ASA secondary IP address configuration

Hi Experts,

Is it possible to configure a secondary IP address in external interface? My need is... my client ISP's going to change. For the migration, so I need to connect to the external interface to the new ISP. If I can set a secondary IP address to the external interface, there is no downtime at all... I searched for this. But I did not have a valid solution. Could someone please help?

concerning

Vipin

No, unfortunately ASA interface does not support the secondary IP address configuration as in router IOS.

Unfortunately you will not be able to have zero to download when you change ISPS.

Do not forget also to change the following:

-ASA outside interface to the new ISP subnet

-Default route for external interface

-All the NAT will be replaced by the new addresses of the ISP

-All the DNS resolution as appropriate to the new address ISP

-All the ACL will be replaced by the new addresses of the ISP

-Also notified all of your change of address ISP VPN peers.

Tags: Cisco Security

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