Juniper JUNOS OS 10.3 - SOFTWARE Manual page 337

Options
Additional Information
Copyright © 2010, Juniper Networks, Inc.
NOTE: Successive graceful Routing Engine switchover events must be a
minimum of 240 seconds (4 minutes) apart after both Routing Engines have
come up.
If the router or switch displays a warning message similar to "Standby Routing
Engine is not ready for graceful switchover. Packet Forwarding Engines that
are not ready for graceful switchover might be reset," do not attempt
switchover. If you choose to proceed with switchover, only the Packet
Forwarding Engines that were not ready for graceful switchover are reset.
None of the Flexible PIC concentrators (FPCs) should spontaneously restart.
We recommend that you wait until the warning no longer appears and then
proceed with the switchover.
—Attempt to become the master Routing Engine.
acquire
release —Request that the other Routing Engine become the master.
—Toggle mastership between Routing Engines.
switch
The acquire , release , and switch
—(TX Matrix and TX Matrix Plus routers only) On a routing matrix composed
all-chassis
of a TX Matrix router and the attached T640 routers, switch mastership on all the
Routing Engines in the routing matrix. Likewise, on a routing matrix composed of a
TX Matrix Plus router and the attached T1600 routers, switch mastership on all the
Routing Engines in the routing matrix.
—(TX Matrix Plus routers only) Request to acquire mastership for all line-card
all-lcc
chassis (LCC).
lcc number —(TX Matrix and TX Matrix Plus routers only) On a TX Matrix router, the T640
router (or LCC) that is connected to the TX Matrix router (or switch-card chassis).
On a TX Matrix Plus router, the T1600 router (or LCC) that is connected to the TX
Matrix Plus router (or switch-fabric chassis). Replace
0 through 3.
no-confirm —(Optional) Do not request confirmation for the switch.
—(TX Matrix routers only) TX Matrix (or switch-card chassis).
scc
sfc —(TX Matrix Plus routers only) TX Matrix Plus router (or switch-fabric chassis).
—(Optional) Available only with the acquire option. Force the change to a new
force
master Routing Engine.
Because both Routing Engines are always running, the transition from one to the other
as the master Routing Engine is immediate. However, the changeover interrupts
communication to the System and Switch Board (SSB). The SSB takes several seconds
Chapter 17: Operational Mode Commands for System Setup
options have the following suboptions:
number
with a value from
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