show system switchover
Syntax
Syntax (TX Matrix Router)
Syntax (TX Matrix Plus Router)
Syntax (MX Series Router)
Release Information
Command introduced before Junos OS Release 7.4.
Command introduced in Junos OS Release 9.0 for EX Series switches.
sfc option introduced for the TX Matrix Plus router in Junos OS Release 9.6.
Description
Display whether graceful Routing Engine switchover is configured, the state of the kernel replication (ready or synchronizing), any replication errors, and whether the primary and standby Routing Engines are using compatible versions of the kernel database.
 | Note: Issue the show system switchover command only on the backup Routing Engine. This command is not supported on the master Routing Engine. because the kernel-replication process daemon does not run on the master Routing Engine. This process runs only on the backup Routing Engine. Beginning Junos OS Release 9.6, the show system switchover command has been deprecated on the master Routing Engine on all routers other than a TX Matrix (switch-card chassis) or a TX Matrix Plus (switch-fabric chassis) router. However, in a routing matrix, if you issue the show system switchover command on the master Routing Engine of the TX Matrix router (or switch-card chassis), the CLI displays graceful switchover information for the master Routing Engine of the T640 routers (or line-card chassis) in the routing matrix. Likewise, if you issue the show system switchover command on the master Routing Engine of a TX Matrix Plus router (or switch-fabric chassis), the CLI displays output for the master Routing Engine of T1600 or T4000 routers in the routing matrix. |
Options
all-chassis | — | (TX Matrix routers and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display graceful Routing Engine switchover information for all Routing Engines on the TX Matrix router and the T640 routers configured in the routing matrix. On a TX Matrix Plus router, display graceful Routing Engine switchover information for all Routing Engines on the TX Matrix Plus router and the T1600 or T4000 routers configured in the routing matrix. |
all-lcc | — | (TX Matrix routers and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display graceful Routing Engine switchover information for all T640 routers (or line-card chassis) connected to the TX Matrix router. On a TX Matrix Plus router, display graceful Routing Engine switchover information for all connected T1600 or T4000 LCCs. Note that in this instance, packets get dropped. The LCCs perform GRES on their own chassis (GRES cannot be handled by one particular chassis for the entire router) and synchronization is not possible as the LCC plane bringup time varies for each LCC. Therefore, when there is traffic on these planes, there may be a traffic drop. |
all-members | — | (MX Series routers only) (Optional) Display graceful Routing Engine switchover information for all Routing Engines on all members of the Virtual Chassis configuration. |
lcc number | — | (TX Matrix routers and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display graceful Routing Engine switchover information for a specific T640 router connected to the TX Matrix router. On a TX Matrix Plus router, display graceful Routing Engine switchover information for a specific router connected to the TX Matrix Plus router. Replace number with the following values depending on the LCC configuration:
|
local | — | (MX Series routers only) (Optional) Display graceful Routing Engines switchover information for all Routing Engines on the local Virtual Chassis member. |
member member-id | — | (MX Series routers only) (Optional) Display graceful Routing Engine switchover information for all Routing Engines on the specified member of the Virtual Chassis configuration. Replace member-id with a value of 0 or 1. |
scc | — | (TX Matrix router only) (Optional) Display graceful Routing Engine switchover information for the TX Matrix router (or switch-card chassis). |
sfc | — | (TX Matrix Plus routers only) (Optional) Display graceful Routing Engine switchover information for the TX Matrix Plus router. |
Additional Information
If you issue the show system switchover command on a TX Matrix backup Routing Engine, the command is broadcast to all the T640 backup Routing Engines that are connected to it.
Likewise, if you issue the show system switchover command on a TX Matrix Plus backup Routing Engine, the command is broadcast to all the T1600 or T4000 backup Routing Engines that are connected to it.
If you issue the show system switchover command on the active Routing Engine in the master router of an MX Series Virtual Chassis, the router displays an error message that graceful Routing Engine switchover (GRES) is not enabled on this member.
Required Privilege Level
view
List of Sample Output
show system switchover (Backup Routing Engine)show system switchover all-lcc (Routing Matrix)
Output Fields
Table 1 describes the output fields for the show system switchover command. Output fields are listed in the approximate order in which they appear.
Table 1: show system switchover Output Fields
Field Name | Field Description |
|---|---|
Graceful switchover | Display graceful Routing Engine switchover status:
|
Configuration database | State of the configuration database:
|
Kernel database | State of the kernel database:
|
Peer state | Routing Engine peer state:
|
Sample Output
show system switchover (Backup Routing Engine)
user@host> show system switchover Graceful switchover: On Configuration database: Ready Kernel database: Ready Peer state: Steady State
show system switchover all-lcc (Routing Matrix)
user@host> show system switchover all-lcc lcc0-re0: -------------------------------------------------------------------------- Multichassis replication: On Configuration database: Ready Kernel database: Ready Peer state: Steady State lcc2-re0: -------------------------------------------------------------------------- Multichassis replication: On Configuration database: Ready Kernel database: Ready Peer state: Steady State
