Cisco ASA 5525-X Add additional IP address space to outside interface

Posted on 2014-08-07
Last Modified: 2014-08-13
I have a Cisco ASA 5525-X running 8.6(1)2.

We have utilized all of the IP address space that our ISP initially provided to us. The ISP has assigned an additional non-contiguous block of addresses to us.

The ASA doesn't support secondary addresses on interfaces. What other options do I have?

Break the outside interface into sub-interfaces and trunk with dot1q. How would I handle routing with 2 (or more) external interfaces (which to use as default)?

Set up a second physical outside interface. Again, how to handle routing with 2 (or more external interfaces?

Other ideas?
Question by:Robert Briley
    1 Comment
    LVL 28

    Accepted Solution

    you don't put it on as a secondary.

    as long as your provider routes it to you and you configure either the static nat entries or the nat pool, it will work

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    How your wiki can always stay up-to-date

    Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
    - Increase transparency
    - Onboard new hires faster
    - Access from mobile/offline

    There are some basic methods for preventing attacks on, hacking of and unauthorized access to a network -- maybe not completely, but up to a certain level. Start with a well-reputed firewall and unified threat management (UTM) system -- a gateway…
    Hi All,  Recently I have installed and configured a Sonicwall NS220 in the network as a firewall and Internet access gateway. All was working fine until users started reporting that they cannot use the Cisco VPN client to connect to the customer'…
    Hi everyone! This is Experts Exchange customer support.  This quick video will show you how to change your primary email address.  If you have any questions, then please Write a Comment below!
    In this sixth video of the Xpdf series, we discuss and demonstrate the PDFtoPNG utility, which converts a multi-page PDF file to separate color, grayscale, or monochrome PNG files, creating one PNG file for each page in the PDF. It does this via a c…

    779 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now