IRDP commands 1

ip irdp· 1

ip irdp address 1

ip irdp lifetime· 2

ip irdp interval 3

ip irdp multicast 4

ip irdp preference· 4

 

The term "interface" in this chapter collectively refers to Layer 3 interfaces, including VLAN interfaces and Layer 3 Ethernet interfaces. You can set an Ethernet port as a Layer 3 interface by using the port link-mode route command (see Layer 2—LAN Switching Configuration Guide).

ip irdp

Use ip irdp to enable IRDP on an interface.

Use undo ip irdp to disable IRDP on an interface.

Syntax

ip irdp

undo ip irdp

Default

IRDP is disabled on an interface.

Views

Interface view

Predefined user roles

network-admin

Usage guidelines

After IRDP is enabled on an interface, the IRDP configuration takes effect, and the device sends RA messages out of the interface.

Examples

# Enable IRDP on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp

ip irdp address

Use ip irdp address to specify an IP address to be proxy-advertised by an interface.

Use undo ip irdp address to remove the proxy-advertised IP address.

Syntax

ip irdp address ip-address preference-value

undo ip irdp address [ ip-address ]

Default

No proxy-advertised IP address is specified.

Views

Interface view

Predefined user roles

network-admin

Parameters

ip-address: Specifies an IP address in dotted decimal notation.

preference-value: Specifies the preference for the proxy-advertised IP address, in the range of –2147483648 to 2147483647.

Usage guidelines

You can specify a maximum of four proxy-advertised IP addresses on an interface. An RA sent on an interface includes the IP addresses of the interface and the proxy-advertised IP addresses.

If you do not specify any IP address for the undo command, the command removes the proxy-advertised IP addresses from all interfaces.

Examples

# Specify the IP address 192.168.0.8 and its preference 1600 for VLAN-interface 100 to proxy-advertise.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp address 192.168.0.8 1600

Related commands

ip irdp

ip irdp lifetime

Use ip irdp lifetime to set the lifetime of IP addresses advertised on an interface.

Use undo ip irdp lifetime to restore the default.

Syntax

ip irdp lifetime lifetime-value

undo ip irdp lifetime

Default

The lifetime is 1800 seconds.

Views

Interface view

Predefined user roles

network-admin

Parameters

lifetime-value: Specifies the lifetime in seconds, in the range of 4 to 9000.

Usage guidelines

The lifetime of IP addresses cannot be shorter than the maximum advertising interval on an interface.

The specified lifetime applies to all advertised IP addresses, including the IP addresses of the interface and proxy-advertised IP addresses on the interface.

Examples

# Set the lifetime of IP addresses advertised on VLAN-interface 100 to 2000 seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp lifetime 2000

Related commands

·     ip irdp

·     ip irdp interval

ip irdp interval

Use ip irdp interval to set the maximum and minimum intervals for advertising RAs on an interface.

Use undo ip irdp interval to restore the default.

Syntax

ip irdp interval max-interval-value [ min-interval-value ]

undo ip irdp interval

Default

The maximum advertising interval is 600 seconds, and the minimum advertising interval is 3/4 of the maximum advertising interval.

Views

Interface view

Predefined user roles

network-admin

Parameters

max-interval-value: Specifies the maximum advertising interval in seconds, in the range of 4 to 1800.

min-interval-value: Specifies the minimum advertising interval in seconds, in the range of 3 to max-interval-value.

Usage guidelines

The device periodically broadcasts or multicasts an RA at a random interval between the maximum and minimum advertising interval.

The maximum advertising interval cannot be longer than the lifetime of advertised IP addresses. Otherwise, the lifetime is automatically adjusted to a value three times the maximum interval.

Examples

# On VLAN-interface 100, set the maximum advertising interval to 500 seconds and the minimum advertising interval to 300 seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp interval 500 300

Related commands

·     ip irdp

·     ip irdp lifetime

ip irdp multicast

Use ip irdp multicast to specify the multicast address 224.0.0.1 as the destination IP address of RAs sent on an interface.

Use undo ip irdp multicast to restore the default.

Syntax

ip irdp multicast

undo ip irdp multicast

Default

The destination IP address is 255.255.255.255.

Views

Interface view

Predefined user roles

network-admin

Examples

# Specify the multicast address 224.0.0.1 as the destination IP address for VLAN-interface 100 to send RAs.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp multicast

Related commands

ip irdp

ip irdp preference

Use ip irdp preference to specify the preference of advertised primary and secondary IP addresses on an interface.

Use undo ip irdp preference to restore the default.

Syntax

ip irdp preference preference-value

undo ip irdp preference

Default

The preference of advertised IP addresses is 0.

Views

Interface view

Predefined user roles

network-admin

Parameters

preference-value: Specifies the preference in the range of –2147483648 to 2147483647. A larger value represents a higher preference. To request neighboring hosts to not use any advertised IP address as the default gateway, set the value to the minimum value (–2147483648).

Examples

# Specify preference 1 for IP addresses advertised on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ip irdp preference 1

Related commands

ip irdp