Cisco Cisco Packet Data Gateway (PDG)
Software Management Operations
Upgrading the Operating System Software ▀
ASR 5000 System Administration Guide, StarOS Release 18 ▄
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Session rejections or redirection
The following list defines LC features or services that will be unavailable:
No AAA packets or logs will be sent for each session reject or redirect
All other packets are discarded
Port counters will be unavailable
Port redundancy operations, if configured, will not be operational
All routing protocols, if enabled and configured, will be disabled
Routing tables will remain fixed (no updates) throughout the upgrade
PCF monitoring will be unavailable
Important:
Once Stage 2 has begun, no CLI configuration mode commands, except end and exit (if this
stage is entered while a management user is in a configuration mode) will be accepted by the system. Only non-
configuration commands within the Exec mode, such as show commands may be executed. You can monitor the
progress of the on-line software upgrade by entering the show upgrade command.
configuration commands within the Exec mode, such as show commands may be executed. You can monitor the
progress of the on-line software upgrade by entering the show upgrade command.
Once all of the packet processing cards are operating in stand-alone mode, the on-line software upgrade can proceed.
Stage 3 - Management Card Upgrade
During this stage, the system performs an SMC switchover, wherein all tasks running on the active SMC are transferred
to the standby SMC, which then becomes active and takes control of the system.
to the standby SMC, which then becomes active and takes control of the system.
The new standby SMC is then restarted and the new operating system software image is loaded onto that SMC. It is
important to note that the full CLI configuration that was temporarily saved by the system is not loaded at this point.
Instead, only minimal commands used to control the system are loaded.
important to note that the full CLI configuration that was temporarily saved by the system is not loaded at this point.
Instead, only minimal commands used to control the system are loaded.
Once this SMC is operational, another SMC switchover occurs and the second SMC is restarted, loading the new
software version. During this period, since both SMC are effectively now running the new operating system software
image, the system can continue to perform the on-line software upgrade process without waiting until the last SMC
finishes booting up and is placed into its normal standby operational mode.
software version. During this period, since both SMC are effectively now running the new operating system software
image, the system can continue to perform the on-line software upgrade process without waiting until the last SMC
finishes booting up and is placed into its normal standby operational mode.
Stage 4 - Reboot All Packet Processing Cards
In this stage, the active SMC is aware of all system and card-level states and tasks. All packet processing cards that are
in standby operational mode are restarted simultaneously, and after passing their Power On Self Test (POST)
diagnostics, their control processors (CPs) are loaded with the new operating system software image.
in standby operational mode are restarted simultaneously, and after passing their Power On Self Test (POST)
diagnostics, their control processors (CPs) are loaded with the new operating system software image.
The remaining packet processing cards, which may be enforcing overload policies that prevent any new sessions from
entering the system, are then migrated to the cards that are running the new operating system software. The overload
policies and minimal system tasks continue running on the newly upgraded packet processing cards. The original active
packet processing cards are then restarted, all at once, and upgraded to the new operating system software image.
entering the system, are then migrated to the cards that are running the new operating system software. The overload
policies and minimal system tasks continue running on the newly upgraded packet processing cards. The original active
packet processing cards are then restarted, all at once, and upgraded to the new operating system software image.
Important:
The system will only migrate as many active packet processing cards as there are standby cards. If
this is not a 1:1 correlation, the system will repeat this procedure of migrating - updating - migrating back until all
normally active packet processing cards have been upgraded.
normally active packet processing cards have been upgraded.
Once all of the cards have been upgraded and returned to their desired (normal) operating states, the system can proceed
to the final stage of the on-line software upgrade procedure.
to the final stage of the on-line software upgrade procedure.