Instead, use a different subinterface number.
S2.1 = 10.17.0.2/24
DLCI = 130
DLCI = 140
DLCI = 120
S2.1 = 10.17.0.3/24
S2.1 = 10.17.0.4/24
B
C
D
S2.2 = 10.17.0.1/24
A
interface Serial2
no ip address
encapsulation frame-relay
!
interface Serial2.2 multipoint
ip address 10.17.0.1 255.255.255.0
bandwidth 64
frame-relay map ip 10.17.0.2 120 broadcast
frame-relay map ip 10.17.0.3 130 broadcast
frame-relay map ip 10.17.0.4 140 broadcast
no ip split-horizon
Establishing a WAN Connection with Frame Relay 339
subinterface, split horizon must be manually disabled at Router A to overcome the split
horizon issue.
Follow these steps to con?¬?gure subinterfaces on a physical interface:
Step 1 Select the interface upon which you want to create subinterfaces and enter
interface con?¬?guration mode.
Step 2 Remove any network layer address, like the IP address, assigned to the
physical interface and assign the network layer address to the
subinterface.
Step 3 Con?¬?gure Frame Relay encapsulation.
Step 4 Use the following command to select the subinterface you want to
con?¬?gure and to designate it as a multipoint subinterface:
RouterX(config-if)# iinntteerrffaaccee sseerriiaall number.
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