Juniper ACX2000

CHAPTER 2
Installing and Upgrading Junos OS
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Routing Engines and Storage Media Names (ACX Series, M Series, MX Series, PTX
Series, T Series, TX Matrix, TX Matrix Plus, and JCS 1200 Routers) on page 45
•
Boot Sequence on ACX Series Routers on page 48
•
Dual-Root Partitioning ACX Series Routers Overview on page 48
•
Understanding How the Primary Junos OS Image with Dual-Root Partitioning Recovers
on the ACX Series Router on page 49
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Junos OS Release 12.2 or Later Upgrades with Dual-Root Partitioning on ACX Series
Routers on page 51
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Installing Junos OS Using a USB Storage Device on ACX Series Routers on page 52
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Installing Junos OS Upgrades from a Remote Server on ACX Series Routers on page 52
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Example: Installing Junos OS and Configuring a Dual-Root Partition on ACX Series
Routers Using the CLI on page 53
•
Upgrading Software Packages on page 57
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Loading and Committing the Configuration File on page 60
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Checking the Current Configuration and Candidate Software Compatibility on page 61
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Unattended Boot Mode in ACX Series on page 61
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Understanding System Snapshot on an ACX Series Router on page 64
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Example: Taking a Snapshot of the Software and Configuration on page 65
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Understanding In-Service Software Upgrade (ISSU) in ACX5000 Series
Routers on page 68
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Performing an In-Service Software Upgrade (ISSU) in ACX5000 Series
Routers on page 69
Routing Engines and Storage Media Names (ACX Series, M Series, MX Series, PTX
Series, T Series, TX Matrix, TX Matrix Plus, and JCS 1200 Routers)
Table 15 on page 46 specifies the storage media names by Routing Engine. The storage
media device names are displayed when the router boots.
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