Category Archives: Specification


Q113. What are the browser requirements for netLD?

A113. We always recommend being on the latest versions of both the browser and flash.
But these are our minimum client requirements:

Adobe Flash Player:
  • Flash version 13 and up.
  • Internet Explorer: version 8 and up.
  • Chrome: version 38 and up.
  • Firefox: version 31 and up.
Java is not required.

We don't have specific support requirements for the client operating systems, but in general we don't support operating systems that are themselves no longer supported (eg: since Microsoft no longer supports Windows XP, we also don't support XP).

Q112. netLD can do bulk configuration of devices, including distribution of IOS updates. Is there a limit on the number of devices that could be upgraded in a single batch?

A112. Regarding bulk configuration changes and IOS distribution, there is no limit to the number of devices in a single batch.

Q116. Could I have an overview on how the backup process with netLD works from start to end?

A116. Here is a basic overview of the backup procedure...
  1. Initiate CLI connection to device
  2. Run commands
  3. Possibly send configurations over FTP or TFTP back to netLD
  4. Close connection to device
  5. Save hardware and software information to database
  6. Compare configurations and save to database if there is a change
And here are a little more details for each of the steps...
  1. netLD initiates a backup using the configured protocols and credentials. If the connection with the protocols or credentials fails, it will retry with the next configured combination of credentials and protocols until it can successfully log in to the device. netLD will remember the last successful combination of credentials and protocols for the next time a backup operation is performed against the device.
  2. netLD executes a set of commands against the device in order to collect various hardware and software information from the device. It will also run commands to collect the configuration itself.
  3. Depending on device support this might all be over the CLI (SSH or Telnet) but in some cases netLD will issue a TFTP or FTP command to send the configuration back to the netLD server.
  4. The connection to the device is closed.
  5. The parsed hardware and software information from the device is updated in the netLD database.
  6. netLD will perform a configuration comparison of the collected configurations against the previous backup's configurations. If there is a change the configuration files are saved into the netLD database. (The configurations are saved using a "reverse delta" model, so only the changes themselves are saved rather than the entire configuration.)
If you are running a smart bridge there is an additional step after the communication with the device where the SmartBridge will check it's saved CRC hash of the configuration to see if there is a change or not. If the CRC hash of the configurations are unchanged then it will tell the main server that there are no changed. This allows the system to save on bandwidth communicating between the smart bridge and main server in the common case of there being no changes.

123. What does the “@@ -101,6 +101,7 @@” on the report represent?

It is the result of the diff output in the unified format: @@ -"the number of the lines of old file"+"the number of the lines of new file" @@ "@@ -101,6 +101,7 @@" means "the difference between the line 101 through 107 of old file and the line 101 through 108 of new file."

122. What is Change Advisor?

Change Advisor was added to Net LineDancer v13.08, which can generate commands automatically and push them on the devices.

Q12.Can netLD send SNMP Traps?

A12.Yes, netLD sends SNMP Traps to destination IP address in case of following occasions:

・Configuration is changed at device *1
・New device is added in the network.
・Device is deleted.
・Backing up configuration of device is failed.
・Compliance is violated.

*1: At the time of backup, if there is any difference between latest configuration and the last
configuration, SNMP Trap will be sent.

Q109. Which OS does netLD support?


* Windows Serever 2008 (SP3)
* Windows Serever 2008 R2
* Windows Serever 2012
*Linux RedHat 5.x/6.x

For more detail, please contact

Q108. Can netLD set user access control and authentication?

A108. Yes, netLD can combine mix and matched permissions and set them to user account.

Q107. Is it possible to check the license expiration date?

A107. Yes, you can check the license expiration date by referring to "Help" -> "About" on the right of screen. Also, netLD warns you by popup banner (1min) within 90 days from expiration.

Q106. What is the difference between evaluation and release version?

A106. There are no difference about except for its validity.

However, evaluation version has following limits:

available nodes: 100 nodes
expiration date of license: 30 days

[In the case of online authentication]
30 days since the date installed

[In the case of off-line authentication]
30 days since the date of license file that was created