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Figure 34. LAN Information Frame Location
Table 13. LANE Information Field Lengths
SDU SIZE Maximum Length
802.3 LEC
Maximum Length
DIX LEC
Maximum Length
802.5 LEC
1516 1492 1500 1462
4544 4520 4528 4490
9234 9210 9218 9180
18190 18166 18176 18136
5.2 Traffic Management
The following sections provide background information about traffic management
in ATM networks and how it is implemented in the 8285.
Table 14 summarizes the characteristics of various traffic types.
Table 14. Types of Traffic
CBR VBR UBR ABR
Connection Mode Connection-oriented Connection-oriented Connection-oriented Connection-oriented
Timing Sensitive Yes Yes No No
ATM Adaptation
Layer
AAL 1 AAL 2 AAL 3/4, 5 AAL 5
Quality of Service Yes Yes No Yes
Reserved
Bandwidth
Yes Yes No No
Flow Control No No No Yes
Traffic Types Voice, Video Compressed
Voice, Video
Data Data
Chapter 5. 8285 ATM Network Specifications 89