wire speed in this field.
CONFIG
Write security: 3; Read security: 5
Allows configuration of parameters for each DLCI.
FRAGMENTATION THRESHOLD
Write security: 3; Read security: 5
Max packet size allowed on this PVC. A zero value disables fragmentation. Fragmentation is
used to improve the quality of voice transmission. A good value is R/300, where R is the smallest
of the ATLAS 550 link rates or the far end link rate in bits per second. For example, if a DLCI
comes from an FSU 5622 running on a 56K DDS line and is delivered to the ATLAS 550 on a
full T1, the lower rate is 56000 and the value is 186 or 187. Entered values between 1 and 127 are
adjusted upward.
DLCI STATE
Write security: 3; Read security: 5
Controls how the state of this DLCI is reported to any packet connections within ATLAS 550
attempting to send or receive data on this DLCI.
AUTO Passes the state as reported by the frame relay switch. Set DLCI
STATE to AUTO for normal operation.
FORCE ACTIVE This DLCI disregards the status as reported from the switch and
reports Active to all packet endpoints within ATLAS 550.
FORCE INACTIVE Reports status as DOWN to all packet endpoints within ATLAS 550.