Cisco Firewall :: Multiple Context Active / Standby (ASA 5520)
Mar 8, 2013
I need to configure multiple context mode with active/standby failover solution.
Even after reading some Cisco documents I still can't understand if active/standby failover configuration has to be done within the admin context only or also within every single context (context-1, context-2 for example). In this case I have to allocate as failover interface a subinterface for each context (admin, context-1, context-2), right ?
Therefore a I have an other question: within the admin context, in a failover solution, do I have to allocate all interfaces I want to be moniotred, even though some will be used by context-1 only context and some others will be used by context-2 only context ?
An other question is: if active/standby failover configuration has to be done within each context, can I set regular failover within context-1 while stateful failover within context-2 ?
The last question is: can I use management interface within all 3 contexts ?
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Mar 3, 2013
I have two ASA 5520 version 8.2 in active Standay Mode. What is a good practice to setup IPS AIM ssm-20 for this setup.
Is IPS should be in Fail-Open or Fail-Close mode ?
Is Mangement ip for both IPS module should be same or diffrent. ?
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Aug 6, 2012
Is the preempt option available in active standby ASA firewall setup with single context...somewhere i have read that same is available in active-active setup or active/standby setup with multiple context.If i active the multiple context mode on product environnement with two ASA5520 in Active/Standby mode, what are the impacts on the the production?
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Mar 15, 2011
I am getting ready to setup avtice/standby failover on our ASA 5520's and have run in to an issue.I currently only have one External IP address available. My Idea was to use a private/placeholder IP address for the standby external IP Address, will this cause any issues with the failover? I know I won't be able to access the secondary from the outside, but that is not an issue.
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Oct 9, 2011
I have been asked to look at upgrading two 5520 ASA configured in a HA pair Active/Standby, from version 7.2(4) to version 8.3(1) to bring it in line with some other ASA firewalls in the organisation.
My question is can I simply upgrade straight from 7.2(4) to 8.3(1) or will I have to step the upgrade from 7.2(4) => 8.2(x) => 8.3(1)
Having read a few articles on the forums and the release notes I think I should be able to go from 7.2(4) => 8.3(1) .
The second part of my query is around the upgrade itself, having researched this a little there seems to be various views on how to go about upgrading a HA pair and I cannot find anything specific on the website.
The approach I am thinking of is simply as follows;
- upload images onto both firewalls in the HA pair
- On the standby from the CLI
clear configure boot
[Code].....
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Jun 7, 2011
We have a pair of 5510s and a pair of 5520s, each in Active/Standby mode. I'd like to upgrade the ASDM and ASA software on these, but am finding no documentation that advises on how this can be done without physical access to the devices. It so happens I am on site, but we will be deploying these throughout our network and I'd like to be able to perform this type of maintenance without travelling to each site. We utilize CSM and ASDM to manage these for the most part, but are certainly capable of configuring via CLI.
The issue may be my lack understanding of the ASA fundamentals, but I don't really get how the software can be copied to the individual ASAs of the pair so they may be reloaded and upgraded without outage. With a remote SSH connection to the pair, I'm only copying the software to the Active ASA, correct? Or is there a way to get the software to each disk individually from the single SSH connection? I'm not quite sure how to manage the Standby ASA without consoling into it... If I can indeed remotely get the software to each ASA (copying to different disks?? i.e. disk0: and disk1:?), then I also run into an issue updating the boot statement for each of them individually, though to resolve that I suppose I could just remove the old software, but that seems like bad practice before confirming the new software is ok.If there is a simpler way of deploying new code via ASDM or CSM, I'm certainly open to that.
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Nov 1, 2011
I am new to Cisco firewalls. We are moving from a different vendor to Cisco ASA 5520s.I have two ASA 5520s running ASA 8.2(5). I am managing them with ASDM 6.4(5).I am trying to setup Active/Standby using the High Availability Wizard. I have interfaces on each device setup with just an IP address and subnet mask. Primary is 10.1.70.1/24 and secondary is 10.1.70.2/24. The interfaces are connected to a switch and these interfaces are the only nodes on this switch. When I run the Wizard on the primary, configure for Active/Standby, enter the peer IP of 10.1.70.2 and I get an error message saying that the peer test failed, followed by an error saying ASDM is temporarily unable to connect to the firewall.
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Jan 30, 2012
I am trying to setup an active/standby failover with 5520's running 8.4(2) and am having problems with it not dropping connections during the failover. I am using a portchannel from the switch to each ASA and using sub-interfaces off that. I'm using the command Failover mac address Port-Channel1 “mac-address on primary Port-Channel1” “mac-address on standby Port-Channel1”.The command goes through but doing a show interface port-channel1 doesn't show a change in the mac address on the secondary unit after a failover when it becomes active.
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Mar 18, 2011
I've got an ASA which has a number of contexts. They all share the same external interface, and in the interest of saving addresses I'm wondering if the standby address for each context is really necessary. I know that in active/passive the standby address is what allows the two to communicate and monitor that particular interface, however, in active/active I don't see the point as the context is either going to be on one or the other.
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Jul 17, 2012
I have a pair of ASA 5520s operating in failover pair as active/standby, having two contexts on them. I am planning to share the load and make it active/active making first context active on the primary unit and second context active on the secondary unit. My question is if this will disrupt any connectivity thru these firewalls when I do "no failover" on the active/standby and assign the contexts to different failover groups and enable the failover back.
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Jul 1, 2012
On my production environment I have a firewall with already two contexts defined (15% of CPU used) and I want to add a new one.
This context is going to use the same interfaces as the others contexts. When I will enable the context, can I have some sort of repercussion on these two context ?
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Jan 13, 2013
I have two ASA 5510 in an Active/Active failover configuration; On the first ASA I have a license for five security contexts, on the second one I have the default two. On the pair I configured seven security contexts and everything works as expected; so far so good. Let's suppose now that the first ASA (the one with the license for 5 contexts) goes up in smoke; all the contexts migrate to the surviving firewall and life is still good. But what happens if, for some reason, I need to reboot the second ASA before the first one is repaired? My guess is that it will come up with just its own license for two contexts and that I will not be able to operate all my virtual firewalls.
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Jul 8, 2010
1) 2 x ASA 5520, running 8.2
2) Both ASA are in same outside and inside interface broadcast domains – common Ethernet on interfaces
3) Both ASA are running single context but are active/standby failovers of each other. There are no more ASA’s in the equation. Just these 2. NOTE: this is not a Active/Active failover configuration. This is simply a 1-context active/standby configuration.
4) I want to share VPN load among two devices and retain active/standby failover functionality. Can I use VPN load balancing feature?
Active/Active failover is understood to mean only two ASA running multi-contexts. Context 1 is active on ASA1 Context 2 is active on ASA2. They are sharing failover information. Active/Active does not mean two independently configured ASA devices, which do not share failover communication, but do VPN load balancing. It is clear that this latter scenario will work and that both ASA are active, but they are not in the Active/Active configuration definition. Some people are calling VPN load balancing on two unique ASA’s “active/active”, but it is not
The other confusing thing I have seen is that VPN config guide for VPN load balancing mentions configuring separate IP address pools on the VPN devices, so that clients on ASA1 do not have IP address overlap with clients on ASA2. When you configure ip address pool on active ASA1, this gets replicated to standby ASA2. In other words, you cannot have two unique IP address pools on a ASA Active/Standby cluster. I guess I could draw addresses from external DHCP server, and then do some kind of routing. Perhaps this will work?
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Sep 22, 2011
last night I started upgrading our ASA5520 active/standby cluster. Because of lack of memory, I stopped the upgrade process and will continue when the memory modules have arrived... Currently I'm running 8.0(5) on both nodes (Version: Ours 8.0(5), Mate 8.0(5))Whenever I use the "write standby" command on the active ASA, the passive ASA seems to drop it links for a short while. [code]
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Jun 1, 2011
I have an ASA5520 in location A with an ISP connection and a matching ASA5520 in location B with a separate ISP connection. We have fiber connecting the two locations and vlans passing back and forth so I will be able to configure the failover via a vlan as well as extend the ISP's to each location via vlans. The Active/Active configuration with the multiple security contexts does not seem to be an issue but how is a redundant ISP configured in this mode?We want to have context A using the ASA in location A with ISP1 as the primary and failing over to ISP 2 in locaiton B We also want to have context B using the ASA in location B with ISP 2 as the primary and failing over to ISP1 in location A Would route tracking provide the desired result? Is there a better option?
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Mar 30, 2011
I have 2 asa 5520 firewalls including and 1 AIP-SSM-10 module in each of them. the configuration is set using active/active failover and context mode.
Both of them run individualy the IPS module. The IPS is configured using inline mode and fail-open option. However when one of the module fails and the state is changing from up to init or anything else making the IPS to fail then failover is detected and ASA consider it as failover and bounce context to the other unit.
IPS soft is 6.0(4) and ASA soft is 8.0(3)
I have checked cisco doc and it is confusing to me. it says: "The AIP-SSM does not participate in stateful failover if stateful failover is configured on the ASA failover pair." but it really does participate. Running is not really an option because of production network impact matter..
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Nov 7, 2011
I am setting up a new pair of ASA 5585's in a multi-context, active/active failover design. I cannot create management SSH connection to the contexts that are assigned to failover group 2. With all the security contexts that are assigned to failover group 1 I can SSH to the inside interface IP and login without a problem. When I try to do that to the group 2 contexts there is no response from the firewall at all, PuTTY just times out.
My firewalls are running version 8.2(4). The contexts seem to be functioning normally in all other respects.
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Sep 7, 2011
How I can actively monitor the interfaces and overall status of 2 x ASA 5500s in an Active/Standby configuration?
I can setup monitoring of the interfaces on the Active member but I'm not sure how to manage the Standby member?
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Jun 12, 2011
I would like to work with two ASA's 5550 in HA (Acitve-Standby) like perimetral firewalls and also work with another ASA 5540 but like a SSL VPN Remote Access to end users.Which will be the best topology to this scenary?. Perhaps i need to put the ASA 5540 SSL VPN together with the ASA's in HA directly in a port.
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Sep 21, 2011
i have 2 ASA 5505 running 8.3(1) and ASDM 6.3(1).
the first unit is currently working, and i now wish to configure the second unit as standby. im configuring through the ASDM GUI. Started the HA Wizard, choose Active/Standby configuration and enter the IP of the peer device. checks come back all ok. On the LAN link configuration page (step 3of6) Interface is pre selected as VLAN99, I give it a logical name as iface_fail, and enter 10.0.0.1 as primary address and 10.0.0.2 as standby, subnet as 255.255.255.248, and select port Ethernet0/5
Note that if i click on the buttons next to the IP fields, i get IP addresses of remote hosts!.
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Dec 21, 2011
I have a problem with failover. On My site I have 2 Firewalls 5580. And I did this configuration on my firewall.interface GigabitEthernet3/0description LAN/STATE Failover Interfacespeed nonegotiate.
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Feb 8, 2012
I would like to ask you about ASA 5510 (Active/Standby). i have two ASA 5510 and i did configuretion failover and it is working ( Active / Standby) but my issue that when primary donw, the standby unit up to primary but the primary came back the standby unit it not switch to standby ( i mean it still up ) . if i want to primary up i type command ( failover active ) on primary unit , so i don't want use manul command i want it auto.Which command that make ASA failover when primary coma back? [code]
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Apr 18, 2012
i read that you need only one L-ASA5510-SEC-PL for setting up a Active/Standby Failover. I installed the license on the 1st ASA and tried to setup the failover via the ASDM wizard. It always fails, because the 2nd device can't have a 'base' license.So does this mean, i really need another license?
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Jun 4, 2012
I currently have a LAN-based failover setup between two 5510s. The failover link is a crossover cable. In the current setup, if I unplug the crossover cable both units become active. From what I understood from Cisco documentation, each unit should mark the failover interface as down and there shouldn't be any failover. That's exactly how I want this setup to work.
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May 11, 2011
I have just finished setting up two ASA5510s in Active/Standby Staeful failover, using the Management interface for both failover and state. Everything appears to be working well.Configurations were transferred and the "sh failover" on both accurately reports their status before and after a failing the active device.I monitored the inside IP with a continuous ping (using a Windows client) and noticed that there were usually two to three ping responses lost. Is this normal?
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Oct 21, 2012
I have two 5505 ASA. I would like to know can I make two 5505 failover redundant with active standby setup?
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Feb 6, 2012
I am looking to add the IPS module to my ASA 5510's. I am contemplating only purchasing one module and placing it in the active ASA. I am willing to accept that in a failure scenario I will loose the IPS functionality until the primary ASA is recovered. I have not had a chance to talk to my SE to see if this is even possible. Has anyone attempted a deployment such as this? Will it work and is it supported?
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Dec 5, 2011
We have 2 ASA 5505s in a data center at a remote site.
Whilst troubleshooting another issue I noticed the below. I don't know much about fail over but this would suggest that the secondary ASA is active and the primary ASA is on standby.
if the primary is "active" then how come the secondary is the active ASA? I would have thought that once the primary ASA became active this would assume the "main" role".
[Code] .....
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Jul 24, 2011
I have 2 FWSM running on 2 Cat6500 chassis, they work as a Active/Stanby group. Firewall mode is transparent. [code] HA is running well, but I can not ping the standby IP (10.98.1.248). So what could be the problem?
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Dec 20, 2012
I am in the process of adding a new ASA 5550 as a standby box to an existing ASA 5550 running on transparent mode. Both are on version ASA 8.0(4) and ASDM 6.2(1). I have set the new ASA 5550 to transparent mode. The configurations are the following for the HA: [code]My questions are the following:
1. The management ip address is different than the ip used for the failover link. Since the firewalls are on transparent mode, does the failover ip needs to be the same as the management ip address?
2. Does any other additional config is needed for HA to work for basic active/stand-by failover?
3. Which is the best method to add the second box without disrupting the active box?
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Jan 17, 2012
Can I upgrade Active/standby pair from 7.2(4) to 8.0(5)25 directly or need to upgrade to 8.0.2/4 first? Upgrade an Active/Standby Failover ConfigurationComplete these steps in order to upgrade two units in an Active/Standby failover configuration:Download the new software to both units, and specify the new image to load with the boot system command.Refer to Upgrade a Software Image and ASDM Image using CLI for more information.Reload the standby unit to boot the new image by entering the failover reload-standby command on the active unit as shown below:active#failover reload-standbyWhen the standby unit has finished reloading and is in the Standby Ready state, force the active unit to fail over to the standby unit by entering the no failover active command on the active unit.active#no failover activeNote: Use the show failover command in order to verify that the standby unit is in the Standby Ready state.Reload the former active unit (now the new standby unit) by entering the reload command:newstandby#reloadWhen the new standby unit has finished reloading and is in the Standby Ready state, return the original active unit to active status by entering the failover active command:newstandby#failover activeThis completes the process of upgrading an Active/Standby Failover pair.
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Jan 12, 2013
1. We have Two 3900 Router on the core layer which are terminated with one ISP on one Router and Secondary ISP on Second Router.
2. Can we configure my ASA 5520 with Active/Standby termenating two IPS providers one on Active ASA 5520 and Other ISP on Standby ASA 5520, so that when Active ISP fail ASA Secondary can become Active and send the Traffic throough Secandary ISP.
3. The reasion behind giveing Public IP on Firewall is to Terminate VPN on our Firewall i.e. SSL and IPSEC VPN.
Few Clarification If we can achive the above:
1. How will the DMZ Servicec nated with my Primary ISP on my Primary ASA will be routed when the Secondary ASA is acting as Active Firewall.
2. Can Web SSL and Client To Site IPSEC VPN users access service via the Secondary ISP- ASA when my Primary ASA and ISP is down.
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Apr 13, 2011
I currently have two 5540's in an Active/Standby pair. The primary unit failed on February 12th, so the secondary ASA is now the active one. My question is this - we have made a lot of changes since February 12th and I am planning on fixing this failover issue over the weekend. Will the secondary (now active) FW sync it's config to the non-active FW, or will the failed FW sync it's out-of-date config - removing any changes that we've made in the last month or so.
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