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ManualsBrandsHP ManualsNetwork HardwareHP 5412R zl2 Switch

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Example 115 Displaying the router ID when OSPFv3 is enabled

If a routing switch is using a router ID such as 10.10.10.1:

HP Switch(config)# show ipv6 ospf3

OSPFv3 General Status

OSPFv3 Protocol : Enabled

Router ID : 10.10.10.1

NOTE: If one of the following is true, the router ID is set to 0.0.0.0:

• No manual router ID, IPv4 network address, or IPv4 loopback interface address is configured

on the routing switch.

• No dynamic routing protocol is enabled on the routing switch.

Manually configuring a router ID

For more information about configuring a router ID, see “Configuring a router ID” (page 172).

You can override the current router ID assignment by explicitly configuring the router ID to any

valid IPv4 address. (This address must be unique; not configured on another device in the network.)

Syntax:

[no] ip router-id n.n.n.n

This optional command configures a router ID for use by any dynamic routing

protocol configured on the routing switch. The assignment applies across all routable

VLANs on the routing switch, and uses the IPv4 32-bit dotted decimal format. The

resulting IPv4 address must be unique in the network.

The no ip router-id command replaces a manually configured router ID with

the first-detected IPv4 network address configured on a VLAN. If an IPv4 address

is not detected on a VLAN, then the lowest-numbered IPv4 address of the

lowest-numbered IPv4 loopback interface is used.

Changing an existing router ID

1. Go to the global config context.

The CLI prompt will appear similar to the following:

HP Switch(config)#_

2. Use ip router-id n.n.n.n to specify a new router ID.

This must be in the IPv4 (32-bit) dotted-decimal address format and must be unique in the

routing switch configuration and your network. For example:

• If both OSPFv2 and OSPFv3 are enabled, you will see the following:

OSPFv3 and OSPFv2 are running. Router-id will be applied immediately.

Protocol will be reset. Continue [y/n]?

Press Y to continue, or press N to exit from the command without changing the ID.

• If a routing protocol is not enabled, the new ID is entered and the global config prompt

is displayed.

Viewing a manually configured router ID

Use one of the following commands:

168 IPv6 Routing Basics