Console access to the router and Router must be running release 5.3.2 or higher
System must not have 800G (tomahawk) line cards, (see caveat (a) in list below)
Before the upgrade process starts, and prior to removing any RP from the chassis, make sure that “show redundancy” shows NSR and standby card is ready.
Make sure any none 5.3.x software is removed from the system (ie admin install remove *4.3.4*)
Enable console logging on the router and on the terminal application (optional)
a)The system must NOT have Tomahawk(400G or 800G) Line cards in the chassis prior to attempting this as the EOBC link between Tomahawk and newly inserted RP2 will be down which will interfere with the failover from RP1 to RP2. If there are Tomahawk cards in the chassis, they need to be removed or powered down for the upgrade to be successful. ‘admin-config #hw-module power disable location 0/1/cpu0’
3) Upgrade process:
1)Issue show redundancy and make sure NSR and Standby card is ready
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