interfaces bridge <brx> ipv6 router-advert
Specifies the router advertisements to be sent from the bridge interface.
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.
- 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.