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Association fails if WDS and infrastructure Access Points are in different subnets

 

 

Introduction

Association fails if WDS and infrastructure Access Points are in different subnets

 

 

Resolution

 

The WDS and the infrastructure APs communicate over a multicast protocol called WLAN Context Control Protocol (WLCCP). These multicast messages cannot be routed, so a WDS and the associated infrastructure APs must be in the same IP subnet and on the same LAN segment. Between the WDS and the WLSE, WLCCP uses TCP and User Datagram Protocol (UDP) on port 2887. When the WDS and WLSE are on different subnets, a protocol like Network Address Translation (NAT) cannot translate the packets.

 

An AP configured as the WDS device supports up to 60 participating APs. An Integrated Services Router (ISR) configured as the WDS devices supports up to 100 participating APs. And a WLSM-equipped switch supports up to 600 participating APs and up to 240 mobility groups. A single AP supports up to 16 mobility groups.

 

Note: Cisco recommends that the infrastructure APs run the same version of IOS as the WDS device. If you use an older version of IOS, the APs might fail to authenticate to the WDS device. In addition, Cisco recommends that you use the latest version of the IOS. You can find the latest version of IOS in the Wireless downloads page.

 

 

For information on WLCCP, refer to the Wireless LAN Context Control Protocol section of Cisco Catalyst 6500 Series Wireless LAN Services Module: White Paper.

 

Problem Type

Device cannot associate

 

Products

Access point

 

Wireless Stages

Unauthenticated and Unassociated

 

SW Features

Wireless Domain Services (WDS)

 

Reference

 

For information on how to configure WDS, refer to Wireless Domain Services (WDS) Configuration

.

 

Version history
Revision #:
2 of 2
Last update:
‎08-23-2017 09:55 PM
Updated by:
 
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