Cisco 6807 VSS IOS Upgrade

[Jason107]

Hi,

I have two 6807 chassis with VSS architecture. Each Chassis has two VS-SUP2T-10Gs. Is the following upgrade process correct?

1.Upload IOS File to bootdisk:

#copy tftp: bootdisk:

#copy bootdisk: sw1-slot4-bootdisk:
#copy bootdisk: slavebootdisk:
#copy bootdisk: sw2-slot4-bootdisk:

2.Configure the boot statement to boot

(config)#no boot system flash bootdisk:/old_ios_name.bin

(config)#boot system flash bootdisk:/new_ios_name.bin

#show bootvar

#wr

3.All Device Reload

#reload

[Leo Laohoo]

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@Jason107 wrote:

1.Upload IOS File to bootdisk:

#copy tftp: bootdisk:

#copy bootdisk: sw1-slot4-bootdisk:
#copy bootdisk: slavebootdisk:
#copy bootdisk: sw2-slot4-bootdisk:

---

Don't do this.

Regardless whether or not the supervisor card is active or standby, always copy the IOS from the TFTP server.  

There's a step missing here:  After each copy to the supervisor cards, did you check the MD5 hash value of the IOS file vs the hash value found in the Cisco website?  

---

@Jason107 wrote:

2.Configure the boot statement to boot

(config)#no boot system flash bootdisk:/old_ios_name.bin

(config)#boot system flash bootdisk:/new_ios_name.bin 

---

This will work, however, it's is best to leave the old IOS behind in case the new IOS cannot be loaded.  

conf t
 NO boot system flash bootdisk:OLD_IOS.bin
 boot system flash bootdisk:new_ios.bin
 boot system flash bootdisk:OLD_IOS.bin
end
wr

One more extra step:  What is the config-registry value?

[Jason107]

Hi Sir,

Thank you for your reply.

Configuration register is 0x2102

----------------------------

relaod 

----------------------------

redundancy reload peer

redundancy force-switchover

----------------------------

Is the two methods correct?
Which method is better?

[Leo Laohoo]

I always use the "reload" command.

[Jason107]

Hi Sir,

Reload, Both chassis reboot together？
Each chassis have two VS-SUP2T-10G cards , that will not affect?

Thanks.

[Leo Laohoo]

Correct. If both don't reload together, then one of the two will go into ROMmon.
You could try using ISSU or FSU/eFSU if you want to reboot one chassis at a time.

[Jason107]

 Each chassis have two control cards, Will that switchover to the backup control card when it reboots?

[Leo Laohoo]

Nope. It'll reboot both chassis and all line cards.
If you want to boot only one chassis at a time, then FSU/eFSU is probably what you are looking for.

[Jason107]

Thank you for your reply.

[AhmedKhaledAhmed]

does that work if you have 1 sup in each 6807 switch ?