request virtual-chassis routing-engine master switch
Syntax
Release Information
Command introduced in Junos OS Release 11.2.
Option check introduced in Junos OS Release 12.2.
Command introduced in Junos OS Release 13.2R2 for EX Series switches.
Description
Change the mastership in an MX Series Virtual Chassis or EX9200 Virtual Chassis by switching the global roles of the master router or switch and backup router or switch in the Virtual Chassis configuration. The request virtual-chassis routing-engine master switch command must be issued from the master router or switch (VC-Mm).
The local roles (master and standby) of the Routing Engines in each member router or switch do not change after you issue the request virtual-chassis routing-engine master switch command.
 | Note: Before you issue the request virtual-chassis routing-engine master switch command from the master router or switch in the Virtual Chassis, make sure that the system configuration is synchronized between the master and backup router or switch. If the configuration is not synchronized, or if you attempt to issue the request virtual-chassis routing-engine master switch command from the backup router or switch instead of from the master router or switch, the device displays an error message and rejects the command. If you issue the request virtual-chassis routing-engine master switch command when the Virtual Chassis is in a transition state (for example, the backup router or switch is disconnecting from the Virtual Chassis), the device does not process the command. |
Options
check | — | (Optional) Perform a check from the master router or switch to determine whether the member routers or switches are ready for GRES from a database synchronization perspective, without initiating the GRES operation itself. |
Required Privilege Level
system-control
List of Sample Output
request virtual-chassis routing-engine master switch (From Master Router)request virtual-chassis routing-engine master switch (Error When Configuration Not Synchronized)
request virtual-chassis routing-engine master switch (Error When Run from Backup Router)
request virtual-chassis routing-engine master switch check (Ready for GRES)
request virtual-chassis routing-engine master switch check (Not Ready for GRES)
Sample Output
request virtual-chassis routing-engine master switch (From Master Router)
{master:member0-re0}user@host> request virtual-chassis routing-engine
master switchDo you want to continue ? [yes,no] (no)
request virtual-chassis routing-engine master switch (Error When Configuration Not Synchronized)
{master:member0-re0}user@host> request virtual-chassis routing-engine
master switchError: mastership switch request NOT honored, backup not ready
request virtual-chassis routing-engine master switch (Error When Run from Backup Router)
{backup:member1-re0}user@host1> request virtual-chassis routing-engine
master switcherror: Virtual Chassis member is not the protocol master
request virtual-chassis routing-engine master switch check (Ready for GRES)
{master:member0-re0}user@host> request virtual-chassis routing-engine
master switch check{master:member0-re0}request virtual-chassis routing-engine master switch check (Not Ready for GRES)
{master:member0-re0}user@host> request virtual-chassis routing-engine
master switch checkerror: chassisd Not ready for mastership switch, try after 217 secs. mastership switch request NOT honored, backup not ready
