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Cisco ASA OSPF Routing

Hi All,

 

I'm looking to connect a Cisco ASA 5525 firewall that will provide primary internet access to our core network. I want the ASA to learn routes from our core and advertise a default route by OSPF.

 

I'm happy with the basic configuration here but I'm wondering if there is any advatange to have the ASA sitting in a non-backbone area instead of area 0. Are there any best practises with this scenario or is connecting the ASA to area 0 perfectly acceptable?


Thanks,

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions

Hi Will, I Suggest you to

Hi Will,

 

I Suggest you to keep your ASA in Area 0, instead of non-backbone area.

 

I assume your asa will be having one end connected with LAN/Core LAN and other end with the public segment right.....

Then you can have the basic configuration set on ASA, as simple as possible...

 

router ospf 1
 router-id 1.1.1.1.
 network 1.1.1.0 255.255.255.0 area 0
 timers spf 1 10
 log-adj-changes
!

 

You will be running the OSPF between your edge router and asa....

 

Please correct me if my understanding is wrong.

 

Regards

Karthik

2 REPLIES

Hi Will, I Suggest you to

Hi Will,

 

I Suggest you to keep your ASA in Area 0, instead of non-backbone area.

 

I assume your asa will be having one end connected with LAN/Core LAN and other end with the public segment right.....

Then you can have the basic configuration set on ASA, as simple as possible...

 

router ospf 1
 router-id 1.1.1.1.
 network 1.1.1.0 255.255.255.0 area 0
 timers spf 1 10
 log-adj-changes
!

 

You will be running the OSPF between your edge router and asa....

 

Please correct me if my understanding is wrong.

 

Regards

Karthik

New Member

Thanks Karthik.

Thanks Karthik.

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