Re: DMVPN - Ping fails on LAN to LAN

From: Cristian Matei <cmatei_at_ine.com>
Date: Sat, 19 Apr 2014 07:03:01 -0500

Hi,

        Except the fact that NHRP mapping on the spoke is wrong, you can9t have
static routes without a next-hop through a point-to-multipoint interface,
you need to specify also the next-hop or use dynamic routing.

Regards,

Cristian Matei, 2 x CCIE #23684 (R&S/SC)
cmatei_at_INE.com

Internetwork Expert, Inc.
http://www.INE.com

On 19/04/14 07:52, "Swapnendu Mazumdar" <ccie19804_at_gmail.com> wrote:

>Check this - Tunnel Source on Hub and NHRP mapping on spoke are using
>different set of IP addressess.
>
>Tunnel Source on Hub is using an IP from 127.0.0.0/8 range, that's a
>reserved Subnet for Loopbacks.
>
>Swap
>#19804
>On 19 Apr 2014 03:28, "R.B. Kumar" <seekumarin_at_gmail.com> wrote:
>
>> Hi Experts - Seeking your help to understand why I am not able to ping
>>the
>> HUB LAN IP address from Spoke LAN IP address in a DMVPN setup. It is a
>>new
>> installation I am trying to achieve.
>>
>>
>>
>> 1. Ping successful when doing from spoke to Hub Tunnel IP (ping
>><hub-Tunnel
>> IP address>)
>>
>> 2. Ping fails when doing from spoke to Hub Tunnel IP using source
>>Interface
>> as LAN IP add (ping <hub-Tunnel IP address> source <fa 0/0)
>>
>> 3. Ping fails when doing from spoke to Hub fa 0/0 using source
>>Interface
>> as LAN IP add (ping <hub-Tunnel IP address> source <fa 0/0)
>>
>>
>>
>> What is the general reason for this. The output from Router below. Can
>>you
>> help me please. Thanks in advance
>>
>> regards / RBK
>>
>> *debug *
>>
>> HUB#
>> *Mar 1 03:02:45.107: NHRP: MACADDR: if_in null netid-in 0 if_out
>>Tunnel0
>> netid-out 1
>> *Mar 1 03:02:45.107: NHRP: Checking for delayed event
>> 0.0.0.0/192.168.2.1on list (Tunnel0).
>> *Mar 1 03:02:45.107: NHRP: No node found.
>>
>> *Config*
>>
>> HUB#
>>
>> interface Tunnel0
>> ip address 172.16.1.1 255.255.255.0
>> no ip redirects
>> ip nhrp map multicast dynamic
>> ip nhrp network-id 1
>> tunnel source 127.11.100.1
>> tunnel mode gre multipoint
>> end
>>
>> interface FastEthernet0/0
>> ip address 152.141.1.85 255.255.255.0
>>
>>
>> ip route 192.168.2.0 255.255.255.0 Tunnel0
>>
>>
>> SPOKE#
>>
>> interface Tunnel1
>> ip address 172.16.1.2 255.255.255.0
>> no ip redirects
>> ip nhrp map 172.16.1.1 63.11.124.5
>> ip nhrp network-id 1
>> ip nhrp nhs 172.16.1.1
>> tunnel source 208.11.121.3
>> tunnel mode gre multipoint
>> end
>>
>> ip route 152.141.0.0 255.255.0.0 Tunnel1
>>
>>
>> interface FastEthernet0/0
>> ip address 192.168.2.1 255.255.255.0
>>
>>
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Received on Sat Apr 19 2014 - 07:03:01 ART

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