cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1391
Views
0
Helpful
1
Replies

DMVPN Redundency and Failover: Dual ISP on a single HUB , and dual ISP on single SPOKE

ittechk4u1
Level 4
Level 4

Hello Experts,
Can anyone please provide me a simple solution on how to do a dual ISP on a single HUB , and dual ISP on single SPOKE for redundancy and fail-over.

Here is my Topology



Please correct my Config.
Thanks in advance!
-----------------------------------------------------------------------------

HUB(10.87.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 10.10.10.10 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 20.20.20.20 255.255.255.248
!
int tunnel 87
ip address 172.20.87.254 255.255.255.0
tunnel source 10.10.10.10
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
no ip split-horizon eigrp 87
no ip next-hop-self eigrp 87
!
int tunnel 187
ip address 172.20.187.254 255.255.255.0
tunnel source 20.20.20.20
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
no ip split-horizon eigrp 187
no ip next-hop-self eigrp 187
!
router eigrp 87
network 10.87.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.87.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 11.11.11.11 255.255.255.255 10.10.10.9
ip route 12.12.12.12 255.255.255.255 10.10.10.9
ip route 21.21.21.21 255.255.255.255 20.20.20.19
ip route 22.22.22.22 255.255.255.255 20.20.20.19

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

Spoke1(10.85.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 11.11.11.11 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 21.21.21.21 255.255.255.248
!
int tunnel 87
ip address 172.20.87.1 255.255.255.0
tunnel source 11.11.11.11
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
ip nhrp map multicast 10.10.10.10
ip nhrp map 172.20.87.254 10.10.10.10
ip nhrp nhs 172.20.87.254
!
int tunnel 187
ip address 172.20.187.1 255.255.255.0
tunnel source 21.21.21.21
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
ip nhrp map multicast 20.20.20.20
ip nhrp map 172.20.187.254 20.20.20.20
ip nhrp nhs 172.20.187.254
!
router eigrp 87
network 10.85.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.85.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 10.10.10.10 255.255.255.255 11.11.11.10
ip route 20.20.20.20.255.255.255.255 21.21.21.20

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

Spoke2(10.86.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 12.12.12.12 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 22.22.22.22 255.255.255.248
!
int tunnel 87
ip address 172.20.87.2 255.255.255.0
tunnel source 12.12.12.12
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
ip nhrp map multicast 10.10.10.10
ip nhrp map 172.20.87.254 10.10.10.10
ip nhrp nhs 172.20.87.254
!
int tunnel 187
ip address 172.20.187.2 255.255.255.0
tunnel source 22.22.22.22
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
ip nhrp map multicast 20.20.20.20
ip nhrp map 172.20.187.254 20.20.20.20
ip nhrp nhs 172.20.187.254
!
router eigrp 87
network 10.86.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.86.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 10.10.10.10 255.255.255.255 12.12.12.11
ip route 20.20.20.20.255.255.255.255 22.22.22.21

*** Also Attached the config file for all three devices.

Thanks

1 Reply 1

abechara33
Level 1
Level 1

I have same question .... if anyone has a solution 


@ittechk4u1 wrote:

Hello Experts,
Can anyone please provide me a simple solution on how to do a dual ISP on a single HUB , and dual ISP on single SPOKE for redundancy and fail-over.

Here is my Topology



Please correct my Config.
Thanks in advance!
-----------------------------------------------------------------------------

HUB(10.87.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 10.10.10.10 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 20.20.20.20 255.255.255.248
!
int tunnel 87
ip address 172.20.87.254 255.255.255.0
tunnel source 10.10.10.10
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
no ip split-horizon eigrp 87
no ip next-hop-self eigrp 87
!
int tunnel 187
ip address 172.20.187.254 255.255.255.0
tunnel source 20.20.20.20
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
no ip split-horizon eigrp 187
no ip next-hop-self eigrp 187
!
router eigrp 87
network 10.87.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.87.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 11.11.11.11 255.255.255.255 10.10.10.9
ip route 12.12.12.12 255.255.255.255 10.10.10.9
ip route 21.21.21.21 255.255.255.255 20.20.20.19
ip route 22.22.22.22 255.255.255.255 20.20.20.19

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

Spoke1(10.85.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 11.11.11.11 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 21.21.21.21 255.255.255.248
!
int tunnel 87
ip address 172.20.87.1 255.255.255.0
tunnel source 11.11.11.11
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
ip nhrp map multicast 10.10.10.10
ip nhrp map 172.20.87.254 10.10.10.10
ip nhrp nhs 172.20.87.254
!
int tunnel 187
ip address 172.20.187.1 255.255.255.0
tunnel source 21.21.21.21
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
ip nhrp map multicast 20.20.20.20
ip nhrp map 172.20.187.254 20.20.20.20
ip nhrp nhs 172.20.187.254
!
router eigrp 87
network 10.85.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.85.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 10.10.10.10 255.255.255.255 11.11.11.10
ip route 20.20.20.20.255.255.255.255 21.21.21.20

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

Spoke2(10.86.0.0/24):

int gig0/1
desc *** ISP1 ***
ip address 12.12.12.12 255.255.255.248
!
int gig0/2
desc *** ISP2 ***
ip address 22.22.22.22 255.255.255.248
!
int tunnel 87
ip address 172.20.87.2 255.255.255.0
tunnel source 12.12.12.12
tunnel mode gre multipoint
ip nhrp network 10
ip nhrp authentication Password87
ip nhrp map multicast dynamic
ip nhrp map multicast 10.10.10.10
ip nhrp map 172.20.87.254 10.10.10.10
ip nhrp nhs 172.20.87.254
!
int tunnel 187
ip address 172.20.187.2 255.255.255.0
tunnel source 22.22.22.22
tunnel mode gre multipoint
ip nhrp network 20
ip nhrp authentication Password187
ip nhrp map multicast dynamic
ip nhrp map multicast 20.20.20.20
ip nhrp map 172.20.187.254 20.20.20.20
ip nhrp nhs 172.20.187.254
!
router eigrp 87
network 10.86.0.0 0.0.255.255
network 172.20.87.0 0.0.0.255
no auto-summary
!
router eigrp 187
network 10.86.0.0 0.0.255.255
network 172.20.187.0 0.0.0.255
no auto-summary
!
ip route 10.10.10.10 255.255.255.255 12.12.12.11
ip route 20.20.20.20.255.255.255.255 22.22.22.21

 

*** Also Attached the config file for all three devices.

Thanks