1.簡介
在生產環境中,一般IP語音電話,網絡視頻這一類的數據,都希望延遲,抖動小一點,流量傳輸優先級高一點。於是可以通過配置voice vlan對數據進行標記,以便滿足對數據流的傳輸要求。voice vlan配置很簡單,思科和華爲公用一個拓撲圖。
2.思科
1.創建數據vlan和語音vlan
Switch(config)#vlan 30 ---->數據vlan
Switch(config)#vlan 40 ----->語音vlan
2.啓動LLDP
Switch(config)#lldp run ----->思科也可以用CDP發現語音vlan配置
3.配置語音和數據vlan
Switch(config)#int ether0/1 ---->不要糾結端口與拓撲圖不一致,以實際端口爲準
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 30
Switch(config-if)#switchport voice vlan 40
是不是覺得很奇怪,一般access不是隻能通過一個vlan嗎?voice不受影響哦!
4.查看配置
Switch#show int ether0/1 switchport
Name: Et0/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Access Mode VLAN: 30 (VLAN0030)
Voice VLAN: 40 (VLAN0040)
3.華爲
1.創建數據和語音vlan
[SW1]vlan batch 30 40
2.開啓lldp
[SW1]lldp enable
3.配置端口
[SW1] interface gigabitethernet 0/0/1 ----->別糾結端口與拓撲不一致,以實際端口爲準
[SW1-GigabitEthernet0/0/1]port link-type trunk
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan 30 ----->這裏不能將40加進來,不然報錯哦!
[SW1-GigabitEthernet0/0/1]voice-vlan 40 enable
[SW1-GigabitEthernet0/0/1] voice-vlan remark-mode vlan ----->這裏設置voice vlan的默認qos優先級,不過eNSP不支持該命令!
4.查看配置
[SW1]display voice-vlan 40 status
Voice VLAN Configurations:
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Voice VLAN ID : 40
Voice VLAN status : Enable
Voice VLAN aging time : 1440(minutes)
Voice VLAN 8021p remark : 6 ------>這裏是2層qos (即cos)優先級
Voice VLAN dscp remark : 46 ------>這裏就是3層qos (即dscp)優先級
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Port Information:
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Port Add-Mode Security-Mode Legacy
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GigabitEthernet0/0/1 Auto Security Disable