WAP IP address config/routing issue

[jennifer]

This is my first time trying to configure a WAP for out network.  I have an AP1141 connecting to an SG300-28 switch.  The subnet for my WAPs is 10.10.40.0/24.  The rest of my internal network is 10.10.10.0/24.  There are four other WAPs on the 10.10.40.0/24 network that I did not configure.  When I assign an IP address - 10.10.40.7 to my WAP with the gateway as 10.10.40.100 (router), I cannot ping anything.  If I assign the WAP an IP address - 10.10.10.192 with the gateway 10.10.10.100 (router), I can ping everything.  Here is what I have in my WAP config:

interface BVI1

ip address 10.10.40.7 255.255.255.0

no ip route-cache

ip default-gateway 10.10.40.100

I am not sure what to look for at this point.  Hoping someone can point me in the right direction.  Thanks.

[Jeff Van Houten]

Is the port on the switch facing the wap in the correct vlan? Has the vlan been created?

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[jennifer]

I will double check the port, but I had originally configured as follows:

interface FastEthernet0/2

switchport trunk native vlan 40

switchport mode trunk

I swapped the WAP with another one and it works fine with a different switch so I'm assuming my issue is with the switch. 

[Jeff Van Houten]

I'm not familiar with the sg300 but on other Cisco switch products you can configure a port to be in a vlan that is not defined on the switch. If you're not running vtp that's a common mistake. Can you do a sh vlan brief and make sure vlan 40 exists on that switch?

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[Pawan Sharma]

Hi,

Cisco Sg300 is a layer 3 switch. So, please create 2 VLANs with 2 different subnets (10.10.40.0/24 & 10.10.10.0/24)

and just enable inter-VLAN routing among them. This should work.

Regards,

Pawan Sharma

http://www.ebrahma.com

[jennifer]

Hi Pawan, I am in the process of doing what you recommended.  I had to change the switch from layer 2 to layer 3, but have not had time to reconfigure the switch.  Thanks for your suggestion. 

[Pawan Sharma]

Hi,

Please let me know if you need any assistance in configuring the switch. I have a guy in my team who specializes on Cisco SMB product range.

Regards,

Pawan Sharma

http://www.ebrahma.com

[andrei.achim]

Hi,

you don't have to enable Layer 3 on the switch, you can use the router as a gateway for both the wired VLAN and the Wireless VLAN.

For example if VLAN10 is your wired VLAN and VLAN40 is your Wireless VLAN, make sure you:

- configure subinterfaces on the router and tag traffic for the appropriate VLAN

- make sure the link between your switch and the router is a trunk

- put the link to the WAP in VLAN40

- AP interface should be in access mode in this case

Regards,

Andrei