Nexus 5548UP Upgrade

[jonahbasik]

Hi All,

I was hoping to get some feedback about the approach I was going to take for a Nexus upgrade.

The current code is 5.2(1)N1(7) and I intend on migrating to 7.3(3)N1(1). There are two switches in a VPC configuration with no FEXs involved and no FC. The switches are pure L2 and serve as the access layer to a UCS blade center.

The upgrade will be done under a maintennace window and I intend to take one of the following paths:

ISSU

5.2(1)N1(7) > 7.0(8)N1(1) > 7.1(4)N1(1) > 7.3(3)N1(1)

Or to save some time due to limited window

Part ISSU then Disruptive

5.2(1)N1(7) > 7.0(8)N1(1) then disruptive to 7.3(3)N1(1)

The question was whether a disruptive upgrade from 7.0(8)N1(1) to 7.3(3)N1(1) may trigger bug CSCul22703 which can cause config loss with a disruptive upgrade. Looking over the bugid it looks to affect only 5.2(1)N1 and some 6.x code. Could anyone confirm if this bug also affects other code versions?

[AVRAHAM NINO]

Hello,

I would not recommend jumping directly from 7.0(8)N1(1)  to   7.3(3)N1(1) .

Go the long way 5.2(1)N1(7) > 7.0(8)N1(1) > 7.1(4)N1(1) > 7.3(3)N1(1) .

If I remember correctly, there is a bios upgrade between 7.0(8)N1(1)  and  7.1(4)N1(1) .

Read the messages you might be requested to power off the switch after it comes up.

There might also be configuration changes, make sure to have full backup and status. 

[andy!doesnt!like!uucp]

Hello Avraham
what about 7.0(4)N1(1) instead of 7.0(8)N1(1) as interim version?

according to https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/upgrade/714_N1_1/n5500_upgrade_downgrade_714_n1_1.html#Supported%20Upgrade%20and%20Downgrade%20Paths%20for%20Cisco%20NX-OS%20Release%207.3(1)N1(1) it's quite possible.

[andy!doesnt!like!uucp]

Short report:
disruptive upgrades series

5.1(3)N1(1a)>5.1(3)N2(1)>5.2(1)N1(1)>7.0(4)N1(1)>7.1(4)N1(1)>7.3(3)N1(1)

on 2 vPC pairs with 8 dualhomed FEXs each went smoothly. But a lot of gemorrous with FEX reload leads to dramatical upgrade window extension (one pair took 8 hours).

[StanleyF]

I followed the below path as suggested by Cisco TAC

The Upgrade path is: 5.0(3)N2(1) --> 5.2(1)N1(9b) --> 7.0(8)N1(1) --> 7.1(5)N1(1) --> 7.3(3)N1(1)

I ran into a hurdle upgrading from 7.0.8 to 7.1.5, not a resume generating event but I did lose the IP configuration for my management interface. We don't have a KVM/terminal server for console access so it caused panic.

Make sure you keep frequent backup copies of your config.

[smakbarzada]

Check ISSU impact prior to upgrade

Recently I upgrade from 5 to 7.3.3 considering the following upgrade path

5 >6.0.2>7.0.8>7.1.5 >7.3.3

Good luck

Network Consultant DC

[smakbarzada]

Check ISSU impact prior to upgrade

Recently I upgrade from 5 to 7.3.3 considering the following upgrade path

5 >6.0.2>7.0.8>7.1.5 >7.3.3

Good luck

Network Consultant DC