Trunk 允许通过的vlan研究

新的ENSP显示

【配置1】

[sw1-GigabitEthernet0/0/1]dis this

#

interface GigabitEthernet0/0/1

port link-type trunk

undo port trunk allow-pass vlan 1 //不允许任何vlan通过

[sw1-GigabitEthernet0/0/1]dis port vl ac

T=TAG U=UNTAG

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Port Link Type PVID VLAN List

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GE0/0/1 trunk 1 - //接口还在 但是不允许任何vlan通过

GE0/0/2 hybrid 1 U: 1

GE0/0/3 hybrid 1 U: 1

GE0/0/4 hybrid 1 U: 1

[sw1-GigabitEthernet0/0/1]dis port v

Port Link Type PVID Trunk VLAN List

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GigabitEthernet0/0/1 trunk 1 -

GigabitEthernet0/0/2 hybrid 1 -

GigabitEthernet0/0/3 hybrid 1 -

GigabitEthernet0/0/4 hybrid 1 -

GigabitEthernet0/0/5 hybrid 1 -

【配置2】

[sw1-GigabitEthernet0/0/1]dis th

#

interface GigabitEthernet0/0/1

port link-type trunk

port trunk allow-pass vlan 2 to 4094 //允许所有vlan通过 默认vlan1也可以 不打tag

#

[sw1-GigabitEthernet0/0/1]dis port vl ac

T=TAG U=UNTAG

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Port Link Type PVID VLAN List

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GE0/0/1 trunk 1 U: 1

T: 10 20 30

GE0/0/2 hybrid 1 U: 1

GE0/0/3 hybrid 1 U: 1

GE0/0/4 hybrid 1 U: 1

[sw1-GigabitEthernet0/0/1]dis port v

Port Link Type PVID Trunk VLAN List

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GigabitEthernet0/0/1 trunk 1 1-4094 //trunk口 允许所有vlan通过 及时vlan不存在

GigabitEthernet0/0/2 hybrid 1 -

GigabitEthernet0/0/3 hybrid 1 -

GigabitEthernet0/0/4 hybrid 1 -

GigabitEthernet0/0/5 hybrid 1 -

【配置3】

[sw1-GigabitEthernet0/0/1]dis this

#

interface GigabitEthernet0/0/1

port link-type trunk

undo port trunk allow-pass vlan 1

port trunk allow-pass vlan 2 to 4094

#

[sw1-GigabitEthernet0/0/1]dis port vl ac

T=TAG U=UNTAG

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Port Link Type PVID VLAN List

-------------------------------------------------------------------------------

GE0/0/1 trunk 1 T: 10 20 30

GE0/0/2 hybrid 1 U: 1 //其他端口 默认vlan1 都是untag

GE0/0/3 hybrid 1 U: 1

[sw1-GigabitEthernet0/0/1]dis port v

Port Link Type PVID Trunk VLAN List

-------------------------------------------------------------------------------

GigabitEthernet0/0/1 trunk 1 2-4094 //trunk口允许通过的vlan为2-4094

GigabitEthernet0/0/2 hybrid 1 -

GigabitEthernet0/0/3 hybrid 1 -

GigabitEthernet0/0/4 hybrid 1 -

GigabitEthernet0/0/5 hybrid 1 -

GigabitEthernet0/0/6 hybrid 1 -

【配置4】

1 -

[sw1-GigabitEthernet0/0/2]dis this

#

interface GigabitEthernet0/0/2

port hybrid tagged vlan 10

port hybrid untagged vlan 20 30

#

[sw1-GigabitEthernet0/0/2]

[sw1-GigabitEthernet0/0/2]dis port vl ac

T=TAG U=UNTAG

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Port Link Type PVID VLAN List

-------------------------------------------------------------------------------

GE0/0/1 trunk 1 T: 10 20 30

GE0/0/2 hybrid 1 U: 1 20 30

T: 10

GE0/0/3 hybrid 1 U: 1

GE0/0/4 hybrid 1 U: 1

[sw1-GigabitEthernet0/0/2]dis port vl

Port Link Type PVID Trunk VLAN List

-------------------------------------------------------------------------------

GigabitEthernet0/0/1 trunk 1 2-4094 //表示trunk中允许通过的vlan

GigabitEthernet0/0/2 hybrid 1 10 //标识hybrid中打标签的vlan vlan 20 30

GigabitEthernet0/0/3 hybrid 1 -

GigabitEthernet0/0/4 hybrid 1 -

【配置5】

[sw1-GigabitEthernet0/0/2]dis this

#

interface GigabitEthernet0/0/2

port hybrid tagged vlan 10 40 50

port hybrid untagged vlan 20 30 60

[sw1-GigabitEthernet0/0/2]dis po vlan active

T=TAG U=UNTAG

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Port Link Type PVID VLAN List

-------------------------------------------------------------------------------

GE0/0/1 trunk 1 T: 10 20 30

GE0/0/2 hybrid 1 U: 1 20 30

T: 10 //由于vlan40 50 没有创建 并不显示

[sw1-GigabitEthernet0/0/2]dis po vlan

Port Link Type PVID Trunk VLAN List

-------------------------------------------------------------------------------

GigabitEthernet0/0/1 trunk 1 2-4094

GigabitEthernet0/0/2 hybrid 1 10 40 50 //hybrid口需要打tagged的vlan 并非真实存在的vlan vlan40 50 就没有创建

GigabitEthernet0/0/3 hybrid 1 -

注意上面的类型  trunk和hybrid 显示的是不一样的   trunk表示允许通过的vlan(即使vlan不存在也显示)    而hybrid表示需要打tagged的vlan (vlan不存在就不显示)

原文地址:https://www.cnblogs.com/yy50567893/p/13468370.html