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Typical Frame Relay Configuration Example 283
[Router-Serial2:15]dialer bundle-member 20
For configuring the BDR and Frame Relay parameters on Dialer1, refer to the
configuration on Dialer0. The user only needs to change the IP address to
120.0.0.2, DLCI number to 200, and configure to receive the incoming calls from
the number 660208 and assign Dialer1 to Dialer Bundle 20.
Frame Relay Switching
Connection through
Frame Relay over ISDN
I. Networking Requirements
RouterB (DCE) is connected to the ISDN interface on RouterA (DTE) via ISDN at one
side and RouterC (DTE) via the serial interface at another side. With the Frame
Relay switching function of DCE, routers can interwork across ISDN. RouterA
adopts legacy BDR to make calls while RouterB adopts dialer profiles. To establish
a PVC, the call must be originated from RouterA.
On RouterA, two BRI interfaces, Bri0 and Bri1, are available. Bri0 is assigned with
the ISDN number 660218, the IP address 110.0.0.1 and the DLCI number 100.
Bri1 is assigned with the ISDN number 660208, the IP address 120.0.0.1 and the
DLCI number 200. On RouterB, one PRI interface is available for providing services
for two dialer interfaces. This PRI interface is assigned with the ISDN number
660045, and the DLCI numbers 100 and 200 respectively for these two dialer
interfaces. At the same time, RouterB is connected to RouterC via a serial
interface, which is assigned with the DLCI numbers 300 and 400. The serial
interface on RouterC is available with 2 sub-interfaces, which are respectively
assigned with the IP addresses 110.0.0.2 and 120.0.0.2, and DLCI numbers 300
and 400.
II. Networking Diagram
Figure 100 Networking for the Frame Relay switching connection between DTE devices
III. Configuration Procedure
1 Configure RouterA
a Configure the BDR-related parameters on Bri0.
[Router]dialer-rule 1 ip permit
[Router]interface bri 0
[Router-Bri0]link-protocol fr
[Router-Bri0]ip address 110.0.0.1 255.255.255.0
[Router-Bri0]dialer enable-legacy
[Router-Bri0]dialer-group 1
[Router-Bri0]dialer number 660045
b Configure the Frame Relay-related parameters on Bri0.
[Router-Bri0]fr map ip 110.0.0.2 dlci 100
[Router-Bri0]fr dlci 100
For configuring the BDR and Frame Relay parameters on Bri1, refer to the
configuration on Bri0. The user only needs to change the IP address to 120.0.0.1,
DLCI number to 200, and address mapping to static address mapping.
ISDN
Switch
Router BRouter A
DTE DCE
Bri0
Bri1
Pri
660218
660208
660045
DTE
Router C
S1
S1