04-26-2015 03:18 AM - last edited on 03-25-2019 08:34 PM by ciscomoderator
Cisco IP Phone 3905 is not getting voice lan information from 3com switch.The phone is not registering.
04-26-2015 11:47 PM
Use the command
# lldp admin-status rx
on each port you have a 3905 plugged into.
GTG
04-27-2015 12:14 AM
Gordon,
After the add the cmd also its not taking voice vlan.
Please see the interface level cmds. I configured.
interfac gib 1/0/19
port link-type trunk
port trunk permit vlan 1 220 240
port trunk pvid vlan 220
undo voice vlan mode auto
voice vlan 240 enable
broadcast-suppression pps 3000
undo jumboframe enable
poe enable
stp edged-port enable
lldp admin-status rx
04-27-2015 12:23 AM
Our suggested 3Com configuration is:
# lldp enable
# lldp admin-status rx # port link-type hybrid # port hybrid vlan 9999 tagged # lldp voice-vlan 9999
GTG
04-27-2015 01:41 AM
we configured with as you mentioned.But still it is not getting voice vlan.
Voice vlan 240
Data vlan 220
Please see the below configuration on interface level:
interface GigabitEthernet1/0/46
port link-type hybrid
port hybrid vlan 240 tagged
port hybrid vlan 1 220 untagged
broadcast-suppression pps 3000
undo jumboframe enable
poe enable
stp edged-port enable
lldp admin-status rx
Please let me know if any change needed.
04-27-2015 01:47 AM
You appear to be missing the command:
# lldp voice-vlan 240
From the port config.
GTG
04-27-2015 01:59 AM
3COM switch not allowing to config below cmd.
#lldp voice-vlan 240
04-27-2015 02:27 AM
Any thing we need to do on core switch level. Core switch is also 3COM switch. But except 3905 phone, all other models of phones are working fine.
04-27-2015 02:35 AM
It's nothing to do with your core switch: It's just some funny interaction between your edge switch and the phone. Here's another way to try configuring the 3Com edge switch:
Global level:
# lldp compliance cdp
Port level:
# lldp admin-status rx # voice vlan 240 enable
GTG
04-27-2015 02:47 AM
Already we tried with the above cmds. but no result
04-27-2015 02:48 AM
In which case I'm out. Those are the two methods we use here to get 3Com switches to support the 3905 phones.
Sorry.
GTG
04-27-2015 02:49 AM
interface GigabitEthernet1/0/19
port link-type hybrid
port hybrid vlan 240 tagged
port hybrid vlan 1 220 untagged
undo voice vlan mode auto
voice vlan 240 enable
broadcast-suppression pps 3000
undo jumboframe enable
poe enable
stp edged-port enable
lldp admin-status rx
lld compliance cd is enabled on global
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