Cisco Cisco Access Registrar 4.2 Spezifikationen PDF herunterladen (Seite 463)

100

101

10-21

Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 10 Configuring Radio Resource ManagementWireless Device Access

Configuring Dynamic RRM

Step 3 Click Apply to commit your changes.

Step 4 Click Save Configuration to save your changes.

Step 5 If you want to specify the channels that the dynamic channel allocation (DCA) algorithm considers when

selecting the channels to be used for RRM scanning, follow these steps. This functionality is helpful

when you know that the clients do not support certain channels because they are legacy devices or they

have certain regulatory restrictions.

a. Click Wireless > 802.11a/n or 802.11b/g/n > RRM > DCA to open the 802.11a (or 802.11b/g) >

RRM > DCA page (see Figure 10-6).

Neighbor Packet

Frequency

How frequently the access point measures signal strength and how

frequently neighbor packets (messages) are sent, which eventually

builds the neighbor list.

Range: 60 to 3600 seconds

Default: 60 seconds

Note In controller software release 4.1.185.0 or later, if the access

point radio does not receive a neighbor packet from an existing

neighbor within 60 minutes, the controller deletes that neighbor

from the neighbor list. In controller software releases prior to

4.1.185.0, the controller waits only 20 minutes before deleting

an unresponsive neighbor radio from the neighbor list.

Channel Scan Duration The sum of the time between scans for each channel within a radio

band. The entire scanning process takes 50 ms per channel, per radio

and runs at the default Channel Scan Duration interval of 180 seconds.

The time spent listening on each channel is determined by the

non-configurable 50-ms scan time and the number of channels to be

scanned. For example, in the U.S. all 11 802.11b/g channels are

scanned for 50 ms each within the 180-second interval. So every 16

seconds, 50 ms is spent listening on each scanned channel (180/11 =

~16 seconds). The amount of time allocated for the entire scanning

process. The Channel Scan Duration parameter determines the interval

at which the scanning occurs.

Range: 60 to 3600 seconds

Default: 180 seconds

Table 10-1 RRM Parameters (continued)

Parameter Description

1 2 ... 458 459 460 461 462 463 464 465 466 467 468 ... 635 636

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco Cisco Access Registrar 4.2 Spezifikationen Seite 463

Kommentare zu diesen Handbüchern