Capwap high bandwidth utilization

mscottini — Sun, 04 Jul 2021 03:08:39 GMT

Hello,

I would like to know if this traffic is correct... (wan link - remote APs)

minute:

15 minutes:

I think that something is wrong... there is a high bandwidth utilization.

All APs are configured with h-reap and local switching.

All traffic wan link - 15 minutes:

thanks.

Re: Capwap high bandwidth utilization

mscottini — Mon, 02 May 2011 14:03:53 GMT

Maybe this answer my question?

The LWAPP architecture provides for a heartbeat timer that is accomplished by a series of Echo Requests and Echo Responses. An AP periodically sends Echo Requests in order to determine the state of the connection between the AP and the WLC. In response, the WLC sends the Echo Response in order to acknowledge the receipt of the Echo Request. The AP, then, resets the heartbeat timer to the EchoInterval. The LWAPP protocol specification draft contains a detailed description of these timers. The system heartbeat, coupled with fallback mechanism, is 4 packets every 30 seconds and is comprised of these packets:

LWAPP ECHO_REQUEST from AP (78 bytes)
LWAPP Echo-Response to AP (64 bytes)
LWAPP PRIMARY_DISCOVERY_REQ from AP (93 bytes)
LWAPP Primary Discovery-Response to AP (97 bytes)

This exchange generates 33 bytes of traffic every 30 seconds.

RRM Measurements

There are two ongoing RRM exchanges. The first one, at every 60-second interval, is the load and signal measurement and consists of 4 packets. This exchange always adds up to 396 bytes:

LWAPP RRM_DATA_REQ from AP (107 bytes)
LWAPP Airewave-Director-Data Response to AP (64 bytes)
LWAPP RRM_DATA_REQ from AP (161 bytes)
LWAPP Airewave-Director-Data Response to AP (64 bytes)

The second sequence of packets is the noise measurement that includes a statistics information request and response sequence. It is done every 180 seconds. This short exchange of packets averages approximately 2,660 bytes and typically lasts 0.01 seconds. It consists of these packets:

LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP 
LWAPP RRM_DATA_REQ from AP 
LWAPP Airewave-Director-Data Response to AP 
LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP 
LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP

LWAPP STATISTICS_INFO from AP
LWAPP Statistics-Info Response to AP

LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP
LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP
LWAPP RRM_DATA_REQ from AP 00:14:1b:59:41:80
LWAPP Airewave-Director-Data Response to AP
LWAPP RRM_DATA_REQ from AP
LWAPP Airewave-Director-Data Response to AP

LWAPP STATISTICS_INFO from AP 
LWAPP Statistics-Info Response to AP

topic Capwap high bandwidth utilization in Wireless

Capwap high bandwidth utilization

Re: Capwap high bandwidth utilization

Ongoing Exchanges

Heartbeat

RRM Measurements