1. Troubleshooting Guide for Ethernet Switch FAE. Yen Ru.

2. Q: Why I get lots of packet lost when I enable function “Mirror” ? A: You have to enable Flow control”for each port because the sniffer port is going to full loading and that’s why you got packet lost in your network. Sniffer port is going to capture packets from mirror port. Default “Flow control” is disable. Q: I mean that they will copy command for example from Windows Notepad application and paste it to Hyper terminal. When doing like this HG-218M misses characters every now. A: This phenomenon reveal is because baud rate of console is too slow. For solve your situation, you can set “character delay” value up to 50 or higher. You can refer follow configure picture. Intelligent Ethernet Switches

4. Q: In which scenarios can this switch crash/hang while in normal operation? For example, how many PCs/switches are connected in series, how much traffic… or other ??? A: If looping or Broadcast storming happened it probably make switch crash / hang. Q: Does GS-7326’s HTTP port number changeable ? We have some difficulties with remote control when switches are behind the router that has NAT. So, does GS-7326 support this feature? A: Yes, GS-7326 supported this feature. You can easy find this feature to change HTTP port number via console \ 2.Management setup\ 5. Management features control \ 1. Web-Based capability \ 2. Select HPPT port number. Intelligent Ethernet Switches

5. Q : Could you explain in more detail what TX Drops are in the Statistics section. The manual says TX drops are due to lack of receive buffers. Please explain what this means. A : When receive buffer which indicated to the port full, then you will get account of TX drops of the port. There are many issues the receive buffer will get full. Such as broadcast, multicast and so on.... Q : At GS-7326, how can I enable function of “Security” ? A : Currently, GS-7326 doesn’t support “Security”, so you can not enable it. Q: Can cluster Ethernet switch support Java version above 1.3.1 ? A: Yes, cluster Ethernet switch support Java 1.4.2.06 and above version. Intelligent Ethernet Switches

6. Here are some concept about stacking for your reference : For management cluster intelligent switch. 1. Stack In & Out need string on each cluster switches. 2. Data and stacking are separated. 3. Network administrator can management cluster intelligent switches whenever via master or clients when both data and stack are connected. ( So, you can not management cluster switches if your PC connected on the client switch which lost data connection with master) 4. Network administrator can not management from one of cluster if data disconnect to master. Intelligent Ethernet Switches

7. Q: My Intranet performance slow down when I slot in a fiber module into my Intelligence Ethernet Switch. How can I analysis my Intranet ? A: 1. Check link LED status is steady link up. 2. Check configuration - "Speed-Duplex" is the same (1. Auto; 2. 1000Full) on both side switches of fiber connection. 3. Check configuration - "Flow Control" is the same (enable / disable) on both side switches of fiber connection. 4. Put this1000G fiber module into an other slot. 5. Change a new 1000G fiber module. 6. Change fiber line. 7. Change the Ethernet switch. Fiber Modules

8. Q: In the Manual for our Ethernet Switch is written under Key features " Supports real-time clock (optional)" How to use these feature and how get these optional feature?. A: RTC is optional feature. It is need put on a chip, RTC for real-time-click working. There is a socket on PCB of Ethernet Switch. It is about 48 pin. You can ask for RTC for shipping and then our manufacture will put the ship, RTC on. There is LED in the front panel which can shows RTC on or not. (refer user manual) Fiber Modules