New Cisco 9800 L C

[smutnpj10]

Hello,  I'm installing a new 9800 LC wireless controller.  I have it configured but some of my clients are not getting an IP address from the Cisco switch.   It appears that the mobile devices are working fine and get an IP from the pool on the switch.  Here is my config on the WLC side and switch side:

WLC

interface TwoGigabitEthernet0/0/0
switchport trunk native vlan 30
switchport trunk allowed vlan 30
switchport mode trunk
negotiation auto
no snmp trap link-status

interface GigabitEthernet0
vrf forwarding Mgmt-intf
ip address 192.168.99.100 255.255.255.0
negotiation auto
no mop enabled
interface Vlan30
ip address 192.168.30.10 255.255.255.0
ip helper-address 192.168.30.1
no ip proxy-arp
!
interface Vlan99
ip address 192.168.99.3 255.255.255.0
no ip proxy-arp
no mop enabled

Switch:

interface GigabitEthernet0/6
description Connection to Management Cisco 9800 L - VLAN 10
switchport access vlan 30
switchport trunk allowed vlan 20
switchport mode trunk
spanning-tree portfast edge

interface Vlan30
description Wireless
ip address 192.168.30.2 255.255.255.0
ip helper-address 192.168.99.1
no ip route-cache

interface Vlan99
description MANAGEMENT
ip address 192.168.99.2 255.255.255.0
ip helper-address 192.168.99.1
no ip route-cache

[balaji.bandi]

It appears that the mobile devices are working fine and get an IP from the pool on the switch  - what IP address they are getting, we can not see your DHCP pool config, other than DHCP helper address.

what device not getting IP example : PC ? laptop ? apple device ?

both connect to same SSID ?

below config does not seems to be right, if you looking port to be trunk to allow more vlan, if only access that mean only vlan 30 allowed.

interface GigabitEthernet0/6
description Connection to Management Cisco 9800 L - VLAN 10
switchport access vlan 30   < remote this if you looking trunk ports.

switchport trunk native vlan 30

switchport trunk allowed vlan 20, 30
switchport mode trunk
spanning-tree portfast edge

[smutnpj10]

Thanks for replying.   The apple mobile devices and windows client are using the same SSID.  I've put below the configs.   The original post didn't paste correctly.

WLC

interface TwoGigabitEthernet0/0/0
switchport trunk native vlan 30
switchport trunk allowed vlan 30
switchport mode trunk
negotiation auto
no snmp trap link-status

interface GigabitEthernet0
vrf forwarding Mgmt-intf
ip address 192.168.99.100 255.255.255.0
negotiation auto
no mop enabled

interface Vlan30
ip address 192.168.30.10 255.255.255.0
ip helper-address 192.168.30.1
no ip proxy-arp
!
interface Vlan99
ip address 192.168.99.3 255.255.255.0
no ip proxy-arp
no mop enabled

Switch:

ip dhcp pool WIRELESS_VLAN_30
network 192.168.30.0 255.255.255.192
default-router 192.168.30.1 255.255.255.192
dns-server 8.8.8.8 8.8.4.4
option 43 hex f104.c0a8.1e0a

interface GigabitEthernet1/0/39
description 9800L Wireless Controller
switchport trunk native vlan 30
switchport mode trunk
spanning-tree portfast

interface GigabitEthernet1/0/40
description Management Port - Cisco Wireless 9800 - Gig0
switchport access vlan 20
switchport mode access

interface Vlan30
description WIRELESS
ip address 192.168.30.1 255.255.255.192
no ip route-cache

interface Vlan99
description Mgmt
ip address 192.168.99.1 255.255.255.192
no ip route-cache

[Sandeep Choudhary · Accepted solution]

Hi,

I dont think you need to configure native vlan on both side (WLC & switch). please remove it and give a try again!

WLC:

interface TwoGigabitEthernet0/0/0
switchport trunk native vlan 30
switchport trunk allowed vlan 30
switchport mode trunk
negotiation auto
no snmp trap link-status

Switch: 

interface GigabitEthernet1/0/39
description 9800L Wireless Controller
switchport trunk native vlan 30
switchport mode trunk
spanning-tree portfast

If still doesnt work then check the WLAN/Policy config.

Regards

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[marce1000]

 -  Review the 9800  L C  configuration with the CLI command : show  tech   wireless , have the output analyzed by  https://cway.cisco.com/tools/WirelessAnalyzer/  , please note do not use classical show tech-support (short version) , use the command denoted in green for Wireless Analyzer.   

 M.