Table 8-1. Suggested Fragmentation Values Based On The Pvc Cir - ADTRAN Atlas 550 User Manual

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I -B S N
N AND EQUENCE UMBER
All packets on this PVC will get a numbered tag so that ADTRAN IQ
products can detect lost packets in the frame relay network. Turn this
option ON only if there is an ADTRAN IQ-capable product on the other
end of the PVC.
R FECN N
EMOTE OTIFICATION
If FECN is received on the interface, a notification is sent to frame relay
equipment on other end of the PVC.
R BECN
EACT TO
If BECN is received, traffic to the frame relay network is flowed off.
D DE P
ROP ACKETS WHEN OVERLOADED
If traffic congestion occurs, discard eligible (DE) packets drop.
F T
RAGMENTATION HRESHOLD
Defines the maximum data packet size that will be transmitted without
fragmenting the data to support voice. Table 8-1 on page 8-9 provides
suggested values based on the PVC CIR.
F S
RAGMENTATION IZE
Defines packet size when fragmentation is active.

Table 8-1. Suggested Fragmentation Values Based on the PVC CIR

PVC Frag Frag
CIR Size Threshold
64 56 112
128 136 272
192 216 432
256 296 592
320 376 752
384 456 912
448 536 1072
512 616 1232
576 696 1392
640 776 1552
704 856 1712
768 936 1872
DLCI S
TATE
Controls how the state of this DLCI is reported to any packet connec-
tions within the ATLAS 550 attempting to send or receive data on this
DLCI.
ATLAS 550 User Manual
Chapter 8. Packet Manager
PVC Frag Frag
CIR Size Threshold
832 1016 2032
896 1096 2192
960 1176 2352
1024 1256 2512
1088 1336 2672
1152 1416 2832
1216 1496 2992
1280 1576 3152
1344 1656 3312
1408 1736 3472
1472 1816 3632
1536 1896 3792
8-9