GOOGLE TRANSLATED:


Tried system of ROS3.30 and 4.17, set in the ROS a APBRIDGE, and added to the bridge, IP address, DHCP configured.

Andrews phone connection on, ROS assign the IP address in the ARP table with a record, open a terminal can PING Andrews phone.
If the ARP record cleared, ROS there is no way the IP address of the phone through Andrews, PING, very strange. Suspected the Andrew system did not respond to ARP queries Broadcasting Andrews only first send packets, ROS will again know the phone ARP information.
The hands of three Android devices, Lenovo, ZTE handsets and a SmartDevice T15 PAD, all of this phenomenon.

I took out the WINDOWS MOBILE6 previous phone to connect to of ROS wireless network online, everything is normal, the response is very fast. The test of the computer's wireless card is also usual.

I in ROS3.30 and 4.17 versions under test, are the result. Here ROS terminal command, first remove the ARP information, and then immediately PING4 time interval of 0.3 seconds:

[Yuyu @ Windows7] / ip arp> / ip arp remove [find]; / ping 10.10.50.79 interv = 0.3 count = 4
10.10.50.79 ping timeout
10.10.50.79 ping timeout
10.10.50.79 ping timeout
10.10.50.79 ping timeout
4 packets transmitted, 0 packets received, 100% packet loss
Andrews, all barrier

[Yuyu @ Windows7] / ip arp> / ip arp remove [find]; / ping 10.10.50.56 interv = 0.3 count = 4
10.10.50.56 64 byte ping: ttl = 128 time = 14 ms
10.10.50.56 64 byte ping: ttl = 128 time = 5 ms
10.10.50.56 64 byte ping: ttl = 128 time = 5 ms
10.10.50.56 64 byte ping: ttl = 128 time = 6 ms
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min / avg / max = 5/7.5/14 ms
WINDOWS MOBILE6 system, everything is normal.

If both the wireless router connected to the other brands, everything is normal, computers, mobile phones, tablet never appeared in connection PING unreasonable phenomenon too.

A long time, can be caught in the air packets, with ROS Wireless and other wireless routers, packet no abnormal findings, can between ROS and Andrews, always ARP problem! !

Andrews system are 4.04 and 4.1 versions of the 2.3 version of the equipment.