Strange problem that just came up for one of our old site. Below is the switch configuration on fas0/9. Data VLAN is 997 and voice VLAN is 900 (CallManager)
switchport access vlan 997
switchport mode access
switchport voice vlan 900
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
storm-control broadcast level 20.00
On our router gateway here is the config for the DHCP
ip dhcp pool 997
network 192.168.5.0 255.255.255.0
dns-server x.x.x.x x.x.x.x
description SERVCORP VIRTUAL NETWORK
encapsulation dot1Q 997
ip address 192.168.5.1 255.255.255.0
ip accounting output-packets
ip nat inside
no ip mroute-cache
no snmp trap link-status
arp timeout 0
For some strange reason, when I manually allocate switchport access vlan 997 to a fas interface, the PC attached to this switch port gets assign the VLAN 900 IP address from CallManager (usually assign to IP Phones).
When I remove the switchport voice vlan 900 from the interface config, and allocate VLAN 997, it get the correct IP address allocated to the PC (192.168.5.x)
Put the switchport voice vlan 900 with the switchport access vlan 997 on the same switch interface, the problem occurs again.
Switch IOS version is "C3560 Software (C3560-IPBASE-M), Version 12.2(25)SEB4"
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