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ISA500: How do I configure a second WAN-IP-Range on the same WAN-line?

Answered Question
Sep 17th, 2014
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I have an ISA570 and my ISP has put the additional IP-Range on the same WAN-line as the existing one. How to configure this? Regards and many thanks Jens

Correct Answer by Martin Moran about 2 years 11 months ago

Hi @jens.leipziger@...,

But the ISP just incremented the mask of your range or put an additional range totally different?

In case that It has assigned a totally different subnet, you cannot configure the ISA with a "secondary" IP range.

You can do it with Cisco routers and some L3 switches with the "ip address x.x.x.x secondary" interface configuration command.

See the following link to more information about the ISA configuration:

http://www.cisco.com/c/en/us/td/docs/security/small_business_security/is...

Don't forget to rate

Rgrds,

Martin, IT Specialist

 

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Correct Answer
Martin Moran Wed, 09/17/2014 - 05:04
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Hi @jens.leipziger@...,

But the ISP just incremented the mask of your range or put an additional range totally different?

In case that It has assigned a totally different subnet, you cannot configure the ISA with a "secondary" IP range.

You can do it with Cisco routers and some L3 switches with the "ip address x.x.x.x secondary" interface configuration command.

See the following link to more information about the ISA configuration:

http://www.cisco.com/c/en/us/td/docs/security/small_business_security/is...

Don't forget to rate

Rgrds,

Martin, IT Specialist

 

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