Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 360

Complete Software Guide for Junos
Options
Additional Information
256
®
OS for EX Series Ethernet Switches, Release 10.4
—Attempt to become the master Routing Engine.
acquire
—Request that the other Routing Engine become the master.
release
—Toggle mastership between Routing Engines.
switch
The , , and
acquire release 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.
all-lcc —(TX Matrix Plus routers only) Request to acquire mastership for all line-card
chassis (LCC).
—(TX Matrix and TX Matrix Plus routers only) On a TX Matrix router, the T640
lcc number
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.
—(Optional) Do not request confirmation for the switch.
no-confirm
—(TX Matrix routers only) TX Matrix (or switch-card chassis).
scc
—(TX Matrix Plus routers only) TX Matrix Plus router (or switch-fabric chassis).
sfc
—(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
to reinitialize the Flexible PIC Concentrators (FPCs) and restart the PICs. Interior gateway
protocol (IGP) and BGP convergence times depend on the specific network environment.
By default, the Routing Engine in slot 0 (RE0) is the master and the Routing Engine in
slot 1 (RE1) is the backup. To change the default master Routing Engine, include the
statement at the [
routing-engine
configuration. For more information, see the Junos OS System Basics Configuration Guide
To have the backup Routing Engine become the master Routing Engine, use the
chassis routing-engine master switch
master and then restart the chassis software for any reason, the master reverts to the
default setting.
NOTE: Although the configurations on the two Routing Engines do not have
to be the same and are not automatically synchronized, we recommend
making both configurations the same.
options have the following suboptions:
number
] hierarchy level in the
edit chassis redundancy
command. If you use this command to change the
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with a value from
request