Hi,

The other spoke should send NHRp Reply via spoke-to-Spoke tunnel. It seems
the routers have problem with setting up IPSec tunnel. Check ISAKMP Phase 1
and PSK.

You can disable tunnel protection for verification too.

Regards,
Piotr

2011/11/24 waleed ' <[email protected]>

>  I have configured 3 routers for DMVPN phase 3  , this tunnel
> configuration on the hub :
> interface Tunnel0
>  ip address 172.16.245.2 255.255.255.0
>  ip mtu 1400
>  ip nhrp authentication cisco123
>  ip nhrp map multicast dynamic
>  ip nhrp network-id 123
>  ip nhrp cache non-authoritative
>  ip nhrp shortcut
>  ip nhrp redirect
>  no ip split-horizon eigrp 1
>  no ip split-horizon
>  tunnel source Serial1/0
>  tunnel mode gre multipoint
>  tunnel key 123
>  tunnel protection ipsec profile DMVPN_PROFILE
> end
>
> and on the tow spoke :
> R4:
> interface Tunnel0
>  ip address 172.16.245.4 255.255.255.0
>  ip mtu 1400
>  ip nhrp authentication cisco123
>  ip nhrp map 172.16.245.2 10.1.245.2
>  ip nhrp map multicast 10.1.245.2
>  ip nhrp network-id 123
>  ip nhrp nhs 172.16.245.2
>  ip nhrp cache non-authoritative
>  ip nhrp shortcut
>  ip nhrp redirect
>  tunnel source Serial1/0
>  tunnel mode gre multipoint
>  tunnel key 123
>  tunnel protection ipsec profile DMVPN_PROFILE
> end
>
> R5:
> interface Tunnel0
>  ip address 172.16.245.5 255.255.255.0
>  ip mtu 1400
>  ip nhrp authentication cisco123
>  ip nhrp map 172.16.245.2 10.1.245.2
>  ip nhrp map multicast 10.1.245.2
>  ip nhrp network-id 123
>  ip nhrp nhs 172.16.245.2
>  ip nhrp cache non-authoritative
>  ip nhrp shortcut
>  ip nhrp redirect
>  tunnel source Serial1/0
>  tunnel mode gre multipoint
>  tunnel key 123
>  tunnel protection ipsec profile DMVPN_PROFILE
> end
>
>
> and I run eigrp between the all , and the spookes routing table show
> entries for loopback's of other spokes and I can  ping that loopbacks , but
> my problem is when the spoke to spoke tunnel not working  and when I check
> NHRP table on spoke
>
> R5#show ip nhrp
> 172.16.245.2/32 via 172.16.245.2, Tunnel0 created 09:35:56, never expire
>   Type: static, Flags: nat used
>   NBMA address: 10.1.245.2
> 172.16.245.4/32 via 172.16.245.4, Tunnel0 created 00:58:21, expire
> 01:13:32
>   Type: dynamic, Flags: router nat implicit
>   NBMA address: 10.1.245.4
>     (no-socket)
> *192.168.4.4/32, Tunnel0 created 00:00:06, expire 00:02:58*
> *  Type: incomplete, Flags: negative*
> *  Cache hits: 2*
> *
> *
> *
> *
> the loopback appear as incomplete , and when I make debug for NHRP I find
> that the router send nhrp request to the other spoke but other spoke not
> replaying
>
> R5#
> *Nov 24 10:36:23.394: NHRP: Send Resolution Request via Tunnel0 vrf 0,
> packet size: 88
> *Nov 24 10:36:23.398:  src: 172.16.245.5, dst: 192.168.4.4
> *Nov 24 10:36:23.398:  (F) afn: IPv4(1), type: IP(800), hop: 255, ver: 1
> *Nov 24 10:36:23.398:      shtl: 4(NSAP), sstl: 0(NSAP)
> *Nov 24 10:36:23.398:  (M) flags: "router auth src-stable nat ", reqid: 29
> *Nov 24 10:36:23.402:      src NBMA: 10.1.245.5
> *Nov 24 10:36:23.402:      src protocol: 172.16.245.5, dst protocol:
> 192.168.4.4
> *Nov 24 10:36:23.402:  (C-1) code: no error(0)
> *Nov 24 10:36:23.402:        prefix: 0, mtu: 1514, hd_time: 7200
> R5#
> *Nov 24 10:36:23.406:        addr_len: 0(NSAP), subaddr_len: 0(NSAP),
> proto_len: 0, pref: 0
> R5#
> *Nov 24 10:36:54.370: NHRP: Send Resolution Request via Tunnel0 vrf 0,
> packet size: 88
> *Nov 24 10:36:54.374:  src: 172.16.245.5, dst: 192.168.4.4
> *Nov 24 10:36:54.374:  (F) afn: IPv4(1), type: IP(800), hop: 255, ver: 1
> *Nov 24 10:36:54.374:      shtl: 4(NSAP), sstl: 0(NSAP)
> *Nov 24 10:36:54.374:  (M) flags: "router auth src-stable nat ", reqid: 29
> *Nov 24 10:36:54.378:      src NBMA: 10.1.245.5
> *Nov 24 10:36:54.378:      src protocol: 172.16.245.5, dst protocol:
> 192.168.4.4
> *Nov 24 10:36:54.378:  (C-1) code: no error(0)
> *Nov 24 10:36:54.378:        prefix: 0, mtu: 1514, hd_time: 7200
> R5#
>
>
> any one se like this before ?
>
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