Unable to connect to Access Point over VLAN

JOE HARRINGTON · ‎05-15-2014

I have a Cisco Aironet 1142 that I am unable to ping or connect to in order to manage and unable to connect to the SSIDs . I have changed the native VLAN to 318 on the 1142. I have also set the port on my 3750X to trunk with the native VLAN set at 318. The 1142 can ping its IP address but not the Default Gateway. The switch is able to ping the Default Gateway but not the 1142. Any suggestions based upon the configs included below? Many thanks!

Aironet 1142:

interface Dot11Radio0.318
encapsulation dot1Q 318 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface Dot11Radio1.318
encapsulation dot1Q 318 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface GigabitEthernet0.318
encapsulation dot1Q 318 native
no ip route-cache
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
!
interface BVI1
ip address 172.17.18.200 255.255.255.0
no ip route-cache
!
ip default-gateway 172.17.18.1

3750X:

interface GigabitEthernet1/0/30
switchport trunk encapsulation dot1q
switchport trunk native vlan 318
switchport trunk allowed vlan 3,318,956
switchport mode trunk
switchport nonegotiate
switchport voice vlan 220
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AUTOQOS-SRND4-CISCOPHONE-POLICY

Jan Rolny · ‎05-15-2014

Hi,

just for clarification you are pinging 172.17.18.1 right?

Is interface wiht this IP address UP ?

Can you please post sh interface status and sh ip interface brief ?

Regards,

Jan

JOE HARRINGTON · ‎05-15-2014

Yes, unable to ping 172.17.18.1. BVI interface is up

#sh int bvi1
BVI1 is up, line protocol is up
Hardware is BVI, address is e8b7.48f5.0f7e (bia e8ba.70e7.d430)
Internet address is 172.17.18.200/24
MTU 1500 bytes, BW 54000 Kbit/sec, DLY 5000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 03:18:25, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
     133 packets input, 9926 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     1610 packets output, 189086 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out

Jan Rolny · ‎05-16-2014

Hi,

output you provided is from AP. Could you please post output of command from switch? There will be probably problem in configuration or something else.

Also please check cable connection it sometime also make some issues.

Thanks,

Jan

JOE HARRINGTON · ‎05-17-2014

We found the issue. It was a VLAN tagging problem on the switch. Thanks for the help.