trunk mode is used to prioritize 802.1p portion of dot1q header OR classify traffics. _____
From: [email protected] [mailto:[email protected]] On Behalf Of bruno Sent: Tuesday, January 18, 2011 10:19 PM To: ccie_voice Subject: [OSL | CCIE_Voice] why trunk mode on ESW? Dear all in vol1 network infrastrure, why we need to configure trunk mode on esw,why not access mode .i have test the access mode is ok. SITEB(config)#int range f0/1/0 -3 SITEB(config-if-range)# switchport trunk native vlan 602 SITEB(config-if-range)# switchport mode trunk SITEB(config-if-range)# switchport voice vlan 502 SITEB(config-if-range)#description ***CONNECT TO IP PHONE*** SITEC#show interfaces f0/1/0 switchport Name: Fa0/1/0 Switchport: Enabled Administrative Mode: trunk Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: Disabled Access Mode VLAN: 0 ((Inactive)) Trunking Native Mode VLAN: 602 (DATA-VLAN) Trunking VLANs Enabled: ALL Trunking VLANs Active: 1,502,602 Protected: false Priority for untagged frames: 0 Override vlan tag priority: FALSE Voice VLAN: 502 Appliance trust: none Best Regards, bruno
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