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New Member

Cisco trunk port to VOIP phone

Hello,

We we have an office which is using a hosted IP provider but they just have 15 x non Cisco desk VOIP phones and have their PC's plugged into them all on VLAN 1.

I've created 2 VLANs there, 1 for Data and the other for Voice, would I just need to make the switch ports a trunk and set the phones to the voice vlan?

Any example port configs woud lbe great.  They don't have QoS either which I may add.

Thanks

5 REPLIES
Cisco Employee

Cisco trunk port to VOIP phone

Hi Andy,

Please find the configuration below. It should work fine without any issues.

vlan 301

name Data

!

vlan 309

name VoIP

lldp run

interface FastEthernet0/9

description PC & IP Phone

switchport trunk encapsulation dot1q

switchport trunk native vlan 301

switchport trunk allowed vlan 301,309

switchport mode trunk

spanning-tree portfast trunk

spanning-tree bpduguard enable

Thanks & regards,

Karthick Murugan

CCIE#39285(R&S)

Thanks & Regards, Karthick Murugan CCIE#39285
New Member

Cisco trunk port to VOIP phone

Thanks,

That is how I did it, the only thing I have missing is "lldp run" what is that?


Cisco Employee

Cisco trunk port to VOIP phone

Hi Andy,

I am very glad that you got the configuration right.

LLDP is a replacement for CDP.

CDP is to detect the neighbor device(Cisco) and LLDP can be used for Avaya.

Thanks

Karthick Murugan

Thanks & Regards, Karthick Murugan CCIE#39285
New Member

Cisco trunk port to VOIP phone

Just one thing I noticed I didn't use the "switchport trunk native vlan x" would this be for anything untagged?

Cisco Employee

Cisco trunk port to VOIP phone

"switchport trunk native lan x" is the replacement for "switchport access vlan x" in both the cases the VLAN will not be tagged.

Thanks

Karthick Murugan

Thanks & Regards, Karthick Murugan CCIE#39285
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