hiii question in eigrp routing over NBMA network

[ashraf dawood]

                  

hiiii guys i have aproblem with hub and spoke toplogy i have the toplogy shown above the hub is R16 ping all spoke but spoke not ping each other can any one help me  note that i use multipoint configuration here is the configuration

R16 :

interface Loopback0
ip address 10.1.1.1 255.255.255.0
!
interface Serial0/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial0/0.1 multipoint
ip address 192.168.1.1 255.255.255.0
no ip split-horizon eigrp 100
frame-relay map ip 192.168.1.2 102 broadcast
frame-relay map ip 192.168.1.3 103 broadcast
frame-relay interface-dlci 102
frame-relay interface-dlci 103
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 10.1.1.0 0.0.0.255
network 192.168.1.0
no auto-summary
!
R17 :

interface Loopback3
ip address 10.3.1.1 255.255.255.0
!
interface Serial0/0
ip address 192.168.1.3 255.255.255.0
encapsulation frame-relay
serial restart-delay 0
frame-relay map ip 192.168.1.1 301 broadcast
frame-relay interface-dlci 301
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 10.3.1.0 0.0.0.255
network 192.168.1.0
no auto-summary
!
R18 :

interface Loopback2
ip address 10.2.1.1 255.255.255.0
!
interface Serial0/0
ip address 192.168.1.2 255.255.255.0
encapsulation frame-relay
serial restart-delay 0
frame-relay map ip 192.168.1.1 201 broadcast
frame-relay interface-dlci 201
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router eigrp 100
network 10.2.1.0 0.0.0.255
network 192.168.1.0
no auto-summary
every thing appear that is normal the routing table is normal but it is not operate as  required any one can help me plz

Show trimmed content

[Bilal Nawaz · Accepted solution]

Hello, on R17 and R18 (spoke devices) try using a sub-interface and specify them as point-to-point. So your configuration will look like this:

R16:

nterface Serial0/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial0/0.1 multipoint
ip address 192.168.1.1 255.255.255.0
no ip split-horizon eigrp 100
frame-relay map ip 192.168.1.2 102 broadcast
frame-relay map ip 192.168.1.3 103 broadcast

R17:

interface Serial0/0
No IP address
Encapsulation frame-relay
!
Interface serial0/0.1 point-to-point
ip address 192.168.1.3 255.255.255.0
serial restart-delay 0
frame-relay interface-dlci 301


R18:

interface Serial0/0
No IP address
Encapsulation frame-relay
!
Interface serial 0/0.1 point-to-point
ip address 192.168.1.2 255.255.255.0
serial restart-delay 0
frame-relay interface-dlci 201

Since you have enabled eigrp on your loopbacks, you should be able to see them in the routing table learned via eigrp and be able to ping them.
Hope this helps.

Sent from Cisco Technical Support iPhone App

[ashraf dawood]

thanks eng  bilal the configuration is correct thank you very much