09-15-2008 12:31 AM - edited 03-09-2019 09:28 PM
Hi,
Trying to configure DMVPN as redundant link, A hub with four SPOKE,Wireless is the primary link and DMVPN is configured over ADSL link for redundancy,such that when the primary wireless link goes down EIGRP should select the alternate link and data traffic should flow through ADSL/VPN GRE tunnel
The issue is when the wirelss link is teared down, the SPOKE route goes down and can't reach the SPOKE, ADSL is a P2P interface with /30 IP address,
Any advice on this issue would be appreciated
Have attached config of HUB and one spoke router
09-15-2008 05:36 AM
i cant see ant tunnel interface config on the SPOKE!!!!!
u need somthing liek:
crypto isakmp policy 1
encr 3des
authentication pre-share
group 2
crypto isakmp key VPN address 0.0.0.0 0.0.0.0
!
!
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
mode transport
!
crypto ipsec profile SDM_Profile1
set transform-set ESP-3DES-SHA
interface Tunnel0
ip address 192.168.220.1 255.255.255.0
ip nhrp authentication DMVPN_NW
ip nhrp map 192.168.220.1 10.8.253.98
ip nhrp map multicast 10.8.253.98
ip nhrp network-id 100000
ip nhrp nhs 192.168.220.1
tunnel source BVI1
tunnel mode gre multipoint
tunnel key 100000
tunnel protection ipsec profile SDM_Profile1
router eigrp 100
redistribute static
network 10.8.253.0 0.0.0.255
network 144.123.0.0
network 192.168.0.0 0.0.255.255
on the HUB add the following to the tunnel interface:
interface Tunnel0
no ip next-hop-self eigrp 100
no ip split-horizon eigrp 100
good luck
if helpful Rate
09-15-2008 09:23 PM
Thanks for your reply marwanshawi,
I missed the tunnel config while copy+paste, attached the complete config of hub & spoke, still no luck, i could not understand why the tunnel interface goes down when wireless link is dropped. though the tunnel source interface is BVI which is bridged to ATM0/0/0(DSL) interface
09-16-2008 01:09 AM
Hi All,
I figured out the problem, it was related to routing.
Thank you
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide