Simon
asked on
Cisco Voice VLAN mismatch warnings
We have warnings on some of our Cisco small business network switches; network performance/quality seems to be fine.
[21 Cisco PoE and non-PoE switches SG-200, SG-250HP and SG-500 currently on the network].
VoIP system configured throughout our network that has been up and running for the past 6 months without any problems.
The warning messages are recent, and came up on our SG-500 core switches [Flash memory logs]
Warning is declared as "%CDP-W-VOICE_VLAN_MISMATCH : Voice VLAN mismatch detected on interface X" - where X is the up-link port number connecting to core/edge switch.
Ports affected are all (only) up-links, core to core or core to edge.
* All switches have the latest firmware installed
* All configured with the same VLAN IDs (Default VLAN is 1 & Voice VLAN 30, configured trunk ports, separated tagged from untagged)
* Dynamic voice VLAN disabled on all switches
* Auto voice VLAN disabled on all switches
* CDP enabled on all switches
* Global settings for QoS trust mode is CoS/802.1p
[21 Cisco PoE and non-PoE switches SG-200, SG-250HP and SG-500 currently on the network].
VoIP system configured throughout our network that has been up and running for the past 6 months without any problems.
The warning messages are recent, and came up on our SG-500 core switches [Flash memory logs]
Warning is declared as "%CDP-W-VOICE_VLAN_MISMATCH
Ports affected are all (only) up-links, core to core or core to edge.
* All switches have the latest firmware installed
* All configured with the same VLAN IDs (Default VLAN is 1 & Voice VLAN 30, configured trunk ports, separated tagged from untagged)
* Dynamic voice VLAN disabled on all switches
* Auto voice VLAN disabled on all switches
* CDP enabled on all switches
* Global settings for QoS trust mode is CoS/802.1p
ASKER
ASKER
config-file-header
Rack71-1Switch192-0-0-132S tack
v1.4.8.6 / R800_NIK_1_4_202_008
CLI v1.0
set system mode router queues-mode 4
file SSD indicator plaintext
@
vlan database
vlan 2,30
exit
voice vlan id 30
voice vlan state disabled
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
port-channel load-balance src-dst-mac-ip
bonjour interface range vlan 1
qos trust cos
hostname Rack71-1Switch192-0-0-132S tack
passwords aging 0
snmp-server location "Offc 71\Flr 1\Sctn E\Rm NE-S (\"Server Rm 71\")"
clock timezone " " 0 minutes 0
clock summer-time web recurring usa
interface vlan 1
ip address 192.0.0.132 255.255.254.0
no ip address dhcp
interface vlan 2
name Sister_Company
interface vlan 30
name VoIP
interface gigabitethernet1/1/1
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/2
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/3
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/4
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/5
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/6
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/7
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/8
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/9
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/10
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/11
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/12
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/13
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/14
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/15
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
interface gigabitethernet1/1/16
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/17
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/18
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/19
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/20
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/21
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/22
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/23
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/24
description "Downlink to B71-Switch 192.0.0.126"
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/25
description "Uplink from Rack67-1Switch192-0-0-133S tack1"
channel-group 2 mode on
interface gigabitethernet1/1/26
description "Uplink to Rack85-1Switch192-0-0-131S tack1"
channel-group 1 mode on
interface gigabitethernet2/1/1
switchport trunk allowed vlan add 30
interface gigabitethernet2/1/2
switchport trunk allowed vlan add 30
interface gigabitethernet2/1/3
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/4
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
power inline never
interface gigabitethernet2/1/5
description "IP PBX Primary"
switchport mode access
switchport access vlan 30
power inline never
interface gigabitethernet2/1/6
description "IP PBX Secondary"
switchport mode access
switchport access vlan 30
power inline never
interface gigabitethernet2/1/7
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/8
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/9
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/10
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/11
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/12
description "Downlink to B71-2ndFloor Switch 192.0.0.127"
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/13
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/14
switchport trunk allowed vlan add 30
power inline priority high
interface gigabitethernet2/1/15
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/16
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/17
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/18
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/19
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/20
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/21
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
power inline never
interface gigabitethernet2/1/22
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/23
description "Downlink to B71 Switch 192.0.0.121"
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/24
description "Downlink to B71 Switch 192.0.0.125"
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 30
macro description switch
power inline never
next command is internal.
macro auto smartport dynamic_type switch
interface gigabitethernet2/1/25
description "Uplink from Rack67-1Switch192-0-0-133S tack2"
channel-group 2 mode on
interface gigabitethernet2/1/26
description "Uplink to Rack85-1Switch192-0-0-131S tack2"
channel-group 1 mode on
interface Port-channel1
description "Uplink to Rack85-1Switch192-0-0-131S tack"
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 2,30
macro description switch
next command is internal.
macro auto smartport dynamic_type switch
interface Port-channel2
description "Uplink from Rack67-1Switch192-0-0-133S tack"
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 2,30
macro description switch
next command is internal.
macro auto smartport dynamic_type switch
exit
Rack71-1Switch192-0-0-132S
v1.4.8.6 / R800_NIK_1_4_202_008
CLI v1.0
set system mode router queues-mode 4
file SSD indicator plaintext
@
vlan database
vlan 2,30
exit
voice vlan id 30
voice vlan state disabled
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
port-channel load-balance src-dst-mac-ip
bonjour interface range vlan 1
qos trust cos
hostname Rack71-1Switch192-0-0-132S
passwords aging 0
snmp-server location "Offc 71\Flr 1\Sctn E\Rm NE-S (\"Server Rm 71\")"
clock timezone " " 0 minutes 0
clock summer-time web recurring usa
interface vlan 1
ip address 192.0.0.132 255.255.254.0
no ip address dhcp
interface vlan 2
name Sister_Company
interface vlan 30
name VoIP
interface gigabitethernet1/1/1
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/2
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/3
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/4
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/5
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/6
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/7
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/8
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/9
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/10
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/11
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/12
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/13
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/14
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/15
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
interface gigabitethernet1/1/16
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/17
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/18
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/19
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/20
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/21
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/22
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/23
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/24
description "Downlink to B71-Switch 192.0.0.126"
switchport trunk allowed vlan add 30
interface gigabitethernet1/1/25
description "Uplink from Rack67-1Switch192-0-0-133S
channel-group 2 mode on
interface gigabitethernet1/1/26
description "Uplink to Rack85-1Switch192-0-0-131S
channel-group 1 mode on
interface gigabitethernet2/1/1
switchport trunk allowed vlan add 30
interface gigabitethernet2/1/2
switchport trunk allowed vlan add 30
interface gigabitethernet2/1/3
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/4
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
power inline never
interface gigabitethernet2/1/5
description "IP PBX Primary"
switchport mode access
switchport access vlan 30
power inline never
interface gigabitethernet2/1/6
description "IP PBX Secondary"
switchport mode access
switchport access vlan 30
power inline never
interface gigabitethernet2/1/7
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/8
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/9
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/10
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/11
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/12
description "Downlink to B71-2ndFloor Switch 192.0.0.127"
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/13
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/14
switchport trunk allowed vlan add 30
power inline priority high
interface gigabitethernet2/1/15
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/16
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/17
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/18
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/19
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/20
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/21
switchport trunk allowed vlan add 30
switchport trunk native vlan 2
power inline never
interface gigabitethernet2/1/22
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/23
description "Downlink to B71 Switch 192.0.0.121"
switchport trunk allowed vlan add 30
power inline never
interface gigabitethernet2/1/24
description "Downlink to B71 Switch 192.0.0.125"
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 30
macro description switch
power inline never
next command is internal.
macro auto smartport dynamic_type switch
interface gigabitethernet2/1/25
description "Uplink from Rack67-1Switch192-0-0-133S
channel-group 2 mode on
interface gigabitethernet2/1/26
description "Uplink to Rack85-1Switch192-0-0-131S
channel-group 1 mode on
interface Port-channel1
description "Uplink to Rack85-1Switch192-0-0-131S
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 2,30
macro description switch
next command is internal.
macro auto smartport dynamic_type switch
interface Port-channel2
description "Uplink from Rack67-1Switch192-0-0-133S
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 2,30
macro description switch
next command is internal.
macro auto smartport dynamic_type switch
exit
The comments from before, deal with all equipment including the router.
All devices routers, switches need to have 30 as the Voice vlan.
There is a mismatch.
All devices routers, switches need to have 30 as the Voice vlan.
There is a mismatch.
ASKER
The company firewall has a LAN sub zone setup X0:V30 with DHCP. It is part of voice VLAN 30.
There are no errors on the firewall/cisco port.
All core/edge Cisco switches have VLAN 30 as the voice vlan, still the uplink ports show errors.
"There is a mismatch"
Can you please be more specific? How do I find the mismatch?
Thanks,
There are no errors on the firewall/cisco port.
All core/edge Cisco switches have VLAN 30 as the voice vlan, still the uplink ports show errors.
"There is a mismatch"
Can you please be more specific? How do I find the mismatch?
Thanks,
usually the uplink should be a trunk that vlan1 and vlan30 pass through, it is not clear that this is what your setup is.
check the uplink port config on the device to which it is connected and how it is configured..
check the uplink port config on the device to which it is connected and how it is configured..
ASKER
All the uplink ports with errors are configured the same way:
Trunk
VLAN 1 - Untagged
VLAN 30 - Tagged
Trunk
VLAN 1 - Untagged
VLAN 30 - Tagged
You have to check how you have your setup defined.
Commonly the uplink is a trunk that passes all vlans it should not be tagged........
Check whether the uplink port is configured as a trunk on the switch... and matched on the router to which it is connected. then the chaining of the switch ports that feed the other switches .....
Commonly the uplink is a trunk that passes all vlans it should not be tagged........
Check whether the uplink port is configured as a trunk on the switch... and matched on the router to which it is connected. then the chaining of the switch ports that feed the other switches .....
ASKER
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ASKER
This is what resolved my issue, Cisco small business support assisted as well.
Is it set to vlan 30 there?
Or post your config so we can get a better idea.