Cisco VTP 设置

 

问：
不是同一个域的交换机不会同步？

SW1(config)#int f0/15
SW1(config-if)#no sh
SW1(config-if)#switchport trunk encapsulation dot1q
SW1(config-if)#switchport mode trunk
SW1(config-if)#
*Mar 1 00:04:55.047: %DTP-5-TRUNKPORTON: Port Fa0/15 has become dot1q trunk
SW1(config-if)#exit
SW1(config)#exit
SW1#sh int f0/15 trunk-----------------查看是否配置成TRUNK

Port      Mode         Encapsulation Status        Native
Fa0/15    on           802.1q         trunking      1

Port      Vlans allowed on trunk
Fa0/15    1-1005

Port      Vlans allowed and active in management domain
Fa0/15    1

Port      Vlans in spanning tree forwarding state and not pruned
Fa0/15    1
SW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SW1#vlan database
SW1(vlan)#vtp ?
client       Set device client mode.
domain       Set the name of the VTP administrative domain.
password     Set the password for the VTP administrative domain.
pruning      Set the administrative domain to permit pruning.
server       Set the device to server mode.
transparent Set the device to transparent mode.
v2-mode      Set the administrative domain to V2 mode.

SW1(vlan)#vtp server－－－－－－－－－－－－－－配置VTP的3种模式，有的在全局模式下配置，这个与IOS版本有关
Device mode already VTP SERVER.
SW1(vlan)#vtp domain test－－－－－－－指定域名
Changing VTP domain name from NULL to test
SW1(vlan)#vtp password cisco
Setting device VLAN database password to cisco.
SW1(vlan)#vlan 2
VLAN 2 added:
    Name: VLAN0002
SW1(vlan)#vlan 3
VLAN 3 added:
    Name: VLAN0003
SW1(vlan)#exit
APPLY completed.
Exiting....
SW1#

SW1#sh vtp status －－－－－－－－－－查看VTP信息
VTP Version                     : 2－－－－－支持VTP2版本
Configuration Revision          : 1－－－－－－－－修订号？更新号？
Maximum VLANs supported locally : 256
Number of existing VLANs        : 7－－－－－－VLAN的数量
VTP Operating Mode              : Server
VTP Domain Name                 : test
VTP Pruning Mode                : Disabled－－－－修剪
VTP V2 Mode                     : Disabled－－－－－VTP版本2没有使用，现在是版本1
VTP Traps Generation            : Disabled
MD5 digest                      : 0x85 0x35 0x60 0x9F 0xE6 0x4C 0x82 0x85
Configuration last modified by 0.0.0.0 at 3-1-93 19:37:15
Local updater ID is 0.0.0.0 (no valid interface found)

SW1#vlan database
SW1(vlan)#vtp pruning
Pruning switched ON
SW1(vlan)#vtp ?
client       Set the device to client mode.
domain       Set the name of the VTP administrative domain.
password     Set the password for the VTP administrative domain.
pruning      Set the administrative domain to permit pruning.
server       Set the device to server mode.
transparent Set the device to transparent mode.
v2-mode      Set the administrative domain to V2 mode.

SW1(vlan)#vtp v2-mode －－－－－－－－启用版本2
V2 mode enabled.
SW1(vlan)#exit
APPLY completed.
Exiting....
SW1#sh vtp status
VTP Version                     : 2
Configuration Revision          : 2
Maximum VLANs supported locally : 256
Number of existing VLANs        : 7
VTP Operating Mode              : Server
VTP Domain Name                 : test
VTP Pruning Mode                : Enabled－－－－－－－－一般要启用修剪
VTP V2 Mode                     : Enabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0xF5 0x51 0xE4 0xBC 0x1E 0x89 0xC4 0x28
Configuration last modified by 0.0.0.0 at 3-1-93 19:59:24
Local updater ID is 0.0.0.0 (no valid interface found)
SW1#

---------------------------------------------
SW2(config)#int f0/15
SW2(config-if)#no sh
SW2(config-if)#sw
*Mar 1 01:22:30.359: %LINK-3-UPDOWN: Interface FastEthernet0/15, changed state to up
*Mar 1 01:22:31.359: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/15, changed state to up
SW2(config-if)#switchport trunk encapsulation dot1q
SW2(config-if)#switchport mode trunk
SW2#sh int f0/15 trunk－－－－－－－－－－查看TRUNK是否已经配置好

Port      Mode         Encapsulation Status        Native vlan
Fa0/15    on           802.1q         trunking      1

Port      Vlans allowed on trunk
Fa0/15    1-1005

Port      Vlans allowed and active in management domain
Fa0/15    1

Port      Vlans in spanning tree forwarding state and not pruned
Fa0/15    1
SW2#vlan database
SW2(vlan)#vtp client
Setting device to VTP CLIENT mode.
SW2(vlan)#vtp domain test
Domain name already set to test .
SW2(vlan)#vtp password cisco
Setting device VLAN database password to cisco.
SW2(vlan)#exit
In CLIENT state, no apply attempted.
Exiting....
SW2#sh vlan-switch －－－－－－－－－－－－－－当SW1建立 VLAN2 和 VLAN3 时查看，表明在CLIENT模式下：可以与服务模式进行同步

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/0, Fa0/1, Fa0/2, Fa0/3
                                                Fa0/4, Fa0/5, Fa0/6, Fa0/7
                                                Fa0/8, Fa0/9, Fa0/10, Fa0/11
                                                Fa0/12, Fa0/13, Fa0/14
2    VLAN0002                         active   
3    VLAN0003                         active   
1002 fddi-default                     active   
1003 token-ring-default               active   
1004 fddinet-default                  active   
1005 trnet-default                    active   

VLAN Type SAID       MTU   Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet 100001     1500 -      -      -        -    -        1002   1003
2    enet 100002     1500 -      -      -        -    -        0      0  
3    enet 100003     1500 -      -      -        -    -        0      0  
1002 fddi 101002     1500 -      0      -        -    -        1      1003
1003 tr    101003     1500 1005   0      -        -    srb      1      1002
1004 fdnet 101004     1500 -      -      1        ibm -        0      0  
1005 trnet 101005     1500 -      -      1        ibm -        0      0  
SW2#

 

----------------------------------------------
SW3(config)#int f0/1
SW3(config-if)#no sh
SW3(config-if)#switchport trunk en dot1q
SW3(config-if)#switchport mode trunk

SW3(config)#int f0/2
SW3(config-if)#no sh
SW3(config-if)#switchport trunk encapsulation dot1q
SW3(config-if)#switchport mode trunk
SW3(config-if)#
SW3#sh interfaces f0/1 trunk

Port      Mode         Encapsulation Status        Native vlan
Fa0/1     on           802.1q         trunking      1

Port      Vlans allowed on trunk
Fa0/1     1-1005

Port      Vlans allowed and active in management domain
Fa0/1     1

Port      Vlans in spanning tree forwarding state and not pruned
Fa0/1     1
SW3#sh int f0/2 trunk

Port      Mode         Encapsulation Status        Native vlan
Fa0/2     on           802.1q         trunking      1

Port      Vlans allowed on trunk
Fa0/2     1-1005

Port      Vlans allowed and active in management domain
Fa0/2     1

Port      Vlans in spanning tree forwarding state and not pruned
Fa0/2     1

SW3#vlan database
SW3(vlan)#vtp transparent －－－－－－－－－配置成透明模式
Setting device to VTP TRANSPARENT mode.
SW3(vlan)#vtp domain test
Domain name already set to test .
SW3(vlan)#vtp password cisco－－－－－－－－－－－－－－－－－安全，防止不明身份交换机进入到TEST域中
Setting device VLAN database password to cisco.
SW3(vlan)#exit
APPLY completed.
Exiting....
SW3#sh vlan-switch

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/0, Fa0/3, Fa0/4, Fa0/5
                                                Fa0/6, Fa0/7, Fa0/8, Fa0/9
                                                Fa0/10, Fa0/11, Fa0/12, Fa0/13
                                                Fa0/14, Fa0/15
1002 fddi-default                     active   
1003 token-ring-default               active   
1004 fddinet-default                  active   
1005 trnet-default                    active   

VLAN Type SAID       MTU   Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet 100001     1500 -      -      -        -    -        1002   1003
1002 fddi 101002     1500 -      0      -        -    -        1      1003
1003 tr    101003     1500 1005   0      -        -    srb      1      1002
1004 fdnet 101004     1500 -      -      1        ibm -        0      0  
1005 trnet 101005     1500 -      -      1        ibm -        0      0  
SW3#