871W Router Wireless to Wireless Communication

[nrosselli]

I have an 871W router with a couple of clients connected. If 2 devices are both connected to the router the devices cannot ping each other. I can ping both devices from the router but not from the device. If I connect 1 of the devices to the ethernet switch of the router than I am able to ping the device from the other device. Any ideas why I cannot ping the device from the other device when both are wireless?

[paolo bevilacqua]

Please send router configuration.

[nrosselli]

Attached is the router config.

[paolo bevilacqua · Accepted solution]

Hi,

try configuring:

interface Dot11Radio0

bridge-group 1 subscriber-loop-control

bridge-group 1 block-unknown-source

no bridge-group 1 source-learning

no bridge-group 1 unicast-flooding

[nrosselli]

Thank you for the quick response. I will try this and let you know how it goes.

[nrosselli]

Your config changes got it working. Thanks for your help. Would you mind explaining why I needed these commands to enable this type of access?

[paolo bevilacqua]

As you see the radio interface works bridged to BVI interface. But being an AP, it is a special kind of bridge.

The commands (no source-learning) allows that a packet received on the radio interface is also sent to all the other connected wireless devices.

Thanks for the nice rating and good luck!

[tromer]

It might be your ACL, try this.

access-list 100 permit icmp any any echo

The echo requests may be getting blocked.

hth

ted

[paolo bevilacqua]

But it doesn't appear the ACL is blocking any traffic, and cisco's ACLs are supposed to behave in a predictable way.

[tromer]

Oops.. Yeah, you're right!