Router advertisement commands

router-advertisement

Syntax

[no] router-advertisement

Context

config>service>vprn

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures router advertisement properties. By default, it is disabled for all IPv6 enabled interfaces.

The no form of this command disables all IPv6 interfaces. However, the no interface interface-name command disables a specific interface.

Default

disabled

interface

Syntax

[no] interface ip-int-name

Context

config>service>vprn>router-advertisement

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures router advertisement properties on a specific interface. The interface must already exist in the config>router>interface context.

Default

No interfaces are configured.

Parameters

ip-int-name

Specifies the interface name. If the string contains special characters (#, $, spaces, etc.), the entire string must be enclosed within double quotes.

current-hop-limit

Syntax

current-hop-limit number

no current-hop-limit

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the current-hop-limit in the router advertisement messages. It informs the nodes on the subnet about the hop-limit when originating IPv6 packets.

Default

64

Parameters

number

Specifies the hop limit number.

Values

0 to 255. A value of zero means there is an unspecified number of hops.

managed-configuration

Syntax

[no] managed-configuration

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command sets the managed address configuration flag. This flag indicates that DHCPv6 is available for address configuration in addition to any address autoconfigured using stateless address autoconfiguration.

Default

no managed-configuration

max-advertisement-interval

Syntax

[no] max-advertisement-interval seconds

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the maximum interval between sending router advertisement messages.

Default

600

Parameters

seconds

Specifies the maximum interval in seconds between sending router advertisement messages.

Values

4 to 1800

min-advertisement-interval

Syntax

[no] min-advertisement-interval seconds

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the minimum interval between sending ICMPv6 neighbor discovery router advertisement messages.

Default

200

Parameters

seconds

Specifies the minimum interval in seconds between sending ICMPv6 neighbor discovery router advertisement messages.

Values

3 to 1350

mtu

Syntax

[no] mtu mtu-bytes

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the MTU for the nodes to use to send packets on the link.

Default

no mtu

Parameters

mtu-bytes

Specifies the MTU for the nodes to use to send packets on the link.

Values

1280 to 9212

other-stateful-configuration

Syntax

[no] other-stateful-configuration

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command sets the "Other configuration" flag. This flag indicates that DHCPv6lite is available for autoconfiguration of other (non-address) information, such as DNS-related information or information about other servers in the network.

Default

no other-stateful-configuration

prefix

Syntax

[no] prefix [ipv6-prefix/prefix-length]

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures an IPv6 prefix in the router advertisement messages. To support multiple IPv6 prefixes, use multiple prefix statements. No prefix is advertised until explicitly configured using prefix statements.

Parameters

ip-prefix

Specifies the IP prefix for prefix list entry in dotted decimal notation.

Values

ipv4-prefix

a.b.c.d (host bits must be 0)

ipv4-prefix-length

0 to 32

ipv6-prefix

x:x:x:x:x:x:x:x (eight 16-bit pieces)

x:x:x:x:x:x:d.d.d.d

x:

[0 — FFFF]H

d:

[0 — 255]D

ipv6-prefix-length

0 to 128

prefix-length

Specifies a route must match the most significant bits and have a prefix length.

Values

1 to 128

autonomous

Syntax

[no] autonomous

Context

config>service>vprn>router-advert>if>prefix

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command specifies whether the prefix can be used for stateless address autoconfiguration.

Default

enabled

on-link

Syntax

[no] on-link

Context

config>service>vprn>router-advert>if>prefix

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command specifies whether the prefix can be used for onlink determination.

Default

enabled

preferred-lifetime

Syntax

[no] preferred-lifetime {seconds | infinite}

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the remaining length of time in seconds that this prefix continues to be preferred, such as, time until deprecation. The address generated from a deprecated prefix should not be used as a source address in new communications, but packets received on such an interface are processed as expected.

Default

604800

Parameters

seconds

Specifies the remaining length of time in seconds that this prefix continues to be preferred.

infinite

Specifies that the prefix is always preferred. A value of 4,294,967,295 represents infinity.

valid-lifetime

Syntax

valid-lifetime {seconds | infinite}

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command specifies the length of time in seconds that the prefix is valid for the purpose of on-link determination. A value of all one bits (0xffffffff) represents infinity.

The address generated from an invalidated prefix should not appear as the destination or source address of a packet.

Default

2592000

Parameters

seconds

Specifies the remaining length of time, in seconds, that this prefix continues to be valid.

infinite

Specifies that the prefix is always valid. A value of 4,294,967,295 represents infinity.

reachable-time

Syntax

reachable-time milli-seconds

no reachable-time

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures how long this router should be considered reachable by other nodes on the link after receiving a reachability confirmation.

Default

no reachable-time

Parameters

milli-seconds

Specifies the length of time in milliseconds the router should be considered reachable.

Values

0 to 3600000

retransmit-time

Syntax

retransmit-timer milli-seconds

no retransmit-timer

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command configures the retransmission frequency of neighbor solicitation messages.

Default

no retransmit-time

Parameters

milli-seconds

Specifies in milliseconds how often the retransmission should occur.

Values

0 to 1800000

router-lifetime

Syntax

router-lifetime seconds

no router-lifetime

Context

config>service>vprn>router-advert>if

Platforms

Supported on all 7210 SAS platforms as described in this document, except those operating in access-uplink mode

Description

This command sets the router lifetime.

Default

1800

Parameters

seconds

Specifies the length of time, in seconds, (relative to the time the packet is sent) that the prefix is valid for route determination.

Values

0, 4 to 9000 seconds. 0 means that the router is not a default router on this link.

ip-mtu

Syntax

ip-mtu octets

no ip-mtu

Context

config>service>vprn>if

Platforms

Supported on all 7210 SAS platforms as described in this document, including those operating in access-uplink mode

Description

This command configures the maximum IP transmit unit (packet) for the interface.

The MTU that is advertised from the VPRN size is:

MINIMUM((SdpOperPathMtu - EtherHeaderSize), (Configured ip-mtu))

By default (for Ethernet network interface) if no ip-mtu is configured, the packet size is (1568 - 14) = 1554.

The no form of this command reverts to the default value.

Default

no ip-mtu

Parameters

octets

Specifies the number of octets in the IP-MTU.

Values

512 to 9000