Configuring IP Host Services

Use the IP Host Configuration window to establish in-band remote console sessions. Disable IP Host Services only if you want to limit access to the module to a local session through the setup port.

Configuring an IP Address

If you change the module's IP address, you may need to change the VSD associated with it. If the IP host address and the VSD's subnet do not match, and you restart the module, you can lose in-band connectivity to it.

Changing the IP address takes effect immediately after you click Apply.

Procedure:

Step Action
1 Select enable from the IP Host Services drop-down box.
2 Enter the IP address.
3 Enter the subnet mask address. Defaults values are:
  • For Class A IP Address: 255.0.0.0
  • For Class B IP Address: 255.255.0.0
  • For Class C IP Address: 255.255.255.0
4 Click Apply now or continue with configuring IP Host Services.

Enabling/Disabling Router Discovery and RIP Listening

You may want to enable Router Discovery and RIP Listening if routers are included in your network. You can enable both at the same time; typically only one or the other is needed.

  • Router Discovery is the ability of the module to learn about default routers by receiving ICMP Router Discover Messages.
  • RIP Listening is the process of building routing table entries that listen to the RIP protocol.

Procedure:

Step Action
1 Enable or disable Router Discovery or RIP Listening by selecting the option you want from the Router Discovery and RIP Listening drop-down boxes.
2 Click Apply now or continue with configuring IP Host Services.

Assigning an IP End Node to a VSD

For more information about VSDs, see Chapter 9 in the DIGITAL VNswitch 900 Series Management manual.

Assigning an IP end node to a VSD affects only in-band management (IP packets received over Ethernet, Fast Ethernet, FDDI, or ATM network interfaces). IP packets received through the OBM port of a DEChub 900 MultiSwitch or a DEChub ONE docking station are not affected. Packets received through an OBM port are not subject to VSD or bridge filtering.

Caution: You should assign the module's IP host address and associate the host address with a particular VSD one after the other. If you change the IP address or address-to-VSD association without also changing the other and then restart the module, you may lose inband connectivity to the module. This can occur because the IP host address and the VSD's subnet do not match. If you encounter this problem, you may be able to correct the mismatch only by using a local console (in-band management), or by resetting the module to factory defaults.

Procedure:

Step Action
1 Enter the name or the number of the VSD that you want to associate with the IP address.

Valid VSDs are displayed in the Valid VSDs table at the bottom of the window.

2 Click Apply.

Assigning a Default Gateway

A default network gateway may be required if routers are included in your network. The default network gateway is used when trying to send packets to IP destinations that are not on the same subnet as the module. All packets on this router whose destination address is not found in the routing table, are routed to this destination.

You do not need to configure a default gateway if you enable Router Discovery. It is also not typically needed if you enable RIP listening.

Procedure:

Step Action
1 Do any of the following:
  • To add a new gateway, click the Add button.
  • To change an existing gateway, click the Mod button.
  • To delete a gateway address, click the Del button associated with the address you want to delete. The system immediately deletes the selected gateway address.
2 Enter the correct address and click Apply.

Field Descriptions

IP Host Services Enables or disables IP Host services for the module.
IP Address IP address for the module. 
Subnet Mask Subnet mask that the module uses.
Router Discovery Enables or disables Router Discovery.
RIP Listening Enables or disables RIP Listening.
Associated VSD Name or number of the VSD associated with the assigned IP address.
Gateways for Host
Default Gateway IP address of the currently defined default network gateway.
Valid VSDs
VSD No. Number associated with a VSD.
VSD Name  

Name associated with a VSD. Assigning a name is optional.

VSD Name can include up to 32 ASCII-printable characters, except a question mark (?). The name cannot include spaces and must contain at least one alphabetic character. In addition, the name you assign must be unique. You cannot create another VSD on the same module using the same name.