Cisco Firewall :: ASA 5505 ISP Failover?
Feb 17, 2013
So we currently have a T1 connection at our location. We were looking to add a high speed cable internet and add an ASA 5505 with Security plus license to do failover between the two. I have found a few examples on how this would work but curious about a couple things.
We would want the Cable to be the primary, T1 as a backup.Currently the IAD that handles our T1 does dhcp, dns, and NAT.. Who/what would handle these items with the setup above?
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Feb 19, 2012
I have a Cisco ASA 5505 in our office. We are currently using Interface 0 for outside and 1 for inside. We only have 1 Vlan in our environment. We have two three switches behind the firewall. Today the uplink to Interface 1, to the firewall, on the switch went bad. I want to setup a second inside interface on the firewall and configure it as failover incase this happens again. I want to attach it to the other switch. Can I do this? If so, what do I need to do? would it only be a passive/standby interface?
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Oct 9, 2011
I have a ASA 5505 which is connected to a remote site which also has a ASA 5505 over a L2L VPN tunel. One of the sites has a WAN failover configured with two ISP which is working successfully.
But, when the WAN connection fails over to the backup connection the VPN link breaks as the peer site IP address has changed and the VPN can not establish a connection.
Would it be possible to configure a VPN failover so that when the connection failovers so will the VPN tunnel?
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Jun 20, 2011
There are 2x Cisco ASA 5505 in an active/standby failover config. The primary asa 5505 has been reset and the secondary is now running as active. I would like to reintroduce the primary again but need to know how to do this.
Ideally I would like to remove the failover config and start from scratch. Do I just need to enter the following to disable failover on the active secondary box?
no failover
no failover lan unit secondary
no failover lan interface failover Vlan999
no failover interface ip failover 192.168.254.1 255.255.255.252 standby 192.168.254.2
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Jul 25, 2011
I have a question regarding failover monitoring on the ASA5505 in an active/standby configuration.
I understand that on the 5505 you create VLAN interfaces and then assign the VLANs to the 5505 switchports. With failover configured on the 5505, the VLAN interface names are monitored. For example, VLAN 100 interface named Inside is assigned to ethernet0/1, switchport mode access. When issuing a show failover command the output will show the monitor status of interface Inside..
Does failover monitor the VLAN virtual interface only? Does failover also monitor the link status of the ethernet0/1 switchport?
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Dec 14, 2011
I am trying to configure two ASA-5505 as a failover pair. Software 8.2.5 and ASDM 6.4.5.206 Using the wizard i get to step3 .. then nothing happens. Trying direct in asdm but the only interface i can choose is "--None Unnamed-"
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Dec 5, 2011
We have two sites connected by a gigaman line. Routing between the two sites is done with a couple of HP routers. We also have two separate Internet connections, one at each site, through different providers. The border firewall at one site is a Cisco 5505 and at the other site it is a Cisco 5510. If the gigaman line goes down, we would like to fail over to a site-to-site VPN. Any clue how to set this up? We can set up the site-to-site VPN. how to make it serve as a failover. Another question is whether the VPN will cause confusion when the gigaman is operational.
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May 16, 2011
I need to configure one interface in failover because the client has 2 ISP.[CODE]
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Mar 26, 2012
I have two sites that each have asa 5505's and each have dual ISP's. Currently I'm using sla monitor to failover to the secondary line when there is a detected outage. After this sla failover occurs which seems to be instant, secondary ISP re-establishes the VPN. This process takes about 30 seconds. My thought is that the side which is healthy does not detect the outage due to a preset amount of timeouts and thats where this 30 second delay comes in to re-negotiate the VPN tunnel. can I create a smaller window of time to heartbeat between the two so that the VPN outagage is detected in around 5-10
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Apr 11, 2013
I’m working with a customer who has upgraded from a Sonicwall w/ PCMCIA card slot to a Cisco ASA 5505. They were using this slot with a Verizon card as an ISP failover. Obviously the ASA does not have a PCMCIA slot to reuse this aircard. However, I was wondering if there is another solution to use the existing aricard with the ASA.
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Feb 17, 2013
I'm looking for automating a couple failover scenarios. Both VPN redundancy and black hole internet traffic redundancy.I currently use the more reliable T1 connection for the VPN connection and the DSL for internet traffic.My current configuration is working but requires a manual update to get the VPN or black hole back up and operational when either link fails.
[code]....
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Nov 10, 2011
I got PIX 525 with failover. Due to power issue one Unit was offline for a while. During this time couple of changes was done on the Firewall.
Which Unit becomes active when I plug the Firewall unit which was offline for a while now. Each Unit has 4 Ethernet Connection
E 0/0 - connects ISP Router
E 0/1 - connects to Lan switch
E 1/0 - connects to DMZ port
E 2/0 - connects to failover unit PIX
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Jun 20, 2011
Currently we have one ISP1 and all traffic goes to this way. Suppose our isp1 goes down, our outside user cant get the server. All servers are nated to this ISP1.We planned to purchase a another ISP2. Shall we Configure same inside server to map this ISP2? so that one primary ISP1 goes down it will take place the outside trafficISP2.
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Nov 23, 2011
How to configure ASA failover for 8.4.
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May 23, 2011
a customer have 2 pix 525 with ver 7.0.1 in a failover configuration with serial cable and 2 sc fiber interface and 2 fastethernet 1 used for failover. the strange behaviour is that when i try to do traffic from inside to dmz or dmz to inside the maximum transfer is 862Kb/s to 1MB/s not more.... i don't understand what's happened. the show mem and show cpu are normal 7% mem used and 1-2% cpu used. attached you will find the configuration.
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Jul 19, 2011
Is it possible to setup 2 x Cisco ASA 5520 that are in an Active/Standby failover using sla monitoring?
For example ASA1 outside interface connects to an upstream switch and you setup sla monitor with icmp echo to ping that switch. The switch goes down and you need the other ASA2 to become the Active ASA. Can the sla monitor be automatically integrated with the failover commands for this to happen?
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Sep 24, 2012
I have a pair of ASA 5585 configured with 2 contexts, C1 & C2, C1 is active on ASA-1 & C2 is active on ASA-2 i did failover test, ping was initiated to host residing behind ASA-1 in context C1 i powered of ASA-1 then both context became active on ASA-2, however during this failover.i saw 4 ping packets drop..
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May 31, 2011
Configured ASA 5510 ISP failover and working fine.My ASA as configured as DHCP server also. So its serves IP addressing details including mask,default-gateway, DNS server IPs.Here my issue is whenever my ISP failover occurs my ASA sends previous ISP DNS server IPs to my inside clients.
Here i like to configure my ASA to serve IP addresses dynamically.Or is there any global DNS IP addresses which will work for all ISPs?
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Aug 3, 2011
I've seen you can configure stateful failover between two routers running ip inspect classic firewall: url...Can the same be done yet for zone-firewall? I cannot find any documentation on it.
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Sep 6, 2011
When we had 8.2.2, we bought a Mobile license to make the iPads running AnyConnect happy. I applied it, but since we'd only purchased one license, it broke failover. 8.4 lets you share tracking licenses, and since we were planning on the upgrade to 8.4.x anyway, I figured no big deal, I'll get that straightened out when I do the upgrade.
Did the upgrade this weekend, and I still can't get things happy, the boxes don't see one-another:
Here's a show failover on the primary:
Failover OnFailover unit PrimaryFailover LAN Interface: failover GigabitEthernet0/3 (up)Unit Poll frequency 1 seconds, holdtime 15 seconds Interface Poll frequency 5 seconds, holdtime 25 seconds Interface Policy 1Monitored Interfaces 6 of 160
[Code].....
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Mar 27, 2011
I have 2 PIX 525, which one of them, step and active failover mode the other PIX 525, leaving this off, do not know what happened may have been a power outage, but in any case I can turn it back on? And the other question I have is if I can import a configuration that I have saved on my computer. i have the PIX device manager.
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Sep 27, 2011
I got a problem with a cisco asa 5580 like two days ago and the device stop working (there was a mainteinance window and after that the device didn't work). Now we receive the RMA and we are trying to configure the failover so the new device get the configuration form the one that is working.
But this is the message that I gettin:
Failover message decryption failure. Please make sure both units have the same failover shared key and crypto license or system is not out of memory
We already changed the shared key and crypto license but the failover is still down, what are the features that the cisco need to activate to enable the failover?
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Nov 28, 2011
Can I run Cisco ASA failover with dual ISP run active/standby configuration and SLA monitor to monitor the primary ISP gateway and failover to the secondary gateway but not failover to the failover firewall unless an actual event occurred that required a ASA failover?
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Jun 5, 2011
I have this firewall working as active/standby. Everything seemed to be ok, but we noticed that confirgurations are not being replicated by saving configuration either copy run start or write. The workaround here is write standby command. Below the configs and stats, plus the show version, which is the same in both equipments:
Header 1
failover
failover lan unit primary
[Code].....
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Apr 4, 2012
I have an outside 7206 router that is configured with BGP. Behind that I have an ASA 5520 with a failover. Everytime my primary ISP goes down I have to failover the ASA to restablish a connection to the secondary ISP. When the primary comes back on line I have to fail it over again. I have had Cisco TAC look at the ASA and they didn't see anything misconfigured on the ASA. Doesn't seem to be any problems with the router config either.
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Aug 27, 2008
Is there a way to trigger stateful (or stateless) failover on ASA 55xx (8.0.3) when there's a failure on the IPS unit? I understand the fail open/fail close and its application on a single firewall, but the better solution for an IPS failure in a redundant pair would seem to be a stateful failover to the other ASA, and I don't see that as a documented feature.
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Apr 17, 2011
I am having ASA 5520 with active/standby configured. Around 2 days ago, the ASA stopped responding & all of my websites stopped working. when i checked the failover status it said that failover is off. I had to manually turn the failover to start my traffic flow.During this time my secondary ASA was not responding. After some time, the primary stopped responding & secondary became active......to solve this i had to make the secondary unit as failover unit primary & the primary unit as failover unit secondary. i did get a log on ASA :-
“(Primary) Disabling Failover” with error message no.105001 which states the below:-
Error Message %PIX|ASA-1-105001: (Primary) Disabling failover.
Explanation In version 7.x and later, this message may indicate the following: failover has been automatically disabled because of a mode mismatch (single or multiple), a license mismatch (encryption or context), or a hardware difference (one unit has an IPS SSM installed, and its peer has a CSC SSM installed).(Primary) can also be listed as (Secondary) for the secondary unit.
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Oct 16, 2012
I have two ASA 5510's that I want to setup in a Active/Standby configuration. My only question is on how to connect the inside ports to my LAN. I have 5 Catalyst 3750's stacked together that connect to the ASA's. Should I run the inside interface on ASA1 to a port on switch 1. Then run the inside interface on ASA2 to a port on switch2? And make sure both those ports are in the same VLAN? But, then when failover occured, how to I automatically make it clear the arp cache so the traffic starts flowing out of the right port?
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May 9, 2012
Trying to set up a stateful failover with two. asa5510
Here is what I have so far, tell me if this looks right. The ip address are set to 0.0.0.0 only for this discussion.
Config Primary Firewall:
config t
interface management 0/0 ip address 0.0.0.0 255.255.255.252 standby 0.0.0.0
interface eth 0/0
[Code].....
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Nov 24, 2011
I have 2 ASA5520's in failover pair.After failing over I cannot run ADSM on the secondary (now active device), I get "unable to launch device manager from [primary address]"
I can ASDM to the primary device (now marked as "standby ready") on the failover address. I can SSH to it also.I CANNOT ASDM to the secondary device (now marked as "active") on the primary address. I CAN SSH to it.
When I run "sh asdm image" I get valid output (asdm image disk0:/asdm-645.bin) on both.However when I run "sh ver" on each it appears ASDM is not running on the secondary device :
Cisco Adaptive Security Appliance Software Version xxxx [only]
Compared with :
Cisco Adaptive Security Appliance Software Version xxxx
Device Manager Version 6.4(5)
It appears as though ASDM is only running on the primary device (regardless of the fact it is now in standby mode). Is this normal?
I am having to run in a failover condition due to a intermittent hardware fault on the primary unit but require access to the ASDM for monitoring/diag purposes during this condition.
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Nov 25, 2012
I have a customer with two ASA 5510s. All four ports are used by the following interfaces: inside, outside, dmz, and failover. This customer is looking at getting redundant internet connections, but we don't have any ports to the redundant connection. What I'd like to know is it possible to configure sub interfaces on one of the currently occupied ports (I'm thinking inside) and use one for inside and one for failover. This way I could have the other port free for the redundant internet connection.
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Jan 21, 2013
I have two switches and two ASA in active/standby as connected below. These devices are running OSPF 128 in one area (Area 0).I'm pinging from both laptops to each other both ways. The ASA has the latest "8.6.1-5" image. I've configured the firewall failover polltime to 1s with holdtime of 4s. Pings both ways OK.
<LAPTOP> IP:10.112.132.10/24
| [ACCESS PORT VLAN10]
/ <SWITCH> [SVI VLAN10: IP:10.112.132.1/24]
/ [SVI VLAN20: IP:10.113.128.11/28]
.12 / [ACCESS PORT VLAN20] .13
[code]....
I fail the primary firewall (ASA-ACTIVE). I get a 4 seconds ping loss which is expected (holdtime) however after 10 seconds of pings I get another outage which last anywhere between 5 and 15 seconds. I've done a fair amount of debugging and I did notice that the second outage occurs with the OSPF neighbor goes from "loading" to "full". This doesn't make any sense because the routing table is fully populated when going to “full”.
When perfoming a manual fail back (type failover active on ASA-ACTIVE), pings goes on for approximately 10seconds and then an outage between 5 to 15 seconds. Agsin this outage occurs when OSPF neighbor goes from "loading" to "full".I've tried debugging on the switches and found nothing.
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Sep 27, 2012
Cisco still doesn't provide failover (active/standby) between two different types of ASA, right?
[URL]
"The two units in a failover configuration must have the same hardware configuration. They must be the same model, have the same number and types of interfaces, and the same amount of RAM"
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