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9.3

Voice VLAN concepts

Asked by ValsparIT in Miscellaneous Networking, Voice Over IP

Tags: Cisco, VoIP, VLAN

Traning material has question:

Suppose switchport is configured w/ access VLAN 10, voice VLAN 110, and native VLAN 99. The explanation does not make sense, as it seems the output they have, seperated on two different pages is some bad editing. as it shows

sh run int fa1/0/1
swtichport trunk native vlan 99
switchport access vlan 63
switchport voice vlan 306

then they do a sh spanning-tree int fa1/0/1 and it says there are two vlans vlan 10 and vlan 110 and they say vlan 10 is being used as data VLAN  from IP Phone.

I would really like to know how it works if indeed native vlan99, access vlan 10, and voice vlan 110 were all configured on the same interface. My best guess is the following:

native vlan 99 means that there is an 802.1q trunk
access vlan 10 means that the switch will tag the data from the phone with vlan 10 (howevre all other documentation I have read says that the data traffic from the pc will be sent untagged using the native vlan. In that case the pc data would be sent untagged using vlan 99.
vlice vlan 110 means that the voice will be tagged w/ vlan 110, and also be using the 802.1p bits for priority forwarding.

So what is the vlan, 99 or 110, that the data from the pc is going to be sent as?
If it is sent as vlan 10, will it be tagged or untagged?

I am on pins and needles to get the solution.

Thank you,

Sally
[+][-]12/22/08 06:40 AM, ID: 23226659Accepted Solution

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About this solution

Zones: Miscellaneous Networking, Voice Over IP
Tags: Cisco, VoIP, VLAN
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Solution Provided By: giltjr
Participating Experts: 1
Solution Grade: A
 
 
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