>Ну так покажите эти чудо настройки с обоих портов!
interface FastEthernet0/4
description HUB
switchport access vlan 4
no ip address
interface FastEthernet0/14
description USER
switchport access vlan 4
no ip address
interface Vlan4
description office
ip address 172.20.22.1 255.255.255.0
ip rip authentication mode md5
ip rip authentication key-chain XXX
ntp broadcast
ip dhcp pool office
network 172.20.22.0 255.255.255.0
default-router 172.20.22.1
netbios-node-type h-node
dns-server 172.20.20.4 172.20.20.7
netbios-name-server 172.20.20.5
domain-name office
lease 90