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Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
New Member

same interface for the multiple context

Hi All,

     Could I use same interface for the multiple context, without doing subinterfaces cause my outside for all the context is same. Thanks in advance.

Regards,

Abhijit Kasarekar

3 REPLIES
Cisco Employee

Re: same interface for the multiple context

Hello,

You can. However, the addresses you use in each context need to be different. In that way, when the packet returns to the firewall, the firewall can distinguish them to appropriate context. If you want to use same IP address as well, you might want to use different MAC addresses in each context.

http://www9.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00808d2b63.shtml#mul

The document above explains this scenario.

Hope this helps.

Regards,

NT

New Member

Re: same interface for the multiple context

Hi NT,

     Thanks for the input, but as my outside ip as well as the interface are same for all the context. Is there any way to do this ?

Regards,

Abhijit Kasarekar

Cisco Employee

Re: same interface for the multiple context

Sharing the outside ip is not supported, it is a mis-config.

I hope it helps.

PK

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