Over the years, we have identified some frequently asked questions from our customers. If you have a question about our products, there is a good chance that the answer to your question is here in our FAQ section.
Click on the bar below to choose between questions regarding our industrial Ethernet products or questions regarding our general products.
Q.1 We need to know if we can put a VLAN on every port.
Ans:
Yes, the ports will support VLANs.
Q.2 I have hundreds of VLANs to setup on NSH-561. May I have an easier way for configuring them?
Ans:
Yes, you can prepare a plain text file containing plenty of commands for configuring the Switch. Have those commands typed in a file one each line as entered on Command Line Interface. And then store the command file in the work directory of a TFTP server; use this command on CLI to submit the batch of commands to configure the Switch:
upgrade cfgtext [IP of TFTP server] [command filename]
Q.3 Does the switch support priority queues and if so, how many?
Ans:
Yes, two, four or eight hardware queues depending on models for Quality of Service (QoS).
Q.4 Does the switch support spanning tree protocol?
Ans:
Yes. All VOLKTEK switches support the Spanning Tree Protocol (STP) and/or Rapid Spanning Tree Protocol (RSTP) / Multiple Spanning Tree Protocol (MSTP). Check the catalog for details.
Q.5 What is the maximum frame length for the switches?
Ans:
From 1518 Bytes to 9216 Bytes depending on models. Check the catalog for details.
Q.6 802.1x Security: We applied the 802.1x security feature with Linux RADIUS and tried to connect the client system through NSH-550+, but the switch gives us authentication-failure message. We were using TLS Challenge with EAP.
Ans:
The most important thing in 802.1x security settings is that both the PC and the Authentication Server (RADIUS) must use the same protocol. NSH-550+ only provides “MD5-Challenge” for EAP type as the authentication method, it will not recognize the “TLS Challenge” with EAP.
Q.7 IP Configuration: Is there a particular method for defining the customer's own IP address (so that it doesn't clash with existing ones), and what about the subnet mask and gateway address?
Ans:
There are A, B & C classes of subnets. For example, 192.168.0.xxx is a C-class subnet. For C-class subnets, we use 255.255.255.0 as subnet mask. The mask will filter out the IP addresses that are not in the subnet. If your computer is going to access another computer outside the subnet, the gateway address will help you. This means the router (sometimes it might be a communication server or another computer) with the gateway address will deliver your request to the destination computer for you. Therefore, the user only has to check within his/her own subnet for IP address clashes. Normally, there is an IP address range that users can define. Make sure that the chosen IP is not outside of this range.
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