show ipv6 router-advertisement
Syntax
show ipv6 router-advertisement <conflicts> <interface interface> <logical-system (all | logical-system-name)> <prefix prefix/prefix length>
Description
Display information about IPv6 router advertisements, including statistics about messages sent and received on interfaces, and information received from advertisements from other routers.
The router advertisement module does not function in the backup Routing Engine as the
Routing Engine does not send an acknowledgment message after receiving the packets. Starting
in Junos OS Release 22.2R1, you can view the router advertisement module information using
the show ipv6 router-advertisement operational
command.
Options
| none | Display all IPv6 router advertisement information for all interfaces. |
| conflicts | (Optional) Display only the IPv6 router advertisement information that is conflicting. |
| interface interface | (Optional) Display IPv6 router advertisement information for the specified interface. |
| logical-system (all | logical-system-name) | (Optional) Perform this operation on all logical systems or on a particular logical system. |
| prefix prefix/prefix length | (Optional) Display IPv6 router advertisement information for the specified prefix. |
Additional Information
The display identifies conflicting information by enclosing the value the router is advertising in brackets.
Required Privilege Level
view
Output Fields
Table 1 describes the output fields for the show ipv6 router-advertisement command. Output fields are listed in the approximate order in which
they appear.
Field Name |
Field Description |
|---|---|
|
|
Name of the interface. |
|
|
Number of router advertisements sent and the elapsed time since they were sent. |
|
|
Number of solicitation messages received. |
|
|
Number of router advertisements received. |
|
|
Names of interfaces from which router advertisements have been received and the elapsed time since the last one was received. |
|
|
Managed address configuration flag: |
|
|
Other stateful configuration flag: |
|
|
Time that a node identifies a neighbor as reachable after receiving a reachability confirmation, in milliseconds. |
|
|
Default lifetime, in seconds: from 0 seconds to 18.2 hours. A setting of 0 indicates that the router is not a default router. |
|
|
Time between retransmitted Neighbor Solicitation messages, in milliseconds. |
|
|
Configured current hop limit. |
|
|
Name and length of the prefix. |
|
|
How long the prefix remains valid for onlink determination. |
|
|
How long the prefix generated by stateless autoconfiguration remains preferred. |
|
|
Onlink flag: |
|
|
Autonomous address configuration flag: |
|
|
Configured interface as upstream interface for RA proxy |
|
|
Configured interface as downstream interface for RA proxy. |
|
|
Downstream interface for RA proxy. |
|
|
RA receive only mode is enabled. |
|
|
Proxy blackout timer interval is the time interval for which the interface must not be used as a proxy interface. Proxy functionality is disabled on that interface. |
|
|
Preference to select configured or proxied parameters for downstream interface |
|
|
Displays the details of the error. |
Sample Output
- show ipv6 router-advertisement (with RA and NAT64 IPv6 address prefix) (cSRX, MX Series, SRX Series, vMX, and vSRX)
- show ipv6 router-advertisement
- show ipv6 router-advertisement (Without RA proxy) (SRX Series and vSRX 3.0)
- show ipv6 router-advertisement conflicts
- show ipv6 router-advertisement prefix
- show ipv6 router-advertisement (Backup Routing Engine)
show ipv6 router-advertisement (with RA and NAT64 IPv6 address prefix) (cSRX, MX Series, SRX Series, vMX, and vSRX)
user@host> show ipv6 router-advertisement Interface: ge-0/0/0.0 Advertisements sent: 3, last sent 00:00:05 ago Solicits sent: 1, last sent 00:00:37 ago Solicits received: 0 Advertisements received: 0 Solicited router advertisement unicast: Disable IPv6 RA Preference: DEFAULT/MEDIUM Passive mode: Disable Upstream mode: Disable Downstream mode: Disable Proxy blackout timer: Not Running NAT prefix: 6000::/96 Lifetime: 8192 sec
show ipv6 router-advertisement
user@host> show ipv6 router-advertisement
Interface: fe-0/1/1.0
Advertisements sent: 0
Solicits received: 0
Advertisements received: 0
Interface: fxp0.0
Advertisements sent: 0
Solicits received: 0
Advertisements received: 1
Advertisement from fe80::2d0:b7ff:fe1e:7b0e, heard 00:00:13 ago
Managed: 0
Other configuration: 0 [1]
Reachable time: 0 ms
Default lifetime: 1800 sec
Retransmit timer: 0 ms
Current hop limit: 64
show ipv6 router-advertisement (Without RA proxy) (SRX Series and vSRX 3.0)
(Without RA proxy)
user@host> show ipv6 router-advertisement Interface: ge-0/0/1.0 Advertisements sent: 7, last sent 00:00:11 ago Solicits sent: 1, last sent 00:00:41 ago Solicits received: 0 Advertisements received: 0 Solicited router advertisement unicast: Disable IPv6 RA Preference: DEFAULT/MEDIUM Passive mode: Enable Upstream mode: Disable Downstream mode: Disable Proxy blackout timer: Not Running
(With RA proxy)
Interface: ge-0/0/2.0 Advertisements sent: 2, last sent 00:00:49 ago Solicits sent: 1, last sent 00:01:21 ago Solicits received: 0 Advertisements received: 18 Solicited router advertisement unicast: Disable IPv6 RA Preference: DEFAULT/MEDIUM Passive mode: Enable Upstream mode: Enable Downstream mode: Disable Proxy parameter preference: Proxied Proxy blackout timer: Not Running Downstream: ge-0/0/0.0 Downstream: ge-0/0/1.0 Advertisement from fe80::5668:adff:fed8:101b, heard 00:00:00 ago Managed: 0 Other configuration: 1 [0] Link MTU: 1500 bytes Reachable time: 5555 ms Default lifetime: 1799 sec [1800 sec] Retransmit timer: 4444 ms Current hop limit: 50 [64] RDNSS address: abcd:1::1 Lifetime: 3333 sec Prefix: 2002:2:0:2000::/64 Valid lifetime: 3600 sec Preferred lifetime: 2400 sec On link: 1 Autonomous: 1 Route Information: 2002:2:0:2000::/64 IPv6 RA Preference: LOW Route lifetime: 1111 sec DNSSL suffix: juniper.net Lifetime: 6666 sec
show ipv6 router-advertisement conflicts
user@host> show ipv6 router-advertisement conflicts
Interface: fxp0.0
Advertisement from fe80::2d0:b7ff:fe1e:7b0e, heard 00:01:08 ago
Other configuration: 0 [1]
show ipv6 router-advertisement prefix
user@host> show ipv6 router-advertisement prefix 2001:db8:8040::/16
Interface: fe-0/1/3.0
Advertisements sent: 3, last sent 00:04:11 ago
Solicits received: 0
Advertisements received: 3
Advertisement from fe80::290:69ff:fe9a:5403, heard 00:00:05 ago
Managed: 0
Other configuration: 0
Reachable time: 0 ms
Default lifetime: 180 sec [1800 sec]
Retransmit timer: 0 ms
Current hop limit: 64
Prefix: 2001:db8:8040:1::/64
Valid lifetime: 2592000 sec
Preferred lifetime: 604800 sec
On link: 1
Autonomous: 1
show ipv6 router-advertisement (Backup Routing Engine)
user@host> show ipv6 router-advertisement error: Module not running (routing)
Release Information
Command introduced before Junos OS Release 7.4.
Starting in Junos OS Release 22.1, we support RA proxy on SRX Series and vSRX 3.0 . This command output is modified to display the configured upstream interfaces, downstream interfaces, the proxy flag, the proxy blackout timer, and the passive mode information.