Setting Up Supervisor Redundancy in a 6500

[mrashby]

All,

I am configuring a Cat 6500 with 2 WS-SUP720-3B engines. How do I configure these two engines for redundany? Is there a configuration for this or do you just install them and the software automatically sets the priority. I am asking because I have never set up 2 engines before. Any help would be great.

[pbarman · Accepted solution]

Just install the two supervisors and then paste these commands below. This will enable stateful redundancy on the supervisors which is what is recommended.

redundancy

mode sso

main-cpu

auto-sync running-config

auto-sync standard

Please make sure that the supervisors have the same IOS version. And its a good idea to have the IOS versions loaded in disk0: and sup-bootflash: on both supervisor engines and have boot statements like this in the config:

boot system flash sup-bootflash:s72033-pk9sv-mz.122-18.SXD7.bin

boot system flash disk0:s72033-pk9sv-mz.122-18.SXD7.bin

[pbarman]

Use "show redundancy" to verify. Output will be similar to this:

sh redundancy

Redundant System Information :

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

Available system uptime = 7 weeks, 4 days, 17 hours, 27 minutes

Switchovers system experienced = 2

Standby failures = 0

Last switchover reason = active unit removed

Hardware Mode = Duplex

Configured Redundancy Mode = sso

Operating Redundancy Mode = sso

Maintenance Mode = Disabled

Communications = Up

Current Processor Information :

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

Active Location = slot 5

Current Software state = ACTIVE

Uptime in current state = 7 weeks, 3 days, 14 hours, 37 minutes

Image Version = Cisco Internetwork Operating System Software

IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD7, RELEASE S

OFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Tue 13-Dec-05 23:17 by kellythw

BOOT = sup-bootflash:s72033-pk9sv-mz.122-18.SXD7.bin,1

;disk0:s72033-pk9sv-mz.122-18.SXD7.bin,1

CONFIG_FILE =

BOOTLDR =

Configuration register = 0x2102

Peer Processor Information :

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

Standby Location = slot 6

Current Software state = STANDBY HOT

Uptime in current state = 7 weeks, 3 days, 14 hours, 36 minutes

Image Version = Cisco Internetwork Operating System Software

IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD7, RELEASE S

OFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Tue 13-Dec-05 23:17 by kellythw

BOOT = sup-bootflash:s72033-pk9sv-mz.122-18.SXD7.bin,1

;disk0:s72033-pk9sv-mz.122-18.SXD7.bin,1

CONFIG_FILE =

BOOTLDR =

Configuration register = 0x2102

[mrashby]

Thanks

[ariklingman]

I am trying to add a second sup to an online 6500 system. Assuming all the IOS versions etc. match. Can I just add the second sup and add the redundancy commands?

Will it come online as standby? Are there any steps I need to take to make sure it has a "copy" of the config? Will the process take the switch offline (I assume a reset will be necessary)?

Thanks in advance.

[ariklingman]

Also, this is a system running Sup1As and I would be adding a Sup1A. Do the commands remain the same?

Thanks