OSPF reference bandwidth and ASA firewalls

Unanswered Question
Dec 2nd, 2008
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Hello all,

I'm looking to set the reference bandwidth on all my OSPF devices to account for 100gb links by using the router config command

auto-cost reference-bandwidth 100000.

Unfortunately, the ASAs in my network don't appear to support this command. I don't think it will cause them an issue but can anyone offer guidance on how devices that don't support a reference-bandwidth setting (such as the ASA) may interact with devices that do? I have yet to find any relevant info.

Thanks in advance,


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Overall Rating: 3 (1 ratings)
satish_zanjurne Tue, 12/02/2008 - 11:23
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You can make good use of "ospf cost xxx" interface configuration command as alternative.

HTH...rate if helpful..

MATTHEW BECK Tue, 12/02/2008 - 11:36
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Yeah, I know I can set the interface cost with the ASA and I probably will, but I'm looking for info on what a best practice might be. Everything I read says all OSPF routers should have the same reference bandwidth but doesn't explain what may happen if a device doesn't support it.

Thanks for the comment and take care!


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