Есть FreeBSD 6.4 и Catalyst 2950-12
Собственно проблема заключается в том что если поднять один vlan
то остальные становятся в shutdown. Подскажите, как сделать так чтобы все 4 влана
были бы в no shutdown?

На FreeBSD:
#cat rc.conf
cloned_interfaces="vlan16"
cloned_interfaces="vlan17"
cloned_interfaces="vlan18"
cloned_interfaces="vlan20"
ifconfig_rl0="inet 192.168.0.1 netmask 255.255.255.0"
ifconfig_vlan16="inet 172.16.0.2 netmask 255.255.0.0 vlan 16 vlandev rl0 mtu 1500 up"
ifconfig_vlan17="inet 172.17.0.2 netmask 255.255.0.0 vlan 17 vlandev rl0 mtu 1500 up"
ifconfig_vlan18="inet 172.18.0.2 netmask 255.255.0.0 vlan 18 vlandev rl0 mtu 1500 up"
ifconfig_vlan20="inet 172.20.0.2 netmask 255.255.0.0 vlan 20 vlandev rl0 mtu 1500 up"

Кусок конфига Cisco:
interface FastEthernet0/1
description SMOTRIT V NET16
switchport access vlan 16
switchport mode access
!
interface FastEthernet0/2
description SMOTRIT V NET17
switchport access vlan 17
switchport mode access
!
interface FastEthernet0/3
description SMOTRIT V NET18
switchport access vlan 18
switchport mode access
!
interface FastEthernet0/4
description SMOTRIT V NET20
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/12
description TRUNK TO GATE
switchport trunk allowed vlan 16-18,20
switchport mode trunk
!
!
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
interface Vlan16
description NET16
no ip address
no ip route-cache
shutdown
!
interface Vlan17
description NET17
no ip address
no ip route-cache
shutdown
!
interface Vlan18
description NET18
ip address 172.18.0.3 255.255.0.0
no ip route-cache
!
interface Vlan20
description NET20
no ip address
no ip route-cache
shutdown

Вот что показывает sh vlan:
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12
2    VLAN0002                         active
16   vlan16                           active    Fa0/1
17   vlan17                           active    Fa0/2
18   vlan18                           active    Fa0/3
20   vlan20                           active    Fa0/4
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        0      0
2    enet  100002     1500  -      -      -        -    -        0      0
16   enet  100016     1500  -      -      -        -    -        0      0
17   enet  100017     1500  -      -      -        -    -        0      0
18   enet  100018     1500  -      -      -        -    -        0      0
20   enet  100020     1500  -      -      -        -    -        0      0

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1002 fddi  101002     1500  -      -      -        -    -        0      0
1003 tr    101003     1500  -      -      -        -    -        0      0
1004 fdnet 101004     1500  -      -      -        ieee -        0      0
1005 trnet 101005     1500  -      -      -        ibm  -        0      0

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------