IOS version supported?

Hello,

I have two routers

- CISCO2951, IOS 2951-UNIVERSALK9_NPE-M), Version 15.1(3)T

Branch office, GRE tunnel, Internet acces

- CISCO3945, IOS C3900-UNIVERSALK9_NPE-M), Version 15.1(3)T

Main office, GRE tunnel, Internet acces

I've installed NetFlow Analyzer 8.6 8600, but there are very strange results on routers:

CISCO2951 could see some data, but it is not full, and interfaces load is not seems like as in the show interfaces command

CISCO3945 even dont showes traffic in some directions at all (see attachement)

Configuration 3945:

ip flow-cache timeout active 1
ip flow-export source Loopback0
ip flow-export version 5
ip flow-export destination 192.168.2.49 9996
ip flow-top-talkers
top 20
sort-by bytes
cache-timeout 10000

interface Loopback0
ip address 172.16.127.3 255.255.255.255
ip nbar protocol-discovery
ip flow ingress
ip flow egress
ip ospf network point-to-point
!
interface Tunnel0
ip address 172.16.100.9 255.255.255.252
ip nbar protocol-discovery
ip flow ingress
ip flow egress
ip ospf network point-to-point
tunnel source 62.141.69.157
tunnel destination 195.68.165.219
!
interface GigabitEthernet0/0
description LAN
ip address 192.168.3.1 255.255.255.248
ip nbar protocol-discovery
ip flow ingress
ip flow egress
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
ip nbar protocol-discovery
ip flow ingress
shutdown
duplex auto
speed auto
!
interface GigabitEthernet0/2
no ip address
ip nbar protocol-discovery
ip flow ingress
shutdown
duplex auto
speed auto
!
interface FastEthernet0/0/0
description CENTER_OUT
bandwidth 8192
ip address xx.xx.xx.xx 255.255.255.248
ip nbar protocol-discovery
ip flow ingress
ip flow egress
no ip route-cache cef
no ip route-cache
duplex auto
speed auto
service-policy output 8192kb-shaper
!
interface FastEthernet0/0/1
no ip address
ip nbar protocol-discovery
ip flow ingress
shutdown
duplex auto
speed auto
!
interface Serial0/1/0
no ip address
ip nbar protocol-discovery
ip flow ingress
shutdown
clock rate 2000000
!
interface Serial0/1/1
no ip address
ip nbar protocol-discovery
ip flow ingress
shutdown
clock rate 2000000