10-03-2013 01:56 AM - edited 03-04-2019 09:13 PM
hello,
eigrp running on frame relay topology(multipoint hub and spoke), i have assign loopback address on all three routers eigrp can form neighbor 172.16.124.0 netowrk but in hub router it don't have entry to both spoke loop address and i know split horizon stop spoke to spoke advertise my point is about hub router has no entry to spoke loop address
here is my config
Router 1
interface Loopback1
ip address 10.1.1.1 255.255.255.0
!
interface Loopback2
ip address 10.1.2.1 255.255.255.0
!
interface Loopback3
ip address 10.1.3.1 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 172.16.124.1 255.255.255.248
encapsulation frame-relay
serial restart-delay 0
frame-relay map ip 172.16.124.3 103 broadcast
frame-relay map ip 172.16.124.2 102 broadcast
no frame-relay inverse-arp
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
router eigrp 25
network 10.0.0.0
network 172.16.124.0 0.0.0.255
auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
R1#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D 172.16.0.0/16 is a summary, 00:05:45, Null0
C 172.16.124.0/29 is directly connected, Serial1/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.1.3.0/24 is directly connected, Loopback3
C 10.1.2.0/24 is directly connected, Loopback2
C 10.1.1.0/24 is directly connected, Loopback1
D 10.0.0.0/8 is a summary, 00:04:34, Null0
Router 2
interface Loopback1
ip address 10.2.1.1 255.255.255.0
!
interface Loopback2
ip address 10.2.2.1 255.255.255.0
!
interface Loopback3
ip address 10.2.3.1 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 172.16.124.2 255.255.255.248
encapsulation frame-relay
serial restart-delay 0
frame-relay map ip 172.16.124.3 201 broadcast
frame-relay map ip 172.16.124.1 201 broadcast
no frame-relay inverse-arp
interface Serial1/4
!
router eigrp 25
network 10.0.0.0
network 172.16.124.0 0.0.0.255
auto-summary
!
ip forward-protocol nd
no ip http server
R2#sh ip rou
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D 172.16.0.0/16 is a summary, 00:05:35, Null0
C 172.16.124.0/29 is directly connected, Serial1/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.2.1.0/24 is directly connected, Loopback1
C 10.2.2.0/24 is directly connected, Loopback2
D 10.0.0.0/8 is a summary, 00:05:34, Null0
C 10.2.3.0/24 is directly connected, Loopback3
Router 3
interface Loopback1
ip address 10.3.1.1 255.255.255.0
!
interface Loopback2
ip address 10.3.2.1 255.255.255.0
!
interface Loopback3
ip address 10.3.3.1 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 172.16.124.3 255.255.255.248
encapsulation frame-relay
serial restart-delay 0
frame-relay map ip 172.16.124.2 301 broadcast
frame-relay map ip 172.16.124.1 301 broadcast
no frame-relay inverse-arp
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
!
interface Serial1/5
no ip address
shutdown
router eigrp 25
network 10.0.0.0
network 172.16.124.0 0.0.0.255
auto-summary
!
ip forward-protocol nd
no ip http server
R3#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
D 172.16.0.0/16 is a summary, 00:05:35, Null0
C 172.16.124.0/29 is directly connected, Serial1/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.3.1.0/24 is directly connected, Loopback1
C 10.3.3.0/24 is directly connected, Loopback3
D 10.0.0.0/8 is a summary, 00:05:35, Null0
C 10.3.2.0/24 is directly connected, Loopback2
Solved! Go to Solution.
10-03-2013 02:05 AM
Hi,
On all routers:
router eigrp 25
no auto
After that you'll see the spokes networks on the hub and the hub networks on the spokes.
You'll also need to configure static frame-relay maps for the other spoke on the spokes if you want to ping the spoke networks without specifying the loopbacks as source interface.
Regards
Alain
Don't forget to rate helpful posts.
10-03-2013 02:29 AM
Auto-Summary in the EIGRP process will summarise your networks as they cross classful bondaries.
So when your 10.x.x.x loopbacks cross a classful boundary (the serial interface 172.16.xx.xx) they become back to there classful summary - 10.0.0.0/8.
10-03-2013 02:05 AM
Hi,
On all routers:
router eigrp 25
no auto
After that you'll see the spokes networks on the hub and the hub networks on the spokes.
You'll also need to configure static frame-relay maps for the other spoke on the spokes if you want to ping the spoke networks without specifying the loopbacks as source interface.
Regards
Alain
Don't forget to rate helpful posts.
10-03-2013 02:20 AM
What is the reason I have to mention no auto summary, it should send tht update to any obe spoke also I have entered wildcard mask. If I do summary like ip route summary eigrp25 can it send tht network update to spoke ?
Sent from Cisco Technical Support Android App
10-03-2013 02:29 AM
Auto-Summary in the EIGRP process will summarise your networks as they cross classful bondaries.
So when your 10.x.x.x loopbacks cross a classful boundary (the serial interface 172.16.xx.xx) they become back to there classful summary - 10.0.0.0/8.
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