For more information about configuring the draft-rosen Multicast VPN feature, see
the
JUNOS Multicast Configuration Guide
.
Upgrading the Software for a Routing Matrix
A routing matrix can use either a TX Matrix router as the switch-card chassis (SCC)
or a TX Matrix Plus router as the switch-fabric chassis (SFC). By default, when you
upgrade software for a TX Matrix router or a TX Matrix Plus router, the new image
is loaded onto the TX Matrix or TX Matrix Plus router (specified in the JUNOS CLI by
using the
scc
or
sfc
option) and distributed to all T640 routers or T1600 routers in
the routing matrix (specified in the JUNOS CLI by using the
lcc
option). To avoid
network disruption during the upgrade, ensure the following conditions before
beginning the upgrade process:
■
A minimum of free disk space and DRAM on each Routing Engine. The software
upgrade will fail on any Routing Engine without the required amount of free disk
space and DRAM. To determine the amount of disk space currently available on
all Routing Engines of the routing matrix, use the CLI
show system storage
command. To determine the amount of DRAM currently available on all the
Routing Engines in the routing matrix, use the CLI
show chassis routing-engine
command.
■
The master Routing Engines of the TX Matrix or TX Matrix Plus router (SCC or
SFC) and T640 routers or T1600 routers (LCC) are all re0 or are all re1.
■
The backup Routing Engines of the TX Matrix or TX Matrix Plus router (SCC or
SFC) and T640 routers or T1600 routers (LCC) are all re1 or are all re0.
■
All master Routing Engines in all routers run the same version of software. This
is necessary for the routing matrix to operate.
■
All master and backup Routing Engines run the same version of software before
beginning the upgrade procedure. Different versions of the JUNOS Software can
have incompatible message formats especially if you turn on GRES. Because the
steps in the process include changing mastership, running the same version of
software is recommended.
■
For a routing matrix with a TX Matrix router, the same Routing Engine model is
used within a TX Matrix router (SCC) and within a T640 router (LCC) of a routing
matrix. For example, a routing matrix with an SCC using two RE-A-2000s and
an LCC using two RE-1600s is supported. However, an SCC or an LCC with two
different Routing Engine models is not supported. We suggest that all Routing
Engines be the same model throughout all routers in the routing matrix. To
determine the Routing Engine type, use the CLI
show chassis hardware | match
routing command
.
■
For a routing matrix with a TX Matrix Plus router, the SFC contains two model
RE-DUO-C2600-16G Routing Engines, and each LCC contains two model
RE-DUO-C1800-8G Routing Engines.
NOTE:
It is considered best practice to make sure that all master Routing Engines
are re0 and all backup Routing Engines are re1 (or vice versa). For the purposes of
this document, the master Routing Engine is re0 and the backup Routing Engine is
re1.
Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
■
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Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
