Test Agent interface configuration

To see an overview of the interfaces of your Netrounds Test Agent, click Test Agents on the main menu, then click the Test Agent in the listing that appears.

The screenshot below shows an example of one active Test Agent interface ("eth0") having two VLANs configured.

Top right: 

Uptime: The time the Test Agent has been online since logging in.

If the Test Agent is offline, a string "OFFLINE since: <date and time>" is displayed instead to help you understand why this is so; you can correlate that date and time with known actions and events.

Version: Version of Test Agent software. If newer software is available, an up arrow is shown next to the version number:

You can then click the arrow in order to upgrade the Test Agent software to the latest version.

Memory: Memory currently in use on the Test Agent.

CPU: Current CPU load on the Test Agent.

Load avg: Average CPU load over the last 1 min, 5 min, and 15 min periods.

Login towards: Usually, this is the login server to which the Test Agents are connected. However, if a proxy is used, the proxy address is shown here instead.

 

Main section of dialog (Interfaces tab)

Clicking one of the interfaces, e.g. "eth0", displays the configuration options for that interface, including IP/MAC addresses, DHCP, VLAN, and bridges. A new tabbed dialog appears, whose contents are gone through in the following. 

Note: The Test Agent mobile interface, named "usb0" where present, has a partly different set of configuration options which is covered in the topic on mobile network measurements.

 

Status tab

The Status tab of the interface configuration dialog shows read-only information: link status, interface, IP/MAC address, RX/TX data rates, DNS server IP address, and the routes for the interface. You can reset packet counters by clicking the Reset packet counters button.

 

Interface tab

On this tab you can configure the link properties of the interface. 

Management: Check the box if this interface is to be used as Netrounds-internal management interface for connection to the cloud server. By default, "eth0" is the management interface. Note: Be careful when changing the management interface, as you might "lose" the Test Agent if you accidentally configure it incorrectly.

Description: User-defined name of the Test Agent.

MAC: Changeable MAC address. In the screenshot above, the MAC is changed to mimic a set-top box.

Speed: The link speed and duplex settings of the interface. The default is Auto.

MTU: The MTU size on the interface, i.e. jumbo frames. The default is 1500 bytes. Setting the MTU size is supported only on non-management interfaces; the supported range is 1280 ... 9000 bytes.

 

IPv4 address tab

On this tab you configure the connection type of the interface. The options are None, Dynamic (DHCP), and Static.

Checking the option Advanced: Use public address makes other Test Agents connect to the public address (seen by the Netrounds server) in tests and monitorings when this Test Agent is running as a server and is behind a NAT router.

IP address: The IP address is specified in the format "IP/prefix length". Example: "192.168.1.5/24".

IPv4 addresses can be specified using two different notations:

  • 192.168.0.5/255.255.255.0 (Netmask)
  • 192.168.0.5/24 (Prefix length)

For consistency among all IP addresses, Netrounds expects the prefix length notation for both IPv4 and IPv6. For example, prefix length /24 is the same as 255.255.255.0. Full information is given in the following conversion table:

Gateway: The IP address of the default gateway in your network.

DNS: DNS server address(es). Multiple servers can be specified using a comma-separated list; for instance, "192.168.1.1, 10.0.0.1".

At least one DNS server is required for the Test Agent management interface as the Test Agent resolves login.netrounds.com in order to set up the encrypted management connection to the cloud servers. For other interfaces, it is only required for certain tests such as HTTP, DNS and Ping if the target address is entered as a host name.

Use public address: Enabling this option allows a Test Agent to run as a server even if it is behind a NAT router. The Netrounds system will then use the public address of the router when connecting Test Agents. This works because the necessary port forwarding is done between the NAT router and the Test Agent.

When running a Test Agent as a client, this option is not needed even if the Test Agent is behind a NAT router.

This option is not applicable to Test Agents Lite.

DHCP Option 60: This option is used to optionally identify the vendor type and configuration of a DHCP client.

Vendors may choose to define specific vendor class identifiers to convey particular configuration or other identification information about a client. For example, the identifier may encode the client's hardware configuration.

See IETF RFC 2132 for details.

 

IPv4 DHCP server tab

On this tab you can activate a DHCP server on the interface. To use the function you must have the interface configured with a static IPv4 address.

Enable: Check this box to enable the DHCP server.

Range: The IP address interval from which the DHCP server will assign addresses to clients.

Prefix length: The length of the address prefix. See the IP address description above for more information about the prefix length format.

Gateway: The default gateway to send to clients.

DNS: The DNS server to send to clients.

 

IPv6 address tab

This tab is where you do the IPv6 address configuration.

IP address: The IPv6 address is specified in the format IP/prefix length. The format used by Netrounds for IPv6 addresses is: "FE80::0202:B3FF:FE1E:8329/64".

For IPv6 addresses only the prefix length notation is available, since typing 128-bit netmasks would be very tedious. You thus need to type the IPv6 address in full or collapsed form followed by the prefix length.

For consistency across IP addresses, Netrounds expects the prefix length notation for both IPv4 and IPv6.

Gateway: The IPv6 address of the default gateway in your network.

DHCP Option 60: This option is used to optionally identify the vendor type and configuration of a DHCP client.

Vendors may choose to define specific vendor class identifiers to convey particular configuration or other identification information about a client. For example, the identifier may encode the client's hardware configuration.

See RFC 2132 for details.

 

VLANs tab

On this tab you can create VLANs on an interface. Netrounds Test Agents support VLAN according to IEEE 802.1Q. The screenshot shows an example with two VLANs added on the physical interface "eth0".

If a bridge exists, you can add VLANs on top of that bridge.

 

Bridge tab

On this tab you can add a bridge to and remove a bridge from an interface. 

To a bridge one or more interfaces can be connected, as shown in the following screenshot:

 

 

Have more questions? Submit a request

Comments

Powered by Zendesk