Product Documentation

Network Adapters

Jun 06, 2013

IP Addresses Tab

This tab allows you to configure the IP address, netmask, gateway, HA virtual address, and VLAN of each interface, as well as enabling or disabling the interface.

Figure 1. IP Addresses Tab

For complete information on port usage. What follows below is a summary.

Accelerated Pairs

Most Appliances have four ports: two configured as a bridge called “Accelerated Pair A,” or apA, and two non-bridged motherboard ports, Primary and Aux1.

A typical installation uses only apA. Some Appliances may have a second accelerated pair. Acceleration is not supported on Primary or Aux1.

Accelerated pairs do not require an IP address for simple inline-mode operation, but an IP address is required if you use the CloudBridge Plug-in, WCCP, or SSL acceleration. If apA is left without an IP address, the Primary port should be enabled and have an IP address assigned to it so that the Appliance can be managed. Access from the serial and front-panel interfaces will still be active. Per-port access is controlled on the Configuration: Network Adapters page.

Address Formats

Except for the hostname, the network settings expect static IP addresses or masks in the usual decimal dotted-quad notation, such as “”. These should be assigned as if the Appliance were simply another computer on its subnet, not as if it were a router (since it isn’t a router).

Changes do not take effect until you click the Update button and restart the unit.

HA Virtual IP Addresses

If high-availability mode is used, one enabled interface needs to define an HA virtual IP address. This is used to manage the pair as if it were a single unit. Both Appliances in the pair use the same HA Virtual IP address.

Web Management Access

By default, the browser-based user interface can be accessed from any enabled interface. You can use this checkbox to disable management access on selected interfaces.

VLAN Settings

If your network uses VLANs, the Appliance should be set to a valid VLAN address.

Inline traffic will be accelerated regardless of the VLAN addresses (if any) of the packets, but traffic addressed to the Appliance itself must match the Appliance’s VLAN setting – that is, either no VLAN at all or a matching VLAN.

The correct VLAN setting is necessary for the proper operation of:
  • The browser-based user interface.
  • Virtual inline mode.
  • Proxy mode.

VLAN support is enabled by entering the VLAN number (a decimal number in the range of 0-4095), checking the Enable box, and pressing Update.

Changes do not take effect until the unit is restarted.

Note: When the VLAN is enabled, the management interface only responds to browser traffic from the specified VLAN. Thus, accidentally specifying the wrong VLAN will make the browser-based interface inaccessible. This can be reset from the LCD front-panel interface.

Ethernet Tab

Each Ethernet interface used by the Appliance is listed here, along with its speed (10, 100, or 1000 Mbps), its duplex setting (full or half), and its auto-negotiation state (auto or forced to a specific mode).

Figure 2. Ethernet Tab
Note: Auto-negotiation failures on Fast Ethernet (100 Mbps) networks are the most common cause of performance problems with Appliances. These are caused by a flaw in the Fast Ethernet Specification.

A pull-down menu allows you to reset the modes of the individual Ethernet ports. Changes do not take effect until you click the Update Adapter Configuration button.

Clicking on the individual adapter links (such as eth1) will open the Detailed Information page for the adapter.

Detailed Adapter Information

The Detailed Adapter Information page gives both summary statistics for the adapter and second-by-second transmit and receive statistics.

Clicking on the black arrows next to the graphs will move the view into the past (left arrows) or towards the present (right arrows) in one-minute increments.

The table offers More Info links for bridged adapters (that is, the two adapters used in inline mode) and individual flows. (A flow is the set of all accelerated connections between a given pair of Appliances.) The statistics for bridged adapters and individual flows are similar to those for individual adapters, with summary tables and second- by-second graphs.

Figure 3. Ethernet Adapter Detailed Information Page, Top Half

Figure 4. Ethernet Adapter Detailed Information Page, Bottom Half