DMVPN Spoke to Spoke Neighbor Relationships
I am having trouble getting my DMVPN spokes to neighbor with one another. I am using GNS3 with the 7200 image using Version 15.2(4)M3 code.
I have one hub and 4 spokes in this configuration. I have a neighbor relationship from the hub to each of the 4 spokes but the spokes are not neighbors of each other. I also can't see routes between spokes, for example, If I advertise a prefix on spoke A, that prefix will show up on the hub but will not show up on any of the other spokes. The only routes I can see on the spokes are the routes advertised from the hub router. Below is my configuration, what am I missing here?
Hub:
interface Tunnel22
description HUB
bandwidth 1000
ip vrf forwarding MO
ip address 10.200.22.20 255.255.255.0
no ip redirects
ip mtu 1400
no ip next-hop-self eigrp 65500
no ip split-horizon eigrp 65500
ip nhrp authentication Cisco123
ip nhrp map multicast dynamic
ip nhrp network-id 22
ip nhrp registration no-unique
ip nhrp shortcut
ip nhrp redirect
ip tcp adjust-mss 1360
cdp enable
tunnel source FastEthernet1/0
tunnel mode gre multipoint
tunnel key 22
tunnel vrf ISP
!
interface FastEthernet1/0
description UPLINK TO CARRIER (ISP)
ip vrf forwarding ISP
ip address 172.16.2.1 255.255.255.0
duplex auto
speed auto
!
router eigrp TEST
!
address-family ipv4 unicast vrf MO autonomous-system 65500
!
af-interface default
exit-af-interface
!
topology base
default-metric 10000 100 255 1 1500
exit-af-topology
network 10.200.22.0 0.0.0.255
exit-address-family
Spoke:
interface Tunnel22
description SPOKE
bandwidth 1000
ip vrf forwarding MO
ip address 10.200.22.103 255.255.255.0
no ip redirects
ip mtu 1400
ip nhrp authentication Cisco123
ip nhrp map multicast 172.16.2.1
ip nhrp map 10.200.22.20 172.16.2.1
ip nhrp network-id 22
ip nhrp holdtime 300
ip nhrp nhs 10.200.22.20
ip nhrp registration no-unique
ip nhrp registration timeout 100
ip nhrp shortcut
ip nhrp redirect
ip tcp adjust-mss 1360
cdp enable
tunnel source FastEthernet1/0
tunnel mode gre multipoint
tunnel key 22
tunnel vrf ISP
!
interface FastEthernet1/0
description UPLINK TO CARRIER (ISP)
ip vrf forwarding ISP
ip address 172.16.1.1 255.255.255.0
duplex auto
speed auto
!
router eigrp TEST
!
address-family ipv4 unicast vrf MO autonomous-system 65500
!
af-interface default
passive-interface
exit-af-interface
!
af-interface Tunnel22
no passive-interface
exit-af-interface
!
topology base
default-metric 10000 100 255 1 1500
exit-af-topology
network 10.200.22.0 0.0.0.255
exit-address-family
The other hubs use the same config, they just have different IP addresses on the tunnel interface.
Comments
I would remove the vrf config first, and just get it working without vrf's in the beginning.
You also need to remove the ip nhrp shortcut command off the hub.
Where is your tunnel protection profile?
can you do a sh cryp sess or show cry isa sa
sh ip eig nei
sh ip cef
Also it seems that your design is DMVPN phase 3, due to the nhrp shortcut and nhrp redirect commands. I would remove the following command no ip next-hop-self eigrp 65500 from the HUB, as it is not needed for phase 3.
Please provide the output of your spoke's routing table as well.
Just my 2 cents...