Upgrading Using Issu; Upgrading From Junos Os Release 9.2 Or Earlier On A Router Enabled For Both Pim And Nsr - Juniper JUNOS OS 10.4 - RELEASE NOTES Release Note

JUNOS OS 10.4 Release Notes
76
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.
To upgrade the software for a routing matrix, perform the following steps:
Disable graceful Routing Engine switchover (GRES) on the master Routing Engine
1.
(re0) and save the configuration change to both Routing Engines.
Install the new Junos OS release on the backup Routing Engine (re1) while keeping
2.
the currently running software version on the master Routing Engine (re0).
Load the new Junos OS on the backup Routing Engine. After making sure that the new
3.
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).
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 OS 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 OS Release 9.2 or Earlier on a Router Enabled for Both PIM
and NSR
Junos OS 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:
Anycast RP
Draft-Rosen multicast VPNs (MVPNs)
Local RP
Next-generation MVPNs with PIM provider tunnels
PIM join load balancing
Junos OS 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
hierarchy level. (Note that this statement disables NSR for all PIM features,
protocols pim]
not only incompatible features.)
Routing Matrix with a TX Matrix Feature Guide
.
nonstop-routing disable
Copyright © 2010, Juniper Networks, Inc.
or the
statement at the [edit