DokuWiki general:networking http://tibbo.com/kb/ 2010-09-06T14:26:53+04:00 DokuWiki http://tibbo.com/kb/ http://tibbo.com/kb/lib/images/favicon.ico text/html 2008-09-25T10:38:58+04:00 How to Configure Firewall Software to Allow DS Manger and DS Explorer to Work http://tibbo.com/kb/general/networking/dealwith_firewall?rev=1222324738&do=diff Question: I am using a firewall software on the computer that I am running your DS Manager / DS Explorer, there are some device servers that do not show up when the firewall software is running, how do I fix that? Answer: Firewall software usually have various levels of configuration on a program-to-program basis. The DS Manager and DS Explorer require the configuration of different service's setting under the firewall software. The DS Manager relies on the rundll32.exe to communicate with t… text/html 2008-09-09T14:01:31+04:00 When you Can and Cannot set Destination Address http://tibbo.com/kb/general/networking/dest_addr?rev=1220954491&do=diff Question: I want to set the Gateway IP-address and the Netmask of the Device Server but these Settings are disabled (grayed) in the DS Manager. I noticed that they are only enabled in the Master Routing Mode. Why can't I set the Gateway IP and Netmask in Slave (Server) mode? text/html 2008-09-09T14:03:14+04:00 Flow Control and Its Importance and Purpose http://tibbo.com/kb/general/networking/flow_control?rev=1220954594&do=diff Question: We are able to communicate with our Serial Device via the DS100 (EM100) but there are a lot of data errors. It seems that data bytes are randomly lost. What is the problem here? Answer: The most frequent cause of data loss is some problem with the handshaking (RTS/CTS) between your serial device and the Device Server. Using handshaking is recommended whenever possible. Just because your serial device could operate without handshaking when connected directly to the PC doesn't mean that… text/html 2008-09-09T14:03:23+04:00 Global Registration of Tibbo MAC Addresses http://tibbo.com/kb/general/networking/global_macs?rev=1220954603&do=diff Question: Is the MAC address available in your devices globally registered? What is the significance of this? Answer: MAC-addresses of Devices supplied by Tibbo are not globally registered. Let us first explain what all this registration business is all about. text/html 2008-09-09T14:04:10+04:00 My DS (or EM) Doesn't Work With My Hub! http://tibbo.com/kb/general/networking/hub_problems?rev=1220954650&do=diff Question: My DSes do not work when they are connected to 10BaseT hub. In this case their green link LED is on, but connection with EM202 is not possible (no ping, DS manager does not find them either by auto discovery of from address list). When I connect these DSes directly to 100BaseT switch (green link LED, and yellow 100BaseT LED are ON) then everything works fine. text/html 2008-09-09T14:09:22+04:00 What Happens When You Set IP Addresses Which Can't Exist http://tibbo.com/kb/general/networking/illegal_ip?rev=1220954962&do=diff Question: I have set up the IP-address of the EM100 (DS100) to x.x.x.0 and now the DS Manager cannot find it on the network. What do I do? Answer: This is an _illegal_ IP addressm because it ends with a 0. If you set the IP-address to x.x.x.0 the Device Server will actually run using this address: x.x.x.1. In other words, last “0” will be automatically replaced with “1”. This won't be done to the value of the IP Setting itself- this value can only be modified by you. Instead, the actual IP ass… text/html 2008-09-09T14:08:50+04:00 Invalid Ethernet (MAC) Address Prevents the Device from Working on Certain Networks http://tibbo.com/kb/general/networking/invalid_mac?rev=1220954930&do=diff Question: I can't see my device in DS Manager or Device Explorer. I can't even ping it. Why is that? Answer: We have had reports from some of our Customers that they couldn't operate our devices on certain networks -- the devices would not even respond to a ping.