04-01-2013 01:27 AM - edited 07-03-2021 11:49 PM
Hello!
We have two 7.4.100 controllers is AP SSO pair.
HA pair was configured according to HA guide
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bd3504.shtml
When I shutdown the Primary WLC, Secondary doesn't take his role until Primary starts booting up.
When primary is shutdown from Secondary CLI it is seen:
(Cisco Controller-Standby) >show redundancy summary
Redundancy Mode = SSO ENABLED
Local State = STANDBY HOT
Peer State = ACTIVE
Unit = Secondary - HA SKU (Inherited AP License Count = 100)
The secondary stays in Peer State = ACTIVE state until Primary begins boot process.
When Primary begins the boot process, Secondary immediatly takes his role.
This behaviour doesn't look like right High Availibilty switchover.
Solved! Go to Solution.
04-01-2013 03:36 AM
You need to maybe just shut the power off to the primary to force the secondary HA to take the primary role. The reboot of a WLC isn't part of the HA process. If you want to simulate an HA failover, take a look at this link.
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bd3504.shtml#simulate
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04-01-2013 11:29 AM
HI,
have you tried to unplug the ethernet cables from the primary and see if the switch over works?
i have seen it before "when you power off, the HA doesnt work, it works only when you unplug the primary ethernet cables from the switch"
please let me know if you are able to test.
if the HA works when unplugging ethernet, i guess you are hitting
hope it helps.
04-01-2013 03:36 AM
You need to maybe just shut the power off to the primary to force the secondary HA to take the primary role. The reboot of a WLC isn't part of the HA process. If you want to simulate an HA failover, take a look at this link.
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bd3504.shtml#simulate
Sent from Cisco Technical Support iPhone App
04-01-2013 04:14 AM
You need to maybe just shut the power off to the primary to force the secondary HA to take the primary role.
I described exactly the same situation. When I wrote shutdown, I meant power off.
After severel time reboot of both controllers, failover began to work fine. When Primary is powered off, standby immediately takes his role.
Rather strange...
Thank you for the link!
04-01-2013 04:24 AM
Well HA isn't very stable at the moment with 7.3 or 7.4. So if you run into any stability issues can you please post them.
Thanks!
Sent from Cisco Technical Support iPhone App
04-01-2013 11:29 AM
HI,
have you tried to unplug the ethernet cables from the primary and see if the switch over works?
i have seen it before "when you power off, the HA doesnt work, it works only when you unplug the primary ethernet cables from the switch"
please let me know if you are able to test.
if the HA works when unplugging ethernet, i guess you are hitting
hope it helps.
04-01-2013 10:46 PM
Thank you, Yahya Jaber!
It really seems to be this BUG
I guess, some sort of workaround can be not saving config just befor rebooting...
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