Frame-relay MFR interface configuration instance 1

I 've been having trouble with frame-relay these days. I got the following NNI interface a few days ago and now I 've got MFR again. The MFR function is similar to channel-group and can increase bandwidth.

The test topology is shown below:

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R1/R2/R3 has three endpoints, and R4 is a frame-relay switch. Configure the MFR link between R1 and R4.

Obviously, R1 needs to use sub-interfaces to connect R2/R3 at the same time. This experiment uses the point-to-point sub-interface mode.

The main configurations of R1 are as follows:

Interface mfr1
No IP Address
!
Interface mfr1.1 point-to-point
IP address 172.16.12.1 255.255.255.0
SNMP Trap link-status
Frame-relay interface-dlci 102
!
Interface mfr1.2 point-to-point
IP address 172.16.13.1 255.255.255.0
SNMP Trap link-status
Frame-relay interface-dlci 103

!

Interface serial0/0
No IP Address
Encapsulation frame-relay mfr1
Clock rate 2000000
No ARP frame-relay
!
Interface serial0/1
No IP Address
Encapsulation frame-relay mfr1
Clock rate 2000000
No ARP frame-relay

!

R2 main Configuration:

Interface serial0/2
IP address 172.16.12.2 255.255.255.0
Encapsulation frame-relay
Clock rate 2000000
Frame-relay interface-dlci 201

!

R3 Configuration:

Interface serial0/3
IP address 172.16.13.2 255.255.255.0
Encapsulation frame-relay
Clock rate 2000000
Frame-relay interface-dlci 301
!

Main configuration of R4:

Frame-relay Switching

!

Interface mfr0
No IP Address
Frame-relay INTF-type DCE
!

Interface serial0/0
No IP Address
Encapsulation frame-relay mfr0
Clock rate 2000000
No ARP frame-relay
!

Interface serial0/1
No IP Address
Encapsulation frame-relay mfr0
Shutdown
Clock rate 2000000
No ARP frame-relay
!
Interface serial0/2
No IP Address
Encapsulation frame-relay
Clock rate 2000000
Frame-relay INTF-type DCE
!
Interface serial0/3
No IP Address
Encapsulation frame-relay
Clock rate 2000000
Frame-relay INTF-type DCE
!
Connect 1 mfr0 102 serial0/2 201
!
Connect 2 mfr0 103 serial0/3 301
!

The configuration is the above, and the special marked area is my headache for several days, and I was lucky to find it in a query.

Frame-ralay switch with MFR configured does not have frame-ralay route, but the frame-relay route function is completed using connect.

We hope to provide you with some help.

Frame-relay MFR interface configuration instance 1