Practical VLAN question.
/usr
Member Posts: 1,768 ■■■□□□□□□□
in CCNA & CCENT
This isn't about Cisco equipment, but I'm trying to apply my ICND2 study to the scenario, so I figured I'd post it here.
I'm trying to setup voice VLANs on some 3Com switches / VoIP equipment.
My question is...in the switch, you must set all ports to "Auto" in VLAN 2, which just means the switch recognizes the OUI of the phone and puts that switchport in the VLAN dynamically.
If the trunk ports are not set to send tagged packets in the voice VLAN, they would not forward any traffic across those ports, right?
I may very well be wrong.
I'm trying to setup voice VLANs on some 3Com switches / VoIP equipment.
My question is...in the switch, you must set all ports to "Auto" in VLAN 2, which just means the switch recognizes the OUI of the phone and puts that switchport in the VLAN dynamically.
If the trunk ports are not set to send tagged packets in the voice VLAN, they would not forward any traffic across those ports, right?
I may very well be wrong.
Comments
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BADfish10
Member Posts: 88 ■■□□□□□□□□
HI /USR
A few more details maybe helpful
What are you trying to achieve/what is the capabilities of the kit you are using?
Unfortunately different vendors have different ways of doing things! It may well be possible to do as you say and just assign a switchport to AUTO then when a connection is made the right VLAN is assigned to the port magic. For this to happen you can expect that some configurations may have to be done on the switch. The product documentation is you friend at this point some systems need you to name a VLAN a specific name for automatic assignment to work I may be wrong but the CAT 500 needs the VLAN to be called Cisco-Voice, I would sort of expect the same thing or at least a option having to be set on the switch to say this is the vlan say 10 is to be assigned for ip-phones dynamically.
A question about where the Vlan’s are from and how they get between switches. Have you got trunking working between switches correctly? This can be tested by manual assign a VLAN to a switchport on say switch 1 and then a port on switch 3 to the same Vlan and test communication between them. Or do these switches Stack and thus are looked at as one big switch?
On top of this do the ip handsets you have support inline data so you can have a pc off the back of the phones like allot of the Cisco phones allow you? This may add some more fun depending of the switch/Phone support again the documentation is the key.
This is just what I would look at first and may well be wrong
More detail would be helpful
J