To Customers and Partners
Please pay attentions for the following rommon bug if you are considering the migration from RP1 to RP2 by method that there are RP1 and RP2 in same Chassis.
The fix is in rommon 14.23 and later.
CSCva30444: ASR9922 RP1 to RP2 In Service Upgrade fail with rommon version > 14.11
Symptom: While performing ISSU following procedure listed in below doc, the TFTP download on RP2 is really slow and gets timeout. So it cannot boot up and download software from Active RP (RP1) https://supportforums.cisco.com/document/12751781/migrating-rp1-rp2-asr9000 Conditions: Rommon version greater than 14.11 Workaround: Downgrade to 14.10
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