Avaya Configuring Frame Relay Services Bedienungsanleitung Seite 30

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Configuring Frame Relay Services
2-4 117376-B Rev. 00
PVC and SVC Comparison
Table 2-1 lists the protocols and features that PVCs and SVCs support.
Frame Relay Packets
Figure 2-2 illustrates the structure of a frame relay packet. The packet’s header
field includes the following:
Data link connection identifier (DLCI)
The DLCI is the virtual circuit (VC) identification number. The frame relay
network uses the DLCI to direct basic data flow. You configure the DLCI for
PVCs. For SVCs, the frame relay switch assigns the DLCI number on a per
call basis.
Table 2-1. PVC and SVC Protocol and Feature Support
Protocol/Feature PVCs Support SVCs Support
IP, IPv6, IPX ✔✔
AppleTalk
APPN
Bridging
DECnet
DLSw
OSI
VINES
XNS
Data compression (WCP) ✔✔
Data encryption (WEP)
Protocol prioritization ✔✔
Dial-on-demand ✔✔
Dial backup ✔✔
Congestion control ✔✔
Traffic shaping ✔✔
PVC pass through
Multiline
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