James, thanks for the suggestion. I am just using native vlan and I did what you said and I believe it works :-)
interface FastEthernet2/0/2 description VOIP VLAN 100 switchport trunk encapsulation dot1q switchport trunk allowed vlan 1,100 switchport mode trunk duplex full speed 100 However, when I entered "spanning-tree portfast trunk", I received a warning message which says: "Warning: portfast should only be enabled on ports connected to a single host. Connecting hubs, concentrators, switches, bridges, etc... to this interface when portfast is enabled, can cause temporary bridging loops. Use with CAUTION" As the polycom phone is acting like a switch, I decided not to put that option in. ***Also, can I just confirm that with the current QOS (quality of service) settings on the polycom phones, the phone should have priority over the PC? Thanks in advance. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:asterisk-users- > [EMAIL PROTECTED] On Behalf Of James Sneeringer > Sent: Saturday, 1 March 2008 9:57 AM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [asterisk-users] Polycom IP600 + PC share same switch port > withVLAN > > As far as I can tell, with Polycom phones you cannot do what you're > asking (which is for the PC and the phone to be in the same VLAN while > the PC is connected to the phone). I don't know how they handle it > when the voice frames are untagged, but they definitely won't pass > tagged voice frames to the PC port: > > http://knowledgebase.polycom.com/KanisaPlatform/Publishing/616/12526_f.S AL > _PUBLIC_1_2.html > > Your switch port is configured for untagged frames on a single VLAN > (that's what "access" mode is). Polycom phones need voice and data to > be on separate VLANs in order for you to use the PC port. Since > Polycom phones apparently don't support the Cisco Voice VLAN feature, > you need to configure the port as a trunk port, which will allow you > to send multiple VLANs to the phone. The phone will take frames tagged > for your designated voice VLAN, and will pass the rest on to the PC > port. For example: > > interface FastEthernet2/0/1 > switchport trunk encapsulation dot1q > switchport trunk native vlan XXX > switchport trunk allowed vlan XXX,100 > switchport mode trunk > spanning-tree portfast trunk > > Replace XXX with whatever your PC VLAN is. Setting XXX as the native > VLAN for this port will cause frames in that VLAN to be untagged for > that port, which is what your PC probably expects. If it happens to be > 1, then it's the native VLAN by default. The last command may or may > not be available, depending on your version of IOS. If it isn't, > portfast just won't work and you're just stuck with STP negotiation > anytime the port bounces. > > -James > _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
