How to configure Frame Relay Multipoint interface

What is Frame Relay?

Frame Relay Multipoint Topology:

 Step 1: Configure Frame Relay Switch on GNS3

Step 2: Configure HQ router

HQ(config)#interface s1/0

HQ(config-if)#encapsulation frame-relay >> turn on frame relay encapsulation

HQ(config-if)#ip address 192.168.100.1 255.255.255.0  >> specify ip  address

HQ(config-if)#frame-relay map ip 192.168.100.2 102 broadcast  >> Branch1

HQ(config-if)#frame-relay map ip 192.168.100.3 103 broadcast >> Branch2

HQ(config-if)#frame-relay map ip 192.168.100.4 104 broadcast >> Branch3

 

Or may create Sub interface to configure Frame-Relay:

HQ(config)#interface s1/0.1 multipoint

HQ(config-subif)#encapsulation frame-relay >> turn on frame relay encapsulation

HQ(config-subif)#ip address 192.168.100.1 255.255.255.0  >> specify ip  address

HQ(config-subif)#frame-relay map ip 192.168.100.2 102 broadcast  >> Branch1

HQ(config-subif)#frame-relay map ip 192.168.100.3 103 broadcast >> Branch2

HQ(config-subif)#frame-relay map ip 192.168.100.4 104 broadcast >> Branch3

Note: The “Broadcast” keyword only use in Multipoint Frame Relay map

Step 3: Configure Branch1

Branch1(config)#interface s1/0

Branch1(config-if)#encapsulation frame-relay

Branch1(config-if)#ip address 192.168.100.2 255.255.255.0

Branch1(config-if)#frame-relay map ip 192.168.100.1 201 broadcast >> for HQ

Branch1(config-if)#frame-relay map ip 192.168.100.3 201 broadcast >> for Branch2

Branch1(config-if)#frame-relay map ip 192.168.100.4 201 broadcast >> for Branch3

Note: all Branch3, Branch4 Configuration is same as Branch1

Ping status:

 

Frame Relay Troubleshoot Command:

HQ#show frame-relay map

HQ#show frame-relay lmi

HQ#show frame-relay pvc

 

Running Configuration of all Routers:

Router HQ:

 !

interface Serial1/0

 ip address 192.168.100.1 255.255.255.0

 encapsulation frame-relay

 serial restart-delay 0

 no dce-terminal-timing-enable

 frame-relay map ip 192.168.100.2 102 broadcast

 frame-relay map ip 192.168.100.3 103 broadcast

 frame-relay map ip 192.168.100.4 104 broadcast

!

interface Serial1/0.1 multipoint

!

Router Branch1:

!

interface Serial1/0

 ip address 192.168.100.2 255.255.255.0

 encapsulation frame-relay

 serial restart-delay 0

 no dce-terminal-timing-enable

 frame-relay map ip 192.168.100.1 201 broadcast

 frame-relay map ip 192.168.100.3 201 broadcast

 frame-relay map ip 192.168.100.4 201 broadcast

!

Router Branch2:

!

interface Serial1/0

 ip address 192.168.100.3 255.255.255.0

 encapsulation frame-relay

 serial restart-delay 0

 no dce-terminal-timing-enable

 frame-relay map ip 192.168.100.1 301 broadcast

 frame-relay map ip 192.168.100.2 301 broadcast

 frame-relay map ip 192.168.100.4 301 broadcast

!

Router Branch3:

!

interface Serial1/0

 ip address 192.168.100.4 255.255.255.0

 encapsulation frame-relay

 serial restart-delay 0

 no dce-terminal-timing-enable

 frame-relay map ip 192.168.100.1 401 broadcast

 frame-relay map ip 192.168.100.2 401 broadcast

 frame-relay map ip 192.168.100.3 401 broadcast

!