topic ASA5515-X active/stand-by problems in Network Security

ASA5515-X active/stand-by problems

Daniel Leonard — Tue, 12 Mar 2019 01:51:54 GMT

Hi Experts!

I've successfully setup two ASA5515-X (both with 5515-IPS) in active/standby mode. When the primary ASA's goes offline(failover testing) the standby ASA became active. So far so good.

When I test the following situation, 70% of the time I'm running into trouble.

1. Reload/powerfail secondary ASA

2. a few seconds later, reload/powerfail primary ASA

After doing this, the secondary ASA doesn't see an "active mate" and will become the “active” ASA. The primary ASA will also became in "active" state and sees the standby ASA in "failed state"!!

When I look in the secondary (now active) ASA I can see that the failover configuration is disabled!!

no failover

failover lan unit primary

failover lan interface failover GigabitEthernet0/5

failover key *****

failover link failover GigabitEthernet0/5

failover interface ip failover 1.0.0.5 255.255.255.252 standby 1.0.0.6

When I configure the secondary ASA (console ), with the following configuration. The secondary ASA gets back online in “Standby ready” state… problem solved ........

asa# conf t

asa(config)# failover

This is an undesirable and not stable failover situation! Both of the ASA's became active and causes ip conflicts.

Within a few weeks, I need to install this devices. Hopefully you can help me with this problem.

Device overview:

ASA5515-X software: 9.1(2)

ASDM: 7.1.3

ASA5515-IPS Software version: 7.2(1)E4

ASA5515-X active/stand-by problems

Julio Carvajal — Fri, 31 May 2013 20:10:02 GMT

Hello Sr,

Certainly not expected at all,

So you reload the secondary box and when it comes up it sees itself as the active unit (even if the primary one is there acting as the active one) right ?

Can you share the

show failover history (with the relevant information after the standby unit comes back up)

Do you have logging enabled, anything interesting regarding the logs at the time of the problem ( level 1 messages )

show failover events

Regards,

Julio

Re: ASA5515-X active/stand-by problems

Daniel Leonard — Sat, 01 Jun 2013 14:28:33 GMT

Hi Julio,

Thanks!

"So you reload the secondary box and when it comes up it sees itself as the active unit (even if the primary one is there acting as the active one) right ?"

No, on that moment both of the ASA's where booting. Like I said; I reload the secondary ASA first and a few seconds later I reload the primary ASA. Then the problem arises

When I reload the secondary ASA and the primary ASA stays active, then there is no problem at all.

thanks,

Niels

Re: ASA5515-X active/stand-by problems

Julio Carvajal — Sat, 01 Jun 2013 16:09:32 GMT

Hello,

Okey, now it's a little more clear

You reboot it the ASA Secondary firewall first, so it will came up first but as soon as the other ASA booted it should detect it,

So again after both of the devices boot up can you share the commands requested before:

All of them will be need it to move forward. Also I will need the following command ( show startup-config)

If u do not want to publish your startup-config on this site u could send it privately to my cisco email address

Regards

Re: ASA5515-X active/stand-by problems

Daniel Leonard — Sun, 02 Jun 2013 18:24:21 GMT

Hi Julio,

Thank you for taking time

I just reproduced the problem to get the needed log files. I will send the configuration by mail, hopefully you can help me further with it.

To reproduce this problem I reloaded the standby ASA first, a few seconds later I reloaded the active ASA.

primary (normal active) ASA:

MS-DC-ASA02# sh failover

Failover On

Failover unit Primary

Failover LAN Interface: failover GigabitEthernet0/5 (up)

Unit Poll frequency 1 seconds, holdtime 15 seconds

Interface Poll frequency 5 seconds, holdtime 25 seconds

Interface Policy 1

Monitored Interfaces 2 of 114 maximum

Version: Ours 9.1(2), Mate 9.1(2)

Last Failover at: 19:40:20 CEDT Jun 2 2013

This host: Primary - Active

Active time: 1034 (sec)

slot 0: ASA5515 hw/sw rev (1.0/9.1(2)) status (Up Sys)

Interface outside (xx.xx.xx.xx😞 Normal (Not-Monitored)

Interface mngt-lan (172.16.251.6): Normal (Not-Monitored)

Interface internet-lan (172.16.255.65): Normal (Waiting)

Interface dmz-lan (172.16.255.97): Normal (Waiting)

Interface management (192.168.241.6): Normal (Not-Monitored)

slot 1: IPS5515 hw/sw rev (N/A/7.2(1)E4) status (Up/Up)

IPS, 7.2(1)E4, Up

Other host: Secondary - Failed

Active time: 0 (sec)

slot 0: ASA5515 hw/sw rev (1.0/9.1(2)) status (Unknown/Unknown)

Interface outside (0.0.0.0): Unknown (Not-Monitored)

Interface mngt-lan (172.16.251.7): Unknown (Not-Monitored)

Interface internet-lan (172.16.255.66): Unknown (Waiting)

Interface dmz-lan (172.16.255.98): Unknown (Waiting)

Interface management (192.168.241.7): Unknown (Not-Monitored)

slot 1: IPS5515 hw/sw rev (N/A/) status (Unknown/Unknown)

Stateful Failover Logical Update Statistics

Link : failover GigabitEthernet0/5 (up)

Stateful Obj xmit xerr rcv rerr

General 0 0 0 0

sys cmd 0 0 0 0

up time 0 0 0 0

RPC services 0 0 0 0

TCP conn 0 0 0 0

UDP conn 0 0 0 0

ARP tbl 0 0 0 0

Xlate_Timeout 0 0 0 0

IPv6 ND tbl 0 0 0 0

VPN IKEv1 SA 0 0 0 0

VPN IKEv1 P2 0 0 0 0

VPN IKEv2 SA 0 0 0 0

VPN IKEv2 P2 0 0 0 0

VPN CTCP upd 0 0 0 0

VPN SDI upd 0 0 0 0

VPN DHCP upd 0 0 0 0

SIP Session 0 0 0 0

Route Session 0 0 0 0

User-Identity 0 0 0 0

CTS SGTNAME 0 0 0 0

CTS PAC 0 0 0 0

TrustSec-SXP 0 0 0 0

IPv6 Route 0 0 0 0

Logical Update Queue Information

Cur Max Total

Recv Q: 0 0 0

Xmit Q: 0 0 0

MS-DC-ASA02# sh failover history

==========================================================================

From State To State Reason

==========================================================================

19:40:15 CEDT Jun 2 2013

Not Detected Negotiation No Error

19:40:20 CEDT Jun 2 2013

Negotiation Just Active No Active unit found

19:40:20 CEDT Jun 2 2013

Just Active Active Drain No Active unit found

19:40:20 CEDT Jun 2 2013

Active Drain Active Applying Config No Active unit found

19:40:20 CEDT Jun 2 2013

Active Applying Config Active Config Applied No Active unit found

19:40:20 CEDT Jun 2 2013

Active Config Applied Active No Active unit found

==========================================================================

MS-DC-ASA02#

Secondary (normal standby) ASA:

MS-DC-ASA02# sh failover

Failover Off (pseudo-Standby)

Failover unit Secondary

Failover LAN Interface: failover GigabitEthernet0/5 (up)

Unit Poll frequency 1 seconds, holdtime 15 seconds

Interface Poll frequency 5 seconds, holdtime 25 seconds

Interface Policy 1

Monitored Interfaces 2 of 114 maximum

MS-DC-ASA02#

MS-DC-ASA02# sh failover history

==========================================================================

From State To State Reason

==========================================================================

19:39:49 CEDT Jun 2 2013

Not Detected Negotiation No Error

19:40:20 CEDT Jun 2 2013

Negotiation Cold Standby Detected an Active mate

19:40:22 CEDT Jun 2 2013

Cold Standby Disabled HA state progression failed

==========================================================================

MS-DC-ASA02#

Below the configuration I've made on the secondary (normal standby) ASA to let it work again.

MS-DC-ASA02(config)# failover

Detected an Active mate

Beginning configuration replication from mate.

WARNING: Failover is enabled but standby IP address is not configured for this interface.

ERROR: Failed to start client services

End configuration replication from mate.

MS-DC-ASA02(config)#

MS-DC-ASA02# sh failover history

==========================================================================

From State To State Reason

==========================================================================

19:39:49 CEDT Jun 2 2013

Not Detected Negotiation No Error

19:40:20 CEDT Jun 2 2013

Negotiation Cold Standby Detected an Active mate

19:40:22 CEDT Jun 2 2013

Cold Standby Disabled HA state progression failed

20:01:06 CEDT Jun 2 2013

Disabled Negotiation Set by the config command

20:01:08 CEDT Jun 2 2013

Negotiation Cold Standby Detected an Active mate

20:01:09 CEDT Jun 2 2013

Cold Standby Sync Config Detected an Active mate

20:01:18 CEDT Jun 2 2013

Sync Config Sync File System Detected an Active mate

20:01:18 CEDT Jun 2 2013

Sync File System Bulk Sync Detected an Active mate

20:01:32 CEDT Jun 2 2013

Bulk Sync Standby Ready Detected an Active mate

==========================================================================

MS-DC-ASA02#

Thanks,

Niels

Re: ASA5515-X active/stand-by problems

Julio Carvajal — Sun, 02 Jun 2013 20:48:51 GMT

Hello,

It looks like somehow after rebooting the Standby firewall it does not maintain the "failover" command,

I can't check the configuration on my cisco account email until tomorrow (dont have access from home) so I will analize it tomorrow but interesting case man,

Glad to help on this one

Regards