HUB-A#show run
Building configuration...

Current configuration : 2113 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname HUB-A
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1 
no network-clock-participate wic 0 
no aaa new-model
ip subnet-zero
no ip cef
!
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!
!
ip ips po max-events 100
no ftp-server write-enable
!
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! 
crypto keyring dynamic_spokes 
  pre-shared-key address 0.0.0.0 0.0.0.0 key HUBA
!
crypto isakmp policy 1
 encr 3des
 authentication pre-share
 group 2
 lifetime 21600
crypto isakmp keepalive 10 10
no crypto isakmp ccm
crypto isakmp profile dynamic
   description Dynamic spoke router connections
   keyring dynamic_spokes
   match identity address 0.0.0.0 
   no keepalive
!
crypto ipsec security-association idle-time 300
!
crypto ipsec transform-set vpn-set-1 esp-3des esp-md5-hmac 
!
crypto dynamic-map dynamic 3
 set security-association idle-time 60
 set transform-set vpn-set-1 
 set isakmp-profile dynamic
!
!
crypto map vpn 1000 ipsec-isakmp dynamic dynamic 
!
bridge irb
!
!
!
interface Tunnel2
 description Primary Tunnel to SpokeA
 bandwidth 1024
 ip unnumbered Loopback0
 ip tcp adjust-mss 1340
 keepalive 10 3
 tunnel source Loopback1
 tunnel destination 172.20.66.40
 bridge-group 1
!
interface Loopback0
 ip address 172.25.210.1 255.255.255.255
!
interface Loopback1
 ip address 172.20.66.1 255.255.255.255
!
interface FastEthernet0/0
 description Connection to Internet
 ip address 101.0.0.1 255.255.255.252
 speed 100
 full-duplex
 crypto map vpn
!
interface FastEthernet0/1
 description Connection to HUB-B [B2B]
 ip address 10.0.0.2 255.255.255.0
 speed 100
 full-duplex
 no keepalive
!
interface BVI1
 ip address 192.168.1.1 255.255.255.0
!
router eigrp 100
 network 172.25.210.1 0.0.0.0
 no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 101.0.0.2
!
!
ip http server
no ip http secure-server
!
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route-map REVERSE-ROUTE permit 10
 match tag 100
!
!
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control-plane
!
bridge 1 protocol ieee
bridge 1 route ip
!
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line con 0
line aux 0
line vty 0 4
 privilege level 15
 no login
!
!
end

HUB-A#