AIS AI2524 Manuel D’Utilisation
Chapter 13: AI2524 Frame Relay Configuration Steps
August 1997
Page 13-13
2524UM
By default, the Frame Reject frame is sent at the LAPF Frame Reject
procedure.
procedure.
Note:
Manipulation of Layer 2 parameters is not recommended
if you do not know well the resulting functional change.
For more information, refer to the ITU-T Q.922
specification for LAPF.
if you do not know well the resulting functional change.
For more information, refer to the ITU-T Q.922
specification for LAPF.
If you must change Layer 2 parameters for your network environment
and if you know the resulting functional change, complete these tasks
as needed:
and if you know the resulting functional change, complete these tasks
as needed:
z
Set the LAPF window size k.
frame-relay lapf k
number
z
Set the LAPF maximum retransmission count N200.
frame-relay lapf n200
retries
z
Set the maximum length of the Information field of the LAPF I
frame N201.
frame N201.
frame-relay lapf n201
number
z
Set the LAPF retransmission timer value T200.
frame-relay lapf t200
tenths-of-a-second
z
Set the LAPF link idle timer value T203 of DLCI 0.
frame-relay lapf t203
seconds
Configure Frame
Relay Traffic
Shaping
Relay Traffic
Shaping
Beginning with Release 11.2, AI2524 supports Frame Relay traffic
shaping, which provides:
shaping, which provides:
z
Rate enforcement on a per-virtual circuit basis—The peak rate for
outbound traffic can be set to the CIR or some other user-config
ured rate.
outbound traffic can be set to the CIR or some other user-config
ured rate.
z
Dynamic traffic throttling on a per-virtual circuit basis—When
BECN packets indicate congestion on the network, the outbound
traffic rate is automatically stepped down; when congestion eases,
the outbound traffic rate is stepped up again. This feature is en-
abled by default.
BECN packets indicate congestion on the network, the outbound
traffic rate is automatically stepped down; when congestion eases,
the outbound traffic rate is stepped up again. This feature is en-
abled by default.
z
Enhanced queuing support on a per-virtual circuit basis—Either
custom queuing or priority queuing can be configured for individ-
ual virtual circuits.
custom queuing or priority queuing can be configured for individ-
ual virtual circuits.