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12-26-2013 01:27 AM
12-26-2013 01:27 AM
Voice Vlan and DHCP
One of our customer having 2 5800 switches IRF as the core switch and 5120 switches as edge switches.recently they deployed Avaya PABX system and we created a new vlan for Avaya.on trunk links we permited the voice vlan and all access ports tagged for voice vlan and untagged for the data vlan(PC is connecting to the phone).
Separate DHCP server configured and DHCP scope created for voice.and DHCP relay enabled on the voice vlan interface.
we are having following issues once we connected Avaya phones to the switch ports,
1. phones are not identifying the vlan id and not getting any DHCP ip,Waiting for LLDP message is appear on the phone screen
2.once we configure the vlan id on the phone , phone is taking IPs from DHCP scope
3.Some time phnoe is identifing the vlan id correctly but it is not taking any ip dhcp scope
4.static vlan, ip configuration is working fine
for testing purpose we created a dhcp scope for voice on the switch but the problem is same.
Can anybody help me to resolve this issue
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12-31-2013 10:05 AM
12-31-2013 10:05 AM
Re: Voice Vlan and DHCP
We had a simular issue with our Cisco phones until we added the oui's of the phones to the voice vlan. We had several to add, so we wound up removing several the defaults below is a small snip of our config:
undo voice vlan mac-address 00d0-1e00-0000
undo voice vlan mac-address 00e0-7500-0000
undo voice vlan mac-address 00e0-bb00-0000
voice vlan mac-address 000c-ce00-0000 mask ffff-ff00-0000 description Cisco IP Phone
voice vlan mac-address 000d-2800-0000 mask ffff-fe00-0000 description Cisco IP Phone
voice vlan mac-address 000d-bc00-0000 mask ffff-fe00-0000 description Cisco IP Phone
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03-06-2014 02:06 AM
03-06-2014 02:06 AM
Re: Voice Vlan and DHCP
has your problem been solved yet ?!