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IP Routing Features

Configuring IP Parameters for Routing Switches

Configuring IP Parameters for Routing Switches

The following sections describe how to configure IP parameters. Some param­ eters can be configured globally while others can be configured on individual VLAN interfaces. Some parameters can be configured globally and overridden for individual VLAN interfaces.

This section describes how to configure IP parameters for routing switches. For IP configuration information when routing is not enabled, see chapter 7, “Configuring IP Addressing”.

Configuring IP Addresses

You can configure an IP address on the routing switch’s VLAN interfaces. Configuring IP addresses is described in detail in chapter 7, “Configuring IP Addressing”.

Changing the Router ID

In most configurations, a routing switch has multiple IP addresses, usually configured on different VLAN interfaces. As a result, a routing switch’s identity to other devices varies depending on the interface to which the other device is attached. Some routing protocols, including Open Shortest Path First (OSPF), identify a routing switch by just one of the IP addresses configured on the routing switch, regardless of the interfaces that connect the routing switches. This IP address is the router ID.

Routing Information Protocol (RIP) does not use the router ID.

By default, the router ID on an HP routing switch is the lowest numbered IP interface configured on the device.

If you prefer, you can explicitly set the router ID to any valid IP address. The IP address cannot be in use on another device in the network.

To display the router ID, enter the show ip ospf CLI command at any Manager EXEC CLI level.

To change the router ID, enter a command such as the following:

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