Cisco WS-C3750-48PS-S switch Port configuration for Non-cisco IP phone(Yealink SIP-T21P E2) ?

[vasanth77]

Hi ,

I've a setup with non-cisco Ip phone working with cisco switches

the normal configuration is not working

I'm configuring both access vlan and voice vlan but whatever I configure as access VLAN ,from that VLAN both IP phones and PC getting IP address(i.e same access vlan IP)

Can anybody tell how to configure dual(PC+ IP phone non-cisco) on the WS-C3750-48PS-S switch?

Is there any extra configuration required.

Data - VLAN45, Voice -VLAN400 

This configuration is working only for Voice VLAN400 and PC also getting Ip address from Voice vlan

interface FastEthernet1/0/1
switchport access vlan 400
switchport mode access
spanning-tree portfast

This configuration is working with data subnet for both Ip phones and Pc's.

switchport access vlan 45
switchport mode access
switchport voice vlan 400

thanks in advance

by 

vasanth

[Paul Chapman]

Hi -

Have you turned on LLDP?  Many non-Cisco vendors will use that protocol instead of CDP.

PSC

[vasanth77]

Hi Paul,

where do I turn on the LLDP ? On the switch or on the phone?

the phone will support both cdp and LLDP but lldp only enable on the phone.

thank you

[Paul Chapman]

Hi -

Just these commands:

config t
lldp run
end
copy run start

PSC

[vasanth77]

Thank you 

[johnd2310]

Hi,

If you phone supports vlans, you could configure your phone to tag vlan 400 and on the switch set a trunk port to tag vlan 400 with native vlan 45. e.g.

switchport mode trunk

switchport trunk native vlan 45

switchport trunk allowed vlan 400

Thanks

John

[vasanth77]

Hi John,

I've tried this configuration and it's getting the IP from the native VLAN for both Phone and PC.

But I'm not sure about phone settings which you are saying to tag vlan 400 on the phone.

Thanks for your quick response.

by,

vasanth

[johnd2310]

Hi,

In the phone configuration, set the vlan to 400

Thanks

John