Cisco Wireless LAN Controller Configuration Guide, Release 7.4
Configuring RRM Neighbor Discovery Packets
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Configuring RRM Neighbor Discovery Packets

Information About RRM NDP and RF Grouping

The Cisco Neighbor Discovery Packet (NDP) is the fundamental tool for RRM and other wireless applications that provides information about the neighbor radio information. You can configure the Cisco WLC to encrypt neighbor discovery packets.

This feature enables you to be compliant with the PCI specifications.

An RF group can only be formed between Cisco WLCs that have the same encryption mechanism. That is, an access point associated to a Cisco WLC that is encrypted can not be neighbors with an access point associated to a Cisco WLC that is not encrypted. The two Cisco WLCs and their access points will not recognize each other as neighbors and cannot form an RF group. It is possible to assign two Cisco WLCs in a static RF group configuration that has mismatched encryption settings. In this case, the two Cisco WLCs do not function as a single RF group because the access points belonging to the mismatched Cisco WLCs do not recognize one another as neighbors in the group.

Configuring RRM NDP (CLI)

To configure RRM NDP using the Cisco WLC CLI, enter this command:

config advanced 802.11{a|b} monitor ndp-mode {protected | transparent}

This command configures NDP mode. By default, the mode is set to “transparent”. The following options are available:

  • Protected—Packets are encrypted.
  • Transparent—Packets are sent as is.

Use this command to see the discovery type:

show advanced 802.11{a|b} monitor