Dmvpn

[burhaans28]

Hi,

I am doing dmvpn I am unable to ping 10.1.1.2 which is spoke from hub 

and i cant't see any route in hub routing table on tunnel interface 

and i am doing eigrp on overlay 

but i am unable to create eigrp adjacency between hub and spoke

this is my config

Hub

conf ter
hostname Hub

int lo 0
ip add 10.10.10.10 255.255.255.255
exit

int gig 0/0
ip add 100.1.2.1 255.255.255.0
no sh
exit

ip route 0.0.0.0 0.0.0.0 100.1.2.2

int tunnel 1
ip add 10.1.1.1 255.255.255.0

tunnel source gig 0/0
tunnel mode gre multipoint
ip nhrp network-id 1
ip nhrp map 10.1.1.2 101.0.0.2
exit

router eigrp 100
network 10.0.0.0

-----------------------------------------------------------------------
R2

int lo 0
ip add 100.0.0.3 255.255.255.255
ip ospf 1 area 0
exit

int gig 0/0
ip add 100.1.2.2 255.255.255.0
no sh
exit

int gig 0/1
ip add 100.0.3.1 255.255.255.0
no sh
ip ospf 1 area 0
exit

router ospf 1
router-id 100.0.0.3
exit

router bgp 1
no bgp default ipv4-unicast
neighbor 100.0.0.4 remote-as 1
neighbor 100.0.0.4 update-source Loopback0

address-family ipv4

network 100.0.3.0 mask 255.255.255.0
network 100.1.2.0 mask 255.255.255.0
neighbor 100.0.0.4 activate
exit
exit

ip route 0.0.0.0 0.0.0.0 100.1.2.1

---------------------------------------------------------------

R4

conf ter

int lo 0
ip add 100.0.0.4 255.255.255.255
ip ospf 1 area 0
exit

int gig 0/0
ip add 100.0.3.2 255.255.255.0
no sh
ip ospf 1 area 0
exit

int gig 0/1
ip add 101.0.0.1 255.255.255.0
no sh
exit

router ospf 1
router-id 100.0.0.4
exit

router bgp 1
no bgp default ipv4-unicast
neighbor 100.0.0.3 remote-as 1
neighbor 100.0.0.3 update-source Loopback0

address-family ipv4

network 100.0.3.0 mask 255.255.255.0
network 101.0.0.0 mask 255.255.255.0

neighbor 100.0.0.3 activate
exit
exit

ip route 101.0.0.0 255.255.255.0 101.0.0.2

-------------------------------------------------------------------------
Spoke1
conf ter
hostname spoke1

int lo0
ip add 25.25.25.25 255.255.255.255
exit

int gig 0/0
ip add 101.0.0.2 255.255.255.0
no sh
exit

ip route 0.0.0.0 0.0.0.0 101.0.0.1

int tunnel 1
ip add 10.1.1.2 255.255.255.0
tunnel source gig 0/0
tunnel destination 100.1.2.1
ip nhrp network-id 1
ip nhrp map 10.1.1.1 100.1.2.1
exit

router eigrp 100
network 10.0.0.0

---------------------------------------------------------------------------------

[ponzki · Accepted solution]

@burhaans28 , looks like you are missing multicast capability config.

Pls configure and add the following on the Hub router and provide results:

int tunnel 1 

ip nhrp map multicast 101.0.0.2

[paul driver · Accepted solution]

Hello
Providing your underlay is all working correctly you need to allow nhrp multicast on the nbma address and disable split horizon
hub
int tunnel 1
ip add 10.1.1.1 255.255.255.0
tunnel source gig 0/0
tunnel mode gre multipoint
ip nhrp network-id 1
ip nhrp map 10.1.1.2 101.0.0.2
ip nhrp map multicast 101.0.0.2
no ip split-horizon

[burhaans28 · Accepted solution]

Yeah Dmvpn is working now Thanks a lot 

[burhaans28]

Hi, 

Here DMVPN is working fine i can ping from hub to spoke

But from Hub to Vios I am working ospf 1 

this is the config 

Vios

int gig 0/0

ip add 10.11.3.1

no sh

ip ospf 1 area 0

On hub router 

int gig 0/1

ip add 10.11.3.1

no sh

ip ospf 1 area 0

So i can't ping 10.11.3.1 and lo0 1.1.1.1 from spoke

but i can ping 10.11.3.2 which is on Hub router

[ponzki · Accepted solution]

@paul driver - in his topology, disabling split horizon is optional. But yes, if you have other spokes you want to connect to the DMVPN, you would need to disable split horizon.

[burhaans28 · Accepted solution]

Yeah its working Thanks a lot