router-advertisement
Syntax
router-advertisement {
interface interface-name {
current-hop-limit current-hop-limit;
default-lifetime seconds;
dns-search-list name {
lifetime seconds;
}
dns-server-address name {
lifetime seconds;
}
downstream name;
downstream-mode;
(link-mtu | no-link-mtu);
(managed-configuration | no-managed-configuration);
max-advertisement-interval seconds;
min-advertisement-interval seconds;
nat-prefix name {
lifetime seconds;
}
(other-stateful-configuration | no-other-stateful-configuration);
parameter-preference (configured | proxied);
passive-mode;
preference (high | low | medium);
prefix name {
(autonomous | no-autonomous);
(on-link | no-on-link);
preferred-lifetime seconds;
valid-lifetime seconds;
}
reachable-time milliseconds;
retransmit-timer milliseconds;
rio-prefix name {
rio-lifetime seconds;
rio-preference (high | low | medium);
}
solicit-router-advertisement-unicast;
upstream-mode;
virtual-router-only;
}
ra-secure {
accept-current-hop-limit-max unit;
accept-current-hop-limit-min unit;
accept-reachable-time-max milliseconds;
accept-reachable-time-min milliseconds;
accept-retransmit-time-max milliseconds;
accept-retransmit-time-min milliseconds;
}
traceoptions {
file filename <files files> <size size> <world-readable | no-world-readable>;
flag name;
}
}Hierarchy Level
[edit logical-systems name protocols], [edit protocols]
Description
Configure router advertisement to multicast router’s availability. Router advertisement announces the address autoconfiguration and discovers the link local addresses of the neighboring routers. The router discovery messages enables the host to discover the existence of neighboring routers. Router advertisment messages contain prefixes that are used for address autoconfiguration.
Options
| accept-current-hop-limit-max |
(Optional) Current hop limit acceptable maximum for incoming RA.
|
| accept-current-hop-limit-min |
(Optional) Current hop limit acceptable minimum for incoming RA.
|
| accept-reachable-time-max |
(Optional) Reachable time acceptable maximum for incoming RA.
|
| accept-reachable-time-min |
(Optional) Reachable time acceptable minimum for incoming RA.
|
| accept-retransmit-time-max |
(Optional) Retransmit Time acceptable maximum for incoming RA.
|
| accept-retransmit-time-min |
(Optional) Retransmit Time acceptable min for incoming RA (1000..3600000 milliseconds).
|
| autonomus |
(Optional) Indicates the value to be placed in the autonomous flag field in the prefix information option. The "autonomous address-configuration flag", indicates if the option applies to the stateless autoconfiguration. |
| no-autonomus |
(Optional) Indicates to silently ignore the prefix information option as stateless autoconfiguration is not applicable. |
| current-hop-limit |
(Optional) Current hop limit is the default value placed in the hop count field of the IP header for outgoing packets.
|
| default-lifetime |
(Optional) Router lifetime is the lifetime associated with a default router.
|
| dns-search-list |
(Optional) DNS search list configuration. |
| dns-server-address |
(Optional) Recursive DNS address configuration. |
| downstream |
(Optional) Used to configure the list of downstream interfaces a given upstream interface. |
| downstream-mode |
(Optional) Used for the interface as downstream interface for RA proxy. |
| file |
(Optional) Trace file options. |
| flag |
(Optional) Tracing parameters. |
| link-mtu |
(Optional) Link MTU. Include the maximum transmission unit (MTU). |
| no-link-mtu |
(Optional) Don't link MTU. Does not include the maximum transmission unit (MTU). |
| managed-configuration |
(Optional) Set managed address configuration. Enable host to use stateful autoconfiguration. |
| no-managed-configuration |
(Optional) Don't set managed address configuration. Disable host from using stateful autoconfiguration. |
| max-advertisement-interval |
(Optional) Maximum advertisement interval. Set the maximum interval between each router advertisement message.
|
| min-advertisement-intervalseconds |
(Optional) Minimum advertisement interval. Set the minimum interval between each router advertisement message.
|
| other-stateful-configuration |
(Optional) Set other stateful configuration. Enable autoconfiguration of other nonaddress-related information. |
| no-other-stateful-configuration |
(Optional) Don't set other stateful configuration. Disable autoconfiguration of other nonaddress-related information. |
| parameter-preference |
(Optional) Used for RA proxy. The TLVs/options from RA packet will be proxied if parameter-preference is set as “proxied”. If parameter-preference is set as “configured”, configured options will have preference and configured options will be sent in the RA packet. |
| passive-mode |
(Optional) RA receive only mode. |
| preference |
(Optional) Set the preference for router selection. |
| prefix |
(Optional) Specifies the prefixes that are on-link and/or are advertised for stateless-address autoconfiguration. |
| nat-prefix |
(Optional) Used to configure NAT prefix to be advertised in the RA packet. |
| preferred-lifetime |
(Optional) Indicates the length of time in seconds (relative to the time the packet is sent) for which addresses are generated from the prefix via stateless address autoconfiguration remain preferred. |
| reachable-time |
(Optional) Reachable time. Set the length of time that a node considers a neighbor reachable until another reachability confirmation is received from that neighbor.
|
| retransmit-timerseconds |
(Optional) Retransmit timer. Set the retransmission frequency of neighbor solicitation messages.
|
| rio-prefix |
(Optional) Route information option configuration. |
| rio-lifetime |
(Optional) Time in seconds for which the advertised route information in the route information option is valid. |
| rio-preference |
(Optional) High, Low, or Medium preference value indicates whether to prefer the advertised route information in the route information option over other default routes. |
| solicit-router-advertisement-unicast |
(Optional) Enable solicited router advertisement as unicast. |
| upstream-mode |
(Optional) Used for RA proxy, when enabled for upstream interface. The packets received on the upstream interface will be proxied to one or more downstream interfaces. |
| valid-lifetime |
(Optional) Indicates the length of time in seconds (relative to the time the packet is sent) for which the prefix is valid for the purpose of on-link determination. |
| virtual-router-only |
(Optional) Send advertisements only for vrrp-inet6-group.
|
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.