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Chapter 5 Advanced Configuration
• Airtime Fairness
- This function can improve the overall network performance by
sacrificing a little bit of network time on your slow devices.
• Beacon Interval
- Enter a value between 40-1000 milliseconds for Beacon Interval
here. Beacon Interval value determines the time interval of the beacons. The
beacons are the packets sent by the router to synchronize a wireless network. The
default value is 100.
• RTS Threshold
- Here you can specify the RTS (Request to Send) Threshold. If the
packet is larger than the specified RTS Threshold size, the router will send RTS
frames to a particular receiving station and negotiate the sending of a data frame.
The default value is 2346.
• DTIM Interval
- This value determines 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 router has
buffered broadcast or multicast messages for associated clients, it sends the next
DTIM with a DTIM Interval value. You can specify the value between 1-255 Beacon
Intervals. The default value is 1, which indicates the DTIM Interval is the same as
Beacon Interval.
• Group Key Update Period
- Enter a number of seconds (minimum 30) to control
the time interval for the encryption key automatic renewal. The default value is 0,
meaning no key renewal.
5.3 NAT Forwarding
The router’s NAT (Network Address Translation) feature makes the devices on the
LAN use the same public IP address to communicate on the internet, which protects
the local network by hiding IP addresses of the devices. However, it also brings
about the problem that external hosts cannot initiatively communicate with the
specified devices in the local network.
With the forwarding feature, the router can traverse the isolation of NAT so that
clients on the internet can reach devices on the LAN and realize some specific
functions.
The Mercusys router includes four forwarding rules. If two or more rules are set, the
priority of implementation from high to low is Port Forwarding, Port Triggering, UPNP
and DMZ.
5. 3. 1. Port Forwarding
When you build up a server in the local network and want to share it on the internet,
