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Cisco ASA 5520 question ?

Posted on 2009-04-01
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Last Modified: 2012-05-06
Hi Experts


I have 2 cisco asa 5520, does cisco ASA 5520 have other method that could do redundancy beside HSRP ? if it does, what is the name of that method ? and how to set it up with 2 x cisco asa 5520 ? Thanks.
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Question by:SJCA
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by:JFrederick29
ID: 24040150
Actually, they don't do HSRP.  The preferred method is to use the two in a failover pair.  The primary IP address floats between the two ASA's depending on which is active.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00807dac5f.shtml
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by:SJCA
ID: 24040244
So only cisco router/switch do HSRP ?

Thanks.
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by:JFrederick29
ID: 24040301
Correct.  HSRP is an IOS feature.
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by:SJCA
ID: 24040696
Hi there,

Sorry I'm new to ASA, just last few questions:
what is single or multiple context mode ? How do we know if it's single or multiple context mode? Can we change from single to multiple context mode or vice versa from ASA ? and How do we do that ?

Thanks.

"Active/Standby Failover is available on units that run in either single or multiple context mode"
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by:JFrederick29
ID: 24040726
Multiple context mode lets you virtualize the Firewall meaning you could have contextA for customerA and contextB for customerB.  It would appear as if you "virtually" have two firewalls.  Stick with single context mode if you don't need the features multiple context mode provides as it is simpler.
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by:JFrederick29
ID: 24040811
By the way, the Firewalls come with two customer contexts and 1 admin context.  If you wanted more, you would need to buy additional licenses.

Here is a good overview of contexts:

http://www.ciscopress.com/articles/article.asp?p=426641
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by:SJCA
ID: 24052390
Hi there,

Last question, my firewall is now showing Failover: Active/Active, how do i change it to Active/Standby ? I'd like to go with the method active/standby for my pair of firewall. Thanks.
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JFrederick29 earned 500 total points
ID: 24052439
Active/Active just allows you to do both, i.e. if it showed active/standby, you aren't licensed to do active/active.  In other words, you are fine to do active/standby.
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by:SJCA
ID: 24052542
Thanks a lot.
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