Upgrading Using Issu; Upgrading From Junos Release 9.2 Or Earlier On A Router Enabled For Both Pim And Nsr - Juniper JUNOS 10.1 - RELEASE NOTES REV 4 Release Note

JUNOS 10.1 Software Release Notes
To upgrade the software for a routing matrix, perform the following steps:
1.
2.
3.
4.
For the detailed procedure, see the
Routing Matrix with a TX Matrix Plus Feature Guide

Upgrading Using ISSU

Unified in-service software upgrade (ISSU) enables you to upgrade between two
different JUNOS Software releases with no disruption on the control plane and with
minimal disruption of traffic. Unified in-service software upgrade is only supported
by dual Routing Engine platforms. In addition, graceful Routing Engine switchover
(GRES) and nonstop active routing (NSR) must be enabled. For additional information
about using unified in-service software upgrade, see the Junos High Availability
Configuration Guide.
Upgrading from JUNOS Release 9.2 or Earlier on a Router Enabled for Both
PIM and NSR
JUNOS Release 9.3 introduced NSR support for PIM for IPv4 traffic. However, the
following PIM features are not currently supported with NSR. The commit operation
fails if the configuration includes both NSR and one or more of these features:
JUNOS 9.3 Release introduced a new configuration statement that disables NSR for
PIM only, so that you can activate incompatible PIM features and continue to use
NSR for the other protocols on the router: the
the
PIM features, not only incompatible features.)
If neither NSR nor PIM is enabled on the router to be upgraded or if one of the
unsupported PIM features is enabled but NSR is not enabled, no additional steps are
necessary and you can use the standard upgrade procedure described in other sections
of these instructions. If NSR is enabled and no NSR-incompatible PIM features are
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Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
Disable graceful Routing Engine switchover (GRES) on the master Routing Engine
(re0) and save the configuration change to both Routing Engines.
Install the new JUNOS Software release on the backup Routing Engine (re1) while
keeping the currently running software version on the master Routing Engine
(re0).
Load the new JUNOS Software on the backup Routing Engine. After making sure
that the new software version is running correctly on the backup Routing Engine
(re1), switch mastership back to the original master Routing Engine (re0) to
activate the new software.
Install the new software on the new backup Routing Engine (re0).
Anycast RP
Draft-Rosen multicast VPNs (MVPNs)
Local RP
Next-generation MVPNs with PIM provider tunnels
PIM join load balancing
hierarchy level. (Note that this statement disables NSR for all
[edit protocols pim]
Routing Matrix with a TX Matrix Feature Guide
.
nonstop-routing disable
or the
statement at