Upgrading the scb in the master routing engine – Juniper Networks MX480 User Manual
Page 204
As only one SCB has been upgraded, the alarm indicates that the SCBs are of mixed
type. This alarm is cleared after all the control boards are upgraded.
Upgrading the SCB in the Master Routing Engine
To upgrade the SCB in the master Routing Engine:
1.
Ensure a Graceful RE Switchover (GRES) to gracefully switch between the master
and backup Routing Engines, so that the backup RE becomes the master RE, by issuing
the
request chassis routing-engine master switch
command.
2.
Log in to the new master Routing Engine after the switchover.
3.
Switch the configuration mode to ensure that you are still in configure exclusive mode
by issuing the
exit
command and then the
configure exclusive
command, from the old
master Routing Engine.
4.
Log in to the current master Routing Engine again and issue the
configure exclusive
command.
5.
Power down the backup Routing Engine from the master Routing Engine by issuing
the
request system power-off other-routing-engine
command.
6.
Ensure that the Routing Engine is powered down by issuing the
show chassis
routing-engine 0
command.
user@host>
show chassis routing-engine 0
Routing Engine Status:
Slot 0:
Current State Present
Verify that the Current State is Present, which indicates that the Routing Engine is
offline.
7.
Take the first fabric plane of the backup Routing Engine offline by issuing the
request
chassis fabric plane 0 offline
command. SCB0 has four fabric planes numbered, 0, 1,
2, and 3.
8.
Verify that the fabric plane is offline by issuing the
show chassis fabric summary
command.
user@host>
show chassis fabric summary
Plane State Uptime
0 Offline
1 Online 3 minutes, 45 seconds
Verify that the State of Plane 0 is Offline.
9.
Take the remaining fabric planes offline by issuing the
request chassis fabric plane
1/2/3 offline
command—that is, by changing the fabric plane number each time. Verify
that the fabric planes are offline by issuing the command given in Step 4.
10.
Take the SCB in slot 0 offline by issuing the
request chassis cb offline slot 0
command.
11.
Verify that the control board is offline by issuing the
show chassis environment cb 0
command:
user@host>
show chassis environment cb 0
Copyright © 2013, Juniper Networks, Inc.
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MX480 3D Universal Edge Router Hardware Guide