> Покажите что у вас настроено. Вот 1-ый коммутатор 2950
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
hostname switch2
aaa new-model
enable secret 5 secret
username name secret 5 secret
wrr-queue bandwidth 1 5 50 100
wrr-queue cos-map 1 0 1 2 4 6
wrr-queue cos-map 2 3
wrr-queue cos-map 3 5
wrr-queue cos-map 4 7
ip subnet-zero
spanning-tree mode rapid-pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport mode access
no ip address
spanning-tree bpdufilter enable
.............. (здесь все интерфейсы)
!
interface FastEthernet0/22 (это низкоприоритетный)
switchport access vlan 4
no ip address
mls qos cos 1
mls qos cos override
spanning-tree bpdufilter enable
!
interface FastEthernet0/23
no ip address
spanning-tree bpdufilter enable
!
interface FastEthernet0/24
no ip address
spanning-tree bpdufilter enable
!
interface GigabitEthernet0/1
description wifi link
switchport trunk native vlan 23
switchport mode trunk
switchport nonegotiate
no ip address
speed 100
interface GigabitEthernet0/2
description fast ddl link
switchport trunk native vlan 23
switchport mode trunk
switchport nonegotiate
no ip address
speed 100
interface Vlan1
ip address 192.168.1.19 255.255.255.0
no ip route-cache
no ip http server
А это второй свитч 3550
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
hostname Switch1
!
enable secret 5 secret
username name secret 5 secret
aaa new-model
aaa session-id common
ip subnet-zero
ip domain-name local
!
no file verify auto
spanning-tree mode rapid-pvst
spanning-tree extend system-id
spanning-tree uplinkfast max-update-rate 500
!
vlan internal allocation policy ascending
interface FastEthernet0/1
switchport mode access
no cdp enable
spanning-tree bpdufilter enable
........ все интерфейсы
interface FastEthernet0/22 то самый порт
switchport access vlan 4
switchport mode access
mls qos cos 1
mls qos cos override
no cdp enable
spanning-tree bpdufilter enable
!
interface FastEthernet0/23
description trunk via wi-fi link
switchport trunk encapsulation dot1q
switchport trunk native vlan 23
switchport mode trunk
switchport nonegotiate
speed 100
no cdp enable
!
interface FastEthernet0/24
description trunk via ddl-link
switchport trunk encapsulation dot1q
switchport trunk native vlan 23
switchport mode trunk
switchport nonegotiate
shutdown
speed 100
no cdp enable
!
interface GigabitEthernet0/1
switchport mode dynamic desirable
shutdown
no cdp enable
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
shutdown
no cdp enable
!
interface Vlan1
ip address 192.168.1.20 255.255.255.0
no ip route-cache
no ip mroute-cache
!
ip classless
no ip http server
no ip http secure-server
!
logging facility local6
logging 192.168.1.11
no cdp run
radius-server source-ports 1645-1646
control-plane
line con 0
line vty 0 4
transport input telnet
line vty 5 15
transport input ssh
end
Вот такой конфиг....