****Primary Router config ****

 interface FastEthernet0/0
 description ***corporate-primary-LAN-Inside***
 ip address 10.10.1.1 255.255.255.0
 duplex full
 speed 100
!
interface FastEthernet0/1
 description ***To-vendor-Outside***
 ip address 10.99.0.66 255.255.255.248
 no ip redirects
 duplex full
 speed 100
 no cdp enable
!
router eigrp 1
 redistribute static metric 1000 10 255 1 1500 route-map vendor
 network 10.0.0.0
 passive-interface fa0/1
 no auto-summary
!
ip forward-protocol nd
!
ip route 160.20.20.0 255.255.255.0 10.99.0.68 tag 10 name vendor
ip route 160.20.30.0 255.255.255.0 10.99.0.68 tag 10 name vendor
ip route 160.20.40.0 255.255.255.0 10.99.0.68 tag 10 name vendor
ip route 160.20.60.0 255.255.255.0 10.99.0.68 tag 10 name vendor
!
route-map vendor permit 10
 description ***Redistribute static into eigrp tag 10***
 match tag 10


****Secondary Router config ****


interface FastEthernet0/0
 description ***corporate-secondary-LAN-Inside***
 ip address 10.20.1.1 255.255.255.0
 duplex full
 speed 100
!
interface FastEthernet0/1
 description ***To-vendor-Outside***
 ip address 10.99.0.67 255.255.255.248
 no ip redirects
 duplex full
 speed 100
 no cdp enable
!
router eigrp 1
 redistribute static metric 1000 11 255 1 1500 route-map vendor
 network 10.0.0.0
 passive-interface fa0/1
 no auto-summary
!
ip forward-protocol nd
ip route 160.20.20.0 255.255.255.0 10.99.0.68 tag 20 name vendor
ip route 160.20.30.0 255.255.255.0 10.99.0.68 tag 20 name vendor
ip route 160.20.40.0 255.255.255.0 10.99.0.68 tag 20 name vendor
ip route 160.20.60.0 255.255.255.0 10.99.0.68 tag 20 name vendor
!
route-map vendor permit 10
 description ***Redistribute static into eigrp tag 20***
 match tag 20