Q012.Can netLD send SNMP Traps?

A012.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.

Q013. Why is it late to reflect status icon next to device ip addresses?

A013. For reflection speed, it depends on netLD version that you use.

[In the case of using version before ver 10.10]
For device status, click "run" button on the left of device view and update it.

[In the case of using ver.11.04]
Status of the job that has been run is reflected automatically.

Q015. The job that was scheduled has not been run. Why is that?

A015. Please make sure that the trigger for the job has been set up. Setting method: Click [+] icon in the bottom of "Schedule" tab, set trigger name and contents, and Click "OK" button. Click floppy icon in the schedule window, and add it to "Trigger" column.

Q064. Is it possible to push configuration with variable of multiple lines by using SmartChange?

A064. No, netLD doesn't support variable of multiple lines.
However, it is possible to correspond by making configurations algebraic value every one line.

1. Make template of following style.

conf t
write mem

2. Export template (xls).
please refer to the following:

3. Enter algebraic value to template.
Enter algebraic value to xls template.

4. Import
Import template.
please refer to the following:

*It is necessary to make template to each vendor.

Q065. Do leap years affect netLD?

A065. No, leap years do not affect netLD.
However, in the case of using Cron feature and Monthly in schedule feature,
when you specified 29th as the end of February of leap year, and if the year is not leap year,
it will be recognized as March 1st and schedule may not work correctly.

Q066. Is it possible to customize columns of "Devices" screen showing managed nodes?

A66. A new feature called "Custom Device Fields" was added with Ver.11.04.

In Custom Device Fields, it is possible to add maximum 5 columns that can be named specifically.
Also, it is possible to give viewing restriction to each column.

Q067. Can netLD work on LinuxOS?

A067. Linux CentOS/later than RedHat 5.x/6.x is supported.

Q068. Is it possible for multiple users to share netLD at once?

A068. Yes.
Also, it is possible to give permissions and viewing restriction to each user.

Q069. Does netLD have capacity limits for any kind of data?

A069. No, netLD doesn't have limits to the capacity except for the physical HDD limit.

Q070. In the case of netLD server crashing, how can I recover it?

A070. Once server is completely unavailable for some reason,
replace it with new server and contact support@logicvein.com with an explaination about what happened.
We will then reissue license.

Q071. How does the netLD license work?

A071. There are two types of licensing.

[Online authentication license]
When netLD is installed, enter the license key and authenticate it online.

[File authentication license]
We issue license file that is tied up with MAC address information of netLD server.
Apply the license file to netLD server and authenticate it off-line.

Q072. Can I develop a device adapter for netLD?

A072. It requires both professional language skill and network knowledge.
If you want to manage the devices that are not in our adapter list,
please contact support@logicvein.com for details.

Q073. How many nodes can netLD manage with one license?

A073. If the server that netLD is installed has enough resources,
it is possible to manage about 10,000 nodes with SmartBridge each handling 2,000 nodes(option) wit one license.

Also, by using SmartBridge that is implemented from ver.11.04,
it is possible to manage a maximum of 20,000 nodes with one core server.

Please refer to system requirements of netLD.

Q074. Is there a possibility that features of netLD might be unavailable due to updating OS of devices that have already been supported? If so, how can you support us?

A074. Yes, because of updating OS of devices, and if the commands that have been changed, the features of netLD will be unavailable. If you have a valid support contract, we will provide support at no charge.

Q075. Is it possible to backup the configuration of credentials of a Linux server?

A075. Yes, netLD supports Linux servers.

Q076. Does netLD work on VMware?

A076. Yes, netLD works on VMware.
We have an operational achievement on vSphere.

For more details, please contact support@logicvein.com.

Q077. Is it possible to specify "save location" that is different from folder that netLD is installed?

A077. Yes, you can do that.

For details of setting or so, please contact support@logicvein.com.

Q078. Is it possible to get support on-site?

A078. No, it is not possible. We do offer Webex support.

For more details, please contact support@logicvein.com.

Q079. What is the scope of support?

A079. Support covers the following:

・Q&A by email or phone regardless of presale or aftersales.
・Fixing bugs
・Free provision of new version installer
・Fixing adapters of OS that are supported
*Some adapters need to be updated in line with netLD version up.

Q080. Is it possible to use other products on the same server as netLD?

A080. Yes, it is theoretically possible as long as the other product doesn't use the port that netLD uses.
In addition, please ensure that a server has enough resources.

The list of the ports that netLD uses is shown in NetLD Manual.

Q081. Is it possible to add to the number of managed nodes after buying an initial license for 50 nodes?

A081. Yes, it is possible by buying an additional license.

For more details, please contact sales@logicvein.com.

Q082. How much bandwidth does netLD use for getting an OS image? Also, how long does it take to process?

A082. For bandwidth and processing time of OS image retrieval, please refer to the following:

netLD server: Windows 7
Core2 Duo CPU T7250 @ 2.00GHz 1.99GHz


Line Speed:

■IOS image retrieval
・Processing time -> 124 seconds (file size: 22,629KB)
・Bandwidth usage -> 2Mbps (average)

*Processing time may vary due to OS image size, response speed, server spec, and line speed.

Q083. Does netLD support redundancy? What is the best way to operate it?

A083. netLD v14.06 now supports redundant configuration. The older versions do not support redundancy configuration. To prevent issues in case of a system crash, we have successfully used the following techniques in the past: ・Reserve 2 netLD servers beforehand. When the active server is down, activate the standby server, which will continue operation instead. ・Backup netLD server at OS level periodically, and restore backup to reserved server when server is down. The former is easier to restore, but it is required to buy 2 product licenses beforehand. On the other hand, the latter needs only 1 license, but when the server is replaced, it is necessary to reissue netLD license, which might significantly delay the system backup. Also, netLD supports clustering in Japanese windows. The following combination of system has been confirmed already. Windows Server 2008 Hyper-V and CLUSTERPRO X. For operating environments, please contact support@logicvein.com.  

Q084. What is the recommended system requirement for netLD server?

A084. The more nodes you will manage, the more powerful the server should be.
Please check the link below:

If you let us know how many nodes will be managed, we will answer promptly.

Q085. Can netLD manage the devices from any vendor?

A085. We are releasing a list of devices that netLD supports.
Please check the link below:

For devices that are not supproted, it may be necessary to develop an adaptor. Generally speaking, it is possible to support devices that have CLI.
Fore more details, please contact support@logicvein.com.

Q086. What kind of devices can netLD manage?

A086. netLD mainly supports managed router, L2, L3 switch, firewall, and wireless AP.
Please check the link below:

Also, we are able to develop adapters on-demand when device is not supported.
*Note: There may be a device that cannot be supported.
For more details, please contact support@logicvein.com.

Q087. What are the requirement specifications of netLD?

A087. You can check system requirement of netLD from the link below:

Q088. Does netLD support IPv6?

A088. Yes, netLD supports IPv6 in all versions.

Q089. How much bandwidth does netLD use for configuration backup? How long does it take to process?

A089. For bandwidth and processing time of configuration back up, please refer to the following:

netLD server:
Windows 7
Core2 Duo CPU T7250 @ 2.00GHz 1.99GHz


Line Speed:

■Bandwidth and processing time of configuration back up
・Processing time -> 5 seconds
・Bandwidth usage -> 350Kbps (maximum)

*Processing time may vary due to configuration size, response speed, server spec, and line speed.

Q090. Where does netLD store MIB files?

A090. MIB files are stored in netLD server directly "/osgi-config/network".

Q091. Does netLD have an OS software distribution feature?

A091. Yes, netLD supports OS software distribution feature to Cisco IOS and NEC WA.

OS software dostribution is supported in Cisco IOS and NEC WA only.
It is possible to distribute OS software by using "Command Runner".

Q092. Is it possible to change the configurations of multi-vendor devices all at once?

A092. Yes, netLD implements a tool menu of commands that is commonly used.
In the case of using tool menu, it is possible to change configurations of multi-vendor devices all at once.

Q093. When backing up or changing configurations, is it possible to limit processing nodes?

A093. Yes, you can change processing nodes at once by using the following steps:

1. Open "dispatcher.properties" file in the "Net LineDancerosgi-cnfigdispatcher" folder.
2. Change the value of "maxThreadCount=10"(number of processing nodes at once).
*Note: we don't recommend changing the value to bigger value than fixed value.
Failures by violating our recommendation might be subject to no more support from us in this issue.
3. Reboot netLD

Q094. Is it possible to unify the task of logging into netLD with authentication server like Radius and LDAP?

A094.  netLD v14.06 supports this feature now. ID and Password was necessary for every Net LineDancer login in older versions, but with v14.06 Active Directory authentication is supported. Login authentication can be correlated by just specifying the authentication server.

Q095. Does netLD encrypt security information that is entered or inventory that is backed up?

A095. No, netLD doesn't encrypt data of managed nodes.
When data encryption is necessary, please use the EFS feature of Windows OS.

Q096. Is it possible to run multiple jobs on the same schedule?

A096. Yes, it is possible to run 10 registered jobs at the same time.
Also, in the case of more than 10 jobs, netLD runs 10 jobs in registered order.
If one of them has been completed, the 11th one will be added and processed.

Q097. In the case of entering wrong commands by CLI, is it possible to determine if my commands are correct via netLD?

A097. No, netLD does not understand either grammar or correctness of commands entered into CLI.

Q098. In the case of failed SmartChange, is it possible to check how much the job has been processed?

A098. Yes, you can check the list of nodes that has been running the jobs, the commands sent and the acknowledgements between server and devices.

Q099. When netLD manages nodes over WAN, how fast is WAN's line required at least?

A099. Line speed that is faster than 128K is required. However, in the case of managing with 128K, task of backing up configuration may be delayed.

Q100. When backing up a new configuration, is the previous configuration deleted?

A100. Configurations that have been backed up previously are saved as history and can be referred or compared with other configuration later.
You can set the duration to keep configuration history by "Settings" -> "Data Retention" on the right of screen.

Q101. What protocol dose netLD use to connect to a device (discovery, config backup, or change)?

A101. For discovery, ICMP and SNMP are used.
For backup and change, SNMP, SSH, TELNET, and TFTP or so are used.
Depending on devices, netLD choose necessary protocols below:


*SSH or TELNET is required.

Q102. Which database does netLD use?

A102. netLD uses Apache Derby as database. And also, netLD uses Posgres in redundant configuration (available on Linux platform only).

Q103. When I access netLD remotely, is safe from a security standpoint of view?

A103. Yes, when you access netLD remotely by browser, https is used between server and clients.

Q104. Can netLD export inventory?

A104. Yes, you can export inventory as CSV by "Inventory" -> "Export inventory as Excel file" on the right of "Devices" screen.

Q105. Is it possible to check the history of jobs that have been run? Also, how long can netLD save the history?

A105. Yes, you can check it by "Jobs" Tab -> "Job History".

You can check the following contents by "Job History":

・Name of job (both automatic and manual)
・Start time
・End time
・Result of running Tool and Report job (double-click job)
・Result of running via Terminal Proxy

Q106. What is the difference between the evaluation and the 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

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.

Q108. Can netLD set user access control and authentication?

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

Q109. Which OS does netLD support?


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

For more detail, please contact support@logicvein.com.

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.

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).

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.

Q122. What is Change Advisor?

A122. Change Advisor was added to Net LineDancer v13.08, which can generate commands automatically and push them on the devices.

Q123. What does the “@@ -101,6 +101,7 @@” on the report represent?

A123. 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."