If you are using 3560's, this has been my experience as well. If you are unfortunate enough to be using 3550XL's, then the whole game is different.
The 3550XL way: interface FastEthernet0/5 switchport trunk encapsulation dot1q switchport trunk native vlan 68 switchport mode trunk switchport voice vlan 66 switchport priority extend cos 0 spanning-tree portfast The data vlan has to be indicated as native. Again, this has been my experience. -b -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Peter Rathlev Sent: Friday, August 28, 2009 3:44 PM To: Yuri Bank Cc: [email protected] Subject: Re: [c-nsp] Data VLAN/Voice VLAN On Fri, 2009-08-28 at 15:20 -0700, Yuri Bank wrote: > interface FastEthernet0/4 > description phone > switchport access vlan 77 > switchport trunk native vlan 55 > switchport mode access > switchport voice vlan 66 > > In this configuration, data is placed on vlan 55? From what I've read > on other forums and such is that the data would be on the configured > access vlan ( 77 ). Unfortunately I do not have an iphone to test > this. Could anyone give me some clarity? Untagged traffic on the port would be VLAN 77, since this is what you configured at access VLAN and since the port is in forced access mode. A compatible device (i.e. one the presents itself as a phone via CDP) would activate the voice VLAN and thus allow tagged incoming traffic on VLAN 66. This requires the switch (and port) to have CDP enabled by the way. The trunk configuration is ignored when you issue "switchport mode access". If you only need a stand-alone phone you can just use a simple access port in the voice VLAN. Regards, Peter _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
