Avaya Configuring Frame Relay Services Uživatelský manuál Strana 68

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Configuring Frame Relay Services
2-38
117376-C Rev. 00
Figure 2-13. PVC Pass-Through
Figure 2-13 shows a router with an Ethernet interface, and two frame relay
interfaces. The frame relay interface to the frame relay network is a DTE (right
side of illustration). The frame relay interface to the FRAD is a DCE (left side).
The router delivers all IP frames inbound on DLCI 50 to the IP interface. It also
delivers all IP frames inbound on DLCI 30 to the IP interface. The router delivers
all other traffic inbound on DLCI 30 via the PVC pass-through system to DLCI
20, which transmits the data to the FRAD. All data inbound on DLCI 20 is
delivered via the PVC pass-through system to DLCI 30, which transmits the data
to the frame relay network.
PVC pass-through works with both leased line and dial-on-demand interfaces. It
works with Bay Networks data compression, congestion control, and traffic
shaping. It does not work with data encryption, which requires a direct mode
PVC.
Frame Relay Dial Services
Frame relay works with Bay Networks dial-on-demand and dial backup services.
For information about and directions for configuring dial services see Configuring
Dial Services.
FRAD
DTE
DTE
DCE
DCEs
Router
PVC Passthru
IP Router
IP
IP
DLCI 50
DLCI 30
DLCI 30
Frame
relay
network
DLCI 20
FR0016A
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