IP Networking
From Antcor
Contents |
IP Networking
This section describes IP Networking settings and configuration procedures for your IKARUS node.
To configure IP Networking, select the Interface Configuration tab, located under the Advanced Configuration of Node, Configuration, Network tabs.
- The Interface Configuration tab features four panes:
- Network Interfaces Tree (left pane)
- Basic IP Configuration (top pane)
- Global Settings (center pane)
- Special Action Interface Commands (bottom pane)
- Two buttons are located at the top of the IP Configuration tab:
- Refresh – Click Refresh to retrieve setting from the selected node.
- Submit – Click Submit to upload the configuration to the node.
Using the Network Interfaces Tree
The left pane of the IP Configuration tab contains the Network Interfaces Tree, a representation of all available network interfaces of the selected node. The tree view can be expanded or collapsed by left clicking on any master interface. When an interface is selected, data fields in the other panes display the parameters associated with the selected interface and changes can be made.
Configuring Basic IP Settings
The top pane of the IP Configuration tab contains all Basic IP Configuration fields for the interface selected in the Network Interfaces Tree.The following section describes the fields used to configure IP settings.
IP Address
The IP Address field contains the IP address of the selected interface. To change the IP address of the interface, type the new address into this field and click the Submit button.
Subnet
The Subnet field contains the subnet mask address of the selected interface. To change the subnet address, type the new address into this field and click the Submit button.
Enable/Disable Selected Interface
The Enable/Disable Selected Interface box indicates whether the interface is enabled. If this box is not checked the interface will maintain the desired configuration but it will remain disabled. If the selected interface is a virtual interface, this box has no effect. Virtual interfaces can only be in the enabled state.
MAC Address
The MAC Address field displays the interface’s Media Access Control (MAC) address in hex format. This field is readable for any kind of interface and writeable only for physical interfaces. To change the MAC address of a physical interface the MAC Spoofing check box must be selected.
MAC Spoofing
When the MAC Spoofing check box is selected an alternate MAC address (for physical interfaces only) can be typed into the MAC Address field.
Configuring Global Settings
The center pane of the IP Configuration tab contains Global Settings. These fields apply to all network interfaces.Default Gateway Every IP packet with an unknown destination will be forwarded through the default gateway IP address. Set this address statically by typing it into the Default GW field. It also can be set dynamically from another application such as a DHCP client, a PPPoE client, or a PPTP client.
IP Forwarding
IP Forwarding all traffic to flow between interfaces even if they are set on different subnets. Select the IP Forwarding check box to allow the system to forward packets from one subnet to another.
DNS1 and DNS2
You can set DNS1 and DNS2 addresses statically by typing them in or they can be set dynamically from another application such as a DHCP client, a PPPoE client, or a PPTP client.
Using Special Interface Commands
The bottom pane of the IP Configuration tab contains Special Action Interface Commands used to create and manage network bridges and virtual interface commands.
Network Bridge Commands
A bridge is a LAN interconnection device that operates at the data link layer (layer 2) of the OSI reference model. It may be used to join two LAN segments (A, B), constructing a larger LAN. A bridge is able to filter traffic passing between the two LANs and may enforce a security policy separating different work groups located on each of the LANs. Bridges were first specified in IEEE 802.1D (1990) and later by ISO (in 1993).
Add New Bridge
- To create a new network bridge interface
- Click the Add new bridge button. The Insert New Bridge dialog box appears.
- Type the bridge name in the box, then click the Submit button. The bridge name appears in the Network Interfaces Tree.
Note: The bridge name must begin with the string “br”. There is no limitation to the rest of the name.
Delete Bridge
- To delete a bridge
- Select the bridge in the Network Interfaces Tree
- Click the Delete Bridge button in the Network Bridge Commands pane
Insert Interface
- To insert an interface as a ‘slave’ under a bridge
- In the Network Interfaces Tree, select an interface to become the slave.
- Click the Insert Interface button. The Insert Iface to Bridge dialog bx appears.
- In the Select Bridge list box, select the desired bridge.
- Click Submit. The tree is rearranged to show the interface as a slave to the bridge.
Virtual Interface Commands
From the Special Interface Commands pane you also can create virtual network interfaces—ones that are not associated with hardware. Virtual interfaces allow you to associate more than one IP address with a system. A typical use of this technique would be to support multiple Web sites. For example, if http://www.examplesite.com were assigned the address 222.33.44.55, virtual interfaces 222.33.44.56 and 222.33.44.57 might be assigned to www.examplesite.net and www.examplesite.org. All three sites could exist on the same system without conflict.
Virtual interfaces also allow a system to communicate on more than one network address space. For example, virtual interfaces allow you to temporarily renumber a network from a masqueraded network address space to a private (10.0.0.0) subnet. During the transition, all servers can be assigned a virtual address enabling them to communicate with clients on both the old and new network address spaces. Externally, virtual interfaces appear as if they are actual interfaces.
Add New Interface
- To insert a new virtual interface in association with a physical interface
- Select the physical interface in the Network Interfaces Tree.
- Click the Add new Iface button. The virtual interface appears in the tree and is automatically named with a prefix that matches the physical interface name and a suffix which is includes the virtual interface index inside brackets.
Delete Interface
- To permanently remove a virtual interface
- Select the virtual interface in the Network Interfaces Tree
- Click the Delete Iface button
