Cisco SRP521W-K9-G1 Administration Guide - Page 60

Setting up the Interfaces of the Services Ready Platforms Setting up the Wireless LAN 4 Advanced Wireless Settings Field Description CTS Protection Mode The SRP automatically uses CTS (Clear-To-Send) Protection Mode when your Wireless-N and Wireless-G products are experiencing severe problems and are not able to transmit to the SRP in an environment with heavy 802.11b traffic. This function boosts the SRP's ability to catch all Wireless-N and Wireless-G transmissions but can impact performance. The default is Auto. DTIM Interval This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the SRP has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1. Fragmentation Threshold This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346. Beacon Interval Enter a value between 40 and 3500 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the SRP to synchronize the wireless network. The default value is 100. Power Control Choose high, middle, or low to specify the range of the wireless network. The default is high, which is a normal power level. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 60