Hi try this:
HUB:
!
interface vsat
ip address 172.16.1.5
no shutdown
no fair-queue
interface Serial0/0
ip address 172.16.1.1
no shutdown
clockrate 2000000
no fair-queue
!
interface FastEthernet0/1
ip address 192.168.117.1
no ip mroute-cache
duplex auto
speed auto
!
!--- Enable a routing protocol to send/receive dynamic
!--- updates about the private networks over the tunnels.
router eigrp 1
network 172.16.1.0 0.0.0.255
network 192.168.117.0
no auto-summary
!
ip route 192.168.115.0 255.255.255.0 172.16.1.6 190
Spoke:
!
interface vsat
ip address 172.16.1.
no shutdown
no fair-queue
interface Serial0/0
ip address 172.16.1.2
no shutdown
clockrate 2000000
no fair-queue
!
interface FastEthernet0/1
ip address 192.168.115.1
no ip mroute-cache
duplex auto
speed auto
!
!--- Enable a routing protocol to send/receive dynamic
!--- updates about the private networks over the tunnels.
router eigrp 1
network 172.16.1.0 0.0.0.255
network 192.168.115.0
no auto-summary
!
ip route 192.168.117.0 255.255.255.0 172.16.1.2 190
HSRP
int fa1
stanby priority 110
standby preemt
standby ip 192.168.115.1
int fa2
standby preemt
standby ip 192.168.115.1
BR,
Bjornarsb