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Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

interfaces bridge <brx> ipv6 router-advert

Specifies the router advertisements to be sent from the bridge interface.

set interfaces bridge brx ipv6 router-advert [cur-hop-limit limit I default-lifetime lifetime I default-preference preference I link-mtu mtu I managed-flag state I max-interval interval I min-interval interval I other-config-flag state I prefix ipv6net [autonomous-flag state | on-link-flag state | preferred-lifetime lifetime | valid-lifetime lifetime] I reachable-time time I retrans-timer time I send-advert state]
delete interfaces bridge brx ipv6 router-advert [cur-hop-limit I default-lifetime I default-preference I link-mtu I managed-flag I max-interval I min-interval I other-config-flag I prefix ipv6net [autonomous-flag | on-link-flag | preferred-lifetime | valid-lifetime] I reachable-time I retrans-timer I send-advert]
show interfaces bridge brx ipv6 router-advert

Router advertisements are not sent on an interface.

brx
Bridge group ID.
cur-hop-limit limit
Specifies the Hop Count field of the IP header for outgoing (unicast) IP packets. This value is placed in the Hop Count field of the IP header for outgoing (unicast) IP packets. The range is 0 to 255. The default is 64. A value of 0 means unspecified by the router.
default-lifetime lifetime
Specifies the lifetime, in seconds, associated with the default router. Supported values are 0, which indicates that the router is not a default router, and the range from the value is configured for the max-interval option to 9000 (18.2 hours). If not configured, the value for this timer is three times max-interval.
default-preference preference
The preference associated with the default router. Supported values are as follows: low: The default router is low preference. medium: The default router is medium preference. high: The default router is high preference.The default is medium.
link-mtu mtu
The MTU value to be advertised for the link. The range of values is 0, or 1280 to the maximum MTU for the type of link, as defined in RFC 2464. The default is 0, which means the MTU is not specified in the router advertisement message. That is because it is expected that the MTU will be configured directly on the interface itself and not for routing advertisements. You can configure this option in cases where the link MTU is not well known.

If the value set here does not match the MTU configured on the interface, the system issues a warning but does not fail.

managed-flag state
Whether to use the administered protocol for address autoconfiguration. Supported values are as follows: true: Hosts use the administered (stateful) protocol for address autoconfiguration in addition to any addresses autoconfigured using stateless address autoconfiguration. false: Hosts use only stateless address autoconfiguration. The default is false.
max-interval interval
The maximum time, in seconds, allowed between sending unsolicited multicast router advertisements from the interface. The range of supported values is 4 to 1800.
The default is 600 (10 minutes).
min-interval interval
The minimum time, in seconds, allowed between sending unsolicited multicast router advertisements from the interface. The range of supported values is 3 to 0.75 * max-interval. The default is 0.33 * max-interval.
other-config-flag state
The interface uses the administered (stateful) protocol for autoconfiguration of non-address information, as defined in RFC 4862. Supported values are as follows: true: Hosts use the administered protocol for autoconfiguration of non-address information. false: Hosts use stateless autoconfiguration of non-address information.The default is false.
prefix ipv6net
Multi-node. The IPv6 prefix to be advertised on the IPv6 interface, in the format ipv6-address/prefix.

You can define more than one IPv6 prefix by configuring multiple prefix configuration nodes.

autonomous-flag state
Specifies whether the prefix can be used for autonomous address configuration as defined in RFC 4862. Supported values are as follows: true: The prefix can be used for autonomous address configuration. false: The prefix cannot be used for autonomous address configuration. The default is true.
on-link-flag state
Specifies whether the prefix can be used for on-link determination, as defined in RFC 4862. Supported values are as follows: true: The prefix can be used for on-link determination. false: The advertisement makes no statement about on-link or off-link properties of the prefix. For instance, the prefix might be used for address configuration with some addresses belonging to the prefix being on-link and others being off-link. The default is true.
preferred-lifetime lifetime
The length of time, in seconds, that the addresses generated from the prefix through Stateless Address Autoconfiguration (SLAAC) is to remain preferred, as defined in RFC 4862. The interval is with respect to the time the packet is sent. The range is 1 to 4294967296 plus the keyword infinity, which represents forever. (The actual value of infinity is a byte where all bits are set to ones: 0XFFFFFFFF.) The default is 604800 (seven days).
valid-lifetime lifetime
The length of time, in seconds, that the prefix is valid for the purpose of on-link determination, as defined in RFC 4862. The interval is with respect to the time the packet is sent. The range is 1 to 4294967296 plus the keyword infinity, which represents forever. (The actual value of infinity is a byte where all bits are set to ones: 0XFFFFFFFF.) The default is 2592000 (30 days).
reachable-time time
The length of time, in milliseconds, for which the system assumes a neighbor is reachable after having received a reachability confirmation. This value is used by address resolution and the Neighbor Unreachability Detection algorithm (see Section 7.3 of RFC 2461). The range is 0 to 3600000, where a value of 0 means the reachable time is not specified in the router advertisement message. The default is 0.
retrans-timer time
The length of time, in milliseconds, between retransmitted NS messages. This value is used by address resolution and the Neighbor Unreachability Detection algorithm (see Sections 7.2 and 7.3 of RFC 2461). The range of supported values is 0 to 4294967295, where a value of 0 means the retransmit time is not specified in the router advertisement message. The default is 0.
send-advert state
Specifies whether router advertisements are to be sent from this interface. Supported values are as follows: true: Sends router advertisements from this interface. false: Does not send router advertisements from this interface. If this value is in effect, parameters in this configuration subtree are still used to configure the local implementation parameters. The default is true.

Configuration mode


interfaces bridge brx {
	  ipv6 {
		   	router-advert {
		      	cur-hop-limit limit
			      default-lifetime lifetime
	      		default-preference preference
		      	link-mtu mtu
	      		managed-flag state
	      		max-interval interval
		      	min-interval interval
		      	other-config-flag state
	      		prefix ipv6net {
			         	autonomous-flag state
		         		on-link-flag state
		         		preferred-lifetime lifetime
			         	valid-lifetime lifetime
		     	}
		     	reachable-time time
	     		retrans-timer time
		     	send-advert state
		  }
	 }	
}

Use this command to configure router advertisements (RAs) to be sent out of the interface being configured.

Router advertisements are sent out by IPv6 routers in order to advertise their existence to hosts on the network. IPv6 hosts do not send out router advertisements.

If the router-advert node of the configuration tree is missing, router advertisements are not sent out. Also, if IPv6 forwarding is disabled either globally (using the system ipv6 disable-forwarding command ) or on the interface (using the interfaces bridge brx ipv6 disable-forwarding command), router advertisements are not sent out.

Most router advertisement parameters are required by either the Neighbor Discovery (ND) protocol or the Stateless Address Autoconfiguration (SLAAC) protocol. These parameters are used both locally for the IPv6 implementation and become part of the RA messages sent to hosts on the network so that they can be configured appropriately.

Use the set form of this command to create the router-advert configuration node and begin to send router advertisements.

Use the delete form of this command to remove router-advert configuration node and stop sending router advertisements.

Use the show form of this command to view router advertisement configuration.