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6-14
Cisco Wireless LAN Controller Configuration Guide
OL-13826-01
Chapter 6 Configuring WLANsWireless Device Access
Configuring WLANs
Figure 6-6 Peer-to-Peer Blocking Examples
Guidelines for Using Peer-to-Peer Blocking
Follow these guidelines when using peer-to-peer blocking:
In controller software releases prior to 4.2, the controller forwards Address Resolution Protocol
(ARP) requests upstream (just like all other traffic). In controller software release 4.2, ARP requests
are directed according to the behavior set for peer-to-peer blocking.
Peer-to-peer blocking does not apply to multicast traffic.
Locally switched hybrid-REAP WLANs and hybrid-REAP access points in standalone mode do not
support peer-to-peer blocking.
If you upgrade to controller software release 4.2 from a previous release that supports global
peer-to-peer blocking, each WLAN is configured with the peer-to-peer blocking action of
forwarding traffic to the upstream VLAN.
Using the GUI to Configure Peer-to-Peer Blocking
Follow these steps to configure a WLAN for peer-to-peer blocking using the GUI.
Step 1 Click WLANs to open the WLANs page.
Step 2 Click the name of the WLAN for which you want to configure peer-to-peer blocking.
Step 3 Click the Advanced tab to open the WLANs > Edit (Advanced) page (see Figure 6-7).
232321
WLAN 1 WLAN 1 WLAN 2 WLAN 2
WLAN 3 WLAN 3
Disable:
Peer-to-peer blocking
is disabled, and traffic
is bridged.
Drop:
Packets are discarded
by the controller.
Forward Up:
Packets are forwarded
to the upstream switch.
Layer 3
Router/Switch
Controller
Layer 2 Switch
Lightweight
Access Point
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