WAN Interfaces

This section lists the WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. interfaces and provides a summary of WAN uplinks. The following details are displayed for the WAN interfaces:

• Total WAN Interfaces—The total number of available WAN interfaces.

• Name—The name of the WAN interface.

• Port— The port number along with the associated VLAN Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID.

• WAN Status— Displays the reachability status of the WAN. The following colors represent the status:

  Active WAN Uplink Status

  • Green— WAN port is up and the health check is reachable.

  • Red— WAN port is down or the health check is unreachable.

  Backup WAN Uplink Status

  • Orange— Backup uplink is up and the health check is reachable.

  • Red— Backup uplink is down or the health check is unreachable.

  • Gray— Backup uplink is up but the health check is disabled.

• VPN Status—VPNC reachability status.

  The VPN Virtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. Status option is not available for VPNC Gateways.

• Usage—WAN interface usage (Sent and Received).

• Throughput—WAN interface transmit and receive performance in Kbps.

• Loss—Loss percentage.

• Latency—The latency in milliseconds.

In the WAN Interfaces table, click a port number to display the Packets and Errors details.

The following video illustrates how to view WAN Interfaces Packets and Errors.

• The following graphs are displayed under the Packets tab:
  • Unicast—The number of unicast packets per second.
  • Multicast—The number of multicast packets per second.
  • Broadcast—The number of broadcast packets per second.
• The following graphs are displayed under the Errors tab:
  • CRC Errors—The number of cyclic redundancy errors logged.
  • Error Frames—The number of error frames logged.
  • Collisions—The number of collisions encountered.
• Additional Parameters—In the WAN Interfaces table, hover on the WAN interface name to view the additional parameter for the WAN interface.

  Figure 1  Additional Parameters

  

  The following additional parameters are displayed for the WAN interface:

  • Uptime—Uptime of the uplink (DD-HH-MM).
  • Default Gateway—Default gateway.
  • Speed/Duplex—Port speed.
  • Type—Service provider uplink type (Physical / Virtual).
  • Private IP—Private IP address.
  • WAN Backup—Backup of WAN interface (Enabled or Disabled).

Expand the WAN Interface name to see the following details:

• WAN Availability—Provides an overall graphical representation of the selected interface's WAN availability based on reachability. The graph shows the selected WAN port's ability to reach its default gateway and health check IP.

• VPN Availability—Provides an overall graphical representation of the selected interface's VPN availability based on reachability.

  The VPN Availability metrics is not available for VPNC Gateways.

• Usage—Provides a snapshot of the WAN usage and is available for All Traffic, Internet, and VPN specific information. You can see the incoming and outgoing traffic for the gateways with time plotted on the x-axis. Hover over the chart to see the incoming and outgoing traffic for a particular time frame.
  
  • Top Applications—Displays application level WAN usage per-uplink for top ten applications. Click the Go to Applications link to view details in the Applications tab.
    The WAN visibility is available only for 3 hours time range.

  Click the following icons to see the chart in logarithmic scale or linear scale.

  • Logarithmic Scale—Click this icon to view chart in logarithmic scale.
  • Linear Scale—Click this icon to view chart in linear scale.

  Click Received or Sent at the bottom of the chart to view or hide the usage chart for received or sent data.

• Throughput—Provides a graphical representation of the selected WAN interface's throughput. The graph displays the WAN interface's transmit and receive performance in bps.

  Click the following icons to see the chart in logarithmic scale or linear scale.

  • Logarithmic Scale—Click this icon to view chart in logarithmic scale.
  • Linear Scale—Click this icon to view chart in linear scale.

  Click Received or Sent at the bottom of the chart to view or hide the usage chart for received or sent data.

• Performance—The Performance section displays the MOS score of interface and the following graphs based on the probe that is selected. For a health check probe, only Latency Latency is an expression of time that a data packet takes to travel from one designated point to another. Network latency can be measured by determining the round-trip time (RTT) for a packet of data to travel to a destination and back again. and Packet Loss graphs are displayed.

  • Latency—The latency in milliseconds.

  • Packet Loss—Displays the packet loss in percentage.

  • Jitter—Displays the jitter in milliseconds.

  • MOS Score—Displays the MOS score.

    The MOS Score is not available for VPNC Gateways.

• WAN Compression—Provides bandwidth savings of WAN compression uplink, along with optimized and non optimized packets and the average bandwidth saved in percentage.

  The WAN Compression metrics is not available for VPNC Gateways.

The following video illustrates how to view the WAN Interfaces availability.

Live Monitoring for Device State is enabled for Status Header Tile, Port Status and WAN Interfaces.

Figure 2  WAN Live Monitoring

Actions

The Actions drop-down list contains the following options (the Clear IPSec SA Security Association. SA is the establishment of shared security attributes between two network entities to support secure communication., and Clear ISAKMP Internet Security Association and Key Management Protocol. ISAKMP is used for establishing Security Associations and cryptographic keys in an Internet environment. SA options are available for tunnels only):

• Reboot Gateway—Reboots the gateway. For more information, see Rebooting a Gateway.
• Open Remote Console—Opens the remote console for a CLI session through SSH Secure Shell. SSH is a network protocol that provides secure access to a remote device. . The default user ID is admin, but you can edit and customize the user ID. This custom user ID must be mapped to the device. For more information, see Opening a Remote Console
• Clear IPSec SA—Clears the IPSec Security Associations (SA). For more information, see Clearing IPSec SA.
• Clear ISAKMP SA—Clears the ISAKMP SA. For more information, see Clearing ISAKMP SA.

Go Live

The Go Live option allows you to view the WAN interface data in real-time. The details about individual WAN interfaces are updated every five minutes in the normal WAN page view, whereas the details displayed in Live mode are updated every five seconds. This feature allows you to compare the statistics of two WAN interfaces. By default, the first two are displayed. You can select the uplinks for which you want to view the data. This feature is especially useful to troubleshoot issues.

The Downstream graph displays data on download speed and the Upstream graph provides data on upload speed. The X-axis in the graph indicates the time and the Y-axis indicates the throughput in Bytes per second (bps).

The Live session is active for 15 minutes and automatically returns to normal view at the end of 15 minutes. A timer displays the number of minutes since the live session started.

To view the live statistics of the WAN interfaces, click the GO LIVE button. To go back to normal view, click the STOP LIVE button.

Figure 3  GO LIVE page