P2P drop on WLC

[Khawar Khan]

Hello everyone,

I would like to block P2P traffic on WLC by setting the option to "drop" under advanced settings of WLAN. I have few questions:

1) It will block direct traffic between any 2 clients connected to the same WLAN irrespective of what interface they are connected to, correct ? for instance user1 connected to interface 1 couldn't ping user2 connected to interface 2? The WLAN is mapped to interface group which has 64 interfaces in it.

2) Will P2P drop affect applications like zoom, apple tv, remote-desktop, wireless printing, filesharing ?

3) only unicast traffic will be blocked, or multicast and broadcast traffic as well ?

Thanks, 

[Sandeep Choudhary]

1) It will block direct traffic between any 2 clients connected to the same WLAN irrespective of what interface they are connected to, correct ? for instance user1 connected to interface 1 couldn't ping user2 connected to interface 2? The WLAN is mapped to interface group which has 64 interfaces in it.

Peer-to-peer blocking is applied to individual WLANs, and each client inherits the peer-to-peer blocking setting of the WLAN to which it is associated.

2) Will P2P drop affect applications like zoom, apple tv, remote-desktop, wireless printing, filesharing ?

I dont think it will affect the performance. I am using its for guest access and its working perfectly.

3) only uni-cast traffic will be blocked, or multicast and broadcast traffic as well ?

P2P blocking is for uni-cast traffic

Peer-to-peer blocking does not apply to multicast traffic.
By default WLC does not forward any broadcast. (WLC GUI "Controller -> General ->Broadcast Forwarding" set to disabled by default).

Regards

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[Khawar Khan]

Thanks Sandeep for your quick response.

1) So as long as 2 clients are connected to same WLAN, they can't talk directly, irrespective of belonging to different interfaces (subnets) via interface group.

2) what do you think about wireless printing? and apple tv and zoom etc. ?

3) Thanks for clarification

[Sandeep Choudhary]

As per my knowledge...

1. Yes , P2P is applied to WLAN (irrespective of interface / interface groups...) but I heard a issue earlier that it doesn't work properly with interface groups. Try it and if you get any issue then raise a TAC case.

Check this posts: https://supportforums.cisco.com/discussion/11925951/peer-peer-blocking-interface-groups-ap-groups

2. I did not test P2P feature with wireless printing ...(Just tested with guest access without any issue). May be its a good task for you to test and inform us here....

Regards

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