topic same interface for the multiple context in Network Security

same interface for the multiple context

Abhijit Kasarekar — Mon, 11 Mar 2019 18:11:52 GMT

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

Re: same interface for the multiple context

Nagaraja Thanthry — Thu, 15 Jul 2010 05:07:59 GMT

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,

Re: same interface for the multiple context

Abhijit Kasarekar — Fri, 16 Jul 2010 09:18:52 GMT

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

Re: same interface for the multiple context

Panos Kampanakis — Fri, 16 Jul 2010 13:50:06 GMT

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

I hope it helps.