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New Member

wireless switchover

                   I have a 5508 WLC with me which is operating in HA mode. Due to some unknown reasons , the primary failed and secondary took over. The cabling seems fine. But now the secondary is acting as a primary and primary is now "hot Standy mode".

I want to make my primary back to primary or active state. But I am concerned since it refuses SSH connection to all other IP except primary IP (e.g. Primary IP - redudancy mgmt, secondary IP and secondary IP redundancy mmnt), i dnt want to lose the connection to sole WLC since I am at remote location.

Wat is the safest option?

I was thinking to physically reboot the primary(now standy) WLC so that we dont loose connection to the secondary(now primary)

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

wireless switchover

That is where I am confused. It refuses SSH / HTML to all other IP but in the output it shows peer state as Standby hot

If you can't SSH/HTML into the WLC, then physically go there and power down the WLC and power it back up.

20 REPLIES
Hall of Fame Super Gold

wireless switchover

But now the secondary is acting as a primary and primary is now "hot Standy mode".

This is normal.  You do not want primary to "pre-empt".

If you want to switchover, then issue the command "red force" and the secondary will reboot and hand-over the control back to the primary.

New Member

wireless switchover

Yes I am aware we dont have a preempt kind of scenario in HA mode in WLC

I am concerned that since i would force a switchover could i risk losing a connection to the WLC and be left with no other WLC

Please check below the output

Redundancy Mode = SSO ENABLED

     Local State = ACTIVE

      Peer State = STANDBY HOT

            Unit = Secondary - HA SKU (Inherited AP License Count = 100)

Redundancy State = SSO

Redundancy Management IP Address................. xx.xx.xx..x03

Peer Redundancy Management IP Address............ xx.xx.xx.x01

Redundancy Port IP Address....................... xx.xx.xx.x03

Peer Redundancy Port IP Address.................. xx.xx.xx.x01

Peer Service Port IP Address..................... 0.0.0.0

Switchover History[1]:

Previous Active = xx.xx.x.x01, Current Active = xx.xx.x.x03

Switchover Reason = Active controller failed, Switchover Time = Aug 1 2013

How do i understand from this that the primary is back up and working?

Hall of Fame Super Silver

wireless switchover

If you are consoled into the secondary and that is the output, then that WLC is the active one.

Redundancy Mode = SSO ENABLED

      Local State = ACTIVE

      Peer State = STANDBY HOT

      Unit = Secondary - HA SKU (Inherited AP License Count = 100)

      Redundancy State = SSO

Thanks,


Scott

Help out other by using the rating system and marking answered questions as "Answered"

-Scott
*** Please rate helpful posts ***
Hall of Fame Super Silver

wireless switchover

Like Leo mentioned, you need to issue: redundancy force-switchover on the Primary to force a switchover.


Thanks,

Scott

Help out other by using the rating system and marking answered questions as "Answered"

-Scott
*** Please rate helpful posts ***

wireless switchover

To initiate a manual switchover, use the redundancy force-switchover command.

Hall of Fame Super Silver

wireless switchover

Abhishek,

Leo and I already mentioned this command.... are you not reading the other posts?

Thanks,

Scott

Help out other by using the rating system and marking answered questions as "Answered"

-Scott
*** Please rate helpful posts ***
New Member

wireless switchover

I am aware to issue a switch over to primary we need to issue redundancy force-switchover.

But my concern here is, it refuses SSH connection to all other IP except primary IP.

Like primariy IP - redudancy management

secondary IP & secondary IP - redundancy mgmt

I dnt want to issue a switchover to know that finally i dnt have my primary working and i m left with no WLC.

Since this site supports business critical applications , i need a safest way around.

that why in my question i posted..

do i initiate a physicaly reboot of primary, see if i can SSH into it and then redundancy forc-switchover on HA-WLC(which is now acting as primary) to transfer th status back to primary.

Please assist in case you have other options

Hall of Fame Super Gold

wireless switchover

But my concern here is, it refuses SSH connection to all other IP except primary IP.

Did you enable SSH?

I dnt want to issue a switchover to know that finally i dnt have my primary working and i m left with no WLC.

I don't understand what you are trying to do.  First, you said you want to make your primary back to active.  Now you are saying that your PRIMARY WLC is NOT WORKING.

Can you elaborate what you are trying to do because I'm getting confused.

New Member

wireless switchover

Yes I have enabled SSH.

I had my primary working and secondary working prfectly fine in HA mode.

In the redudancy summary, i once saw the primary controller failed and it switchd over to secondary.

I asked the onsite engr to check the cable connectivity and everything seemed fine.

But now I have my HA WLC working as primary with the status as shown above.

But I cant SSH into any other IP except the main IP Address.

I want my primary WLC to be back to be primary and HA-WLC(now acting as primary) to be standby mode.

Hope this clarifies.

I want a safest option to do so. to bring back my primary up and then make it primary?

do i physically reboot the primary?

Hall of Fame Super Gold

Re: wireless switchover

I want a safest option to do so. to bring back my primary up and then make it primary?

do i physically reboot the primary?

There are two ways of doing this.

The easiest way is to enter the command "red force" and this command gracefully switches over control to the primary WLC.  The second method is to reboot the HOT unit.

New Member

wireless switchover

but since it refuses SSH connection to primary will the force switchover work?

Hall of Fame Super Gold

Re: wireless switchover

but since it refuses SSH connection to primary will the force switchover work?

Can you HTML in?  If you can, reload the WLC.

Refuses SSH?  Are you trying to access the Redundancy Management IP address?

New Member

wireless switchover

i can ssh or html only into the primary Ip address.

Apart from i cannot ssh or html into secondary IP or secondary/primary Redundancy Management IP address

Hall of Fame Super Gold

Re: wireless switchover

i can ssh or html only into the primary Ip address.

Apart from i cannot ssh or html into secondary IP or secondary/primary Redundancy Management IP address

Ok, now I really am getting confused.  The statement above means you CAN SSH/HTML to your PRIMARY WLC.

Redundancy Mode = SSO ENABLED

Local State = ACTIVE

Peer State = STANDBY HOT

Unit = Secondary - HA SKU (Inherited AP License Count = 100)

Redundancy State = SSO

This output you've posted (above) is telling me you've remote into your SECONDARY WLC.

So can you please elaborate what is going on???? 

New Member

wireless switchover

This is really getting hilarious

I have my primary IP as xx.xx.xx.100

Primary Redudancy mgmt Ip as xx.xx.xx.101

Secondary IP as xx.xx.xx.102

Secondary red mgmt Ip as xx.xx.xx.103

It was configured in HA. so now i can only access .100 IP and no other IP

Primary failed and it is ruuning on HA-WLC

I wanna bring up my primary and make it back to primary

Hall of Fame Super Gold

wireless switchover

I wanna bring up my primary and make it back to primary

Ok, if your primary is now back up, reboot your secondary.

New Member

wireless switchover

That is where I am confused. It refuses SSH / HTML to all other IP but in the output it shows peer state as Standby hot

So i am not sure if i got my primary working

Redundancy Mode = SSO ENABLED

Local State = ACTIVE

Peer State = STANDBY HOT

Unit = Secondary - HA SKU (Inherited AP License Count = 100)

Redundancy State = SSO

Hall of Fame Super Gold

wireless switchover

That is where I am confused. It refuses SSH / HTML to all other IP but in the output it shows peer state as Standby hot

If you can't SSH/HTML into the WLC, then physically go there and power down the WLC and power it back up.

New Member

wireless switchover

Thanks a lot

New Member

wireless switchover

Hi

I issued a manual reboot. The primary WLC is working and HA-WLC is standby mode correctly.

However, now i am not able to SSH into the primary IP adddress but i can login via GUI

I can telnet into it but not SSH. The SSH to redudancy managment IP of HA-WLC is working

but i am not able to SSH into primary IP address nor into primary redudancy IP address.

I tried to disable and then re-enable via GUI but it is not working

is there anything which needs to done?

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