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Cisco Bug: CSCvu20651 - Update ISSU recommendations in MDS 9000 NX-OS Software Upgrade and Downgrade Guide, Release 8.x

Last Modified

May 14, 2020

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

8.1(1)

Description (partial)

Symptom:
Clarify the two points in the following document:

MDS 9000 NX-OS Software Upgrade and Downgrade Guide, Release 8.x
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_x/upgrade/upgrade.html?dtid=osscdc000283


> We do not recommend the performance of an In-Service Software Upgrade (ISSU) simultaneously.

Does this mean you must upgrade all switches in a fabric one at a time ?

> ISSU on Cisco MDS 9132T, Cisco MDS 9148S, Cisco MDS 9250i, and Cisco MDS 9396S fabric switches is > recommended when these fabric switches are each other’s peers.

Does this mean that IF the named switches are ISL’d to one another, the CAN be upgraded simultaneously ?

Conditions:
All doing ISSU>
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