Duplicate IP - how?

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Frank M

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Sep 21, 2016, 12:00:14 PM9/21/16
to NetBox
Hi!

I remember a discussion about this, but can't seem to find it. How do I assign the same IP twice?
For instance, my L3 switch has two management cards (failover), so it has two management interfaces, and they both have the same IP.
Or: Virtual Router(s) - VRRP (fsrp, etc.) Two different routers/L3 switches, but they both have the same IP in addition to their individual IP.

Thanks!

    Frank

Jeremy Stretch

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Sep 21, 2016, 2:47:29 PM9/21/16
to Frank M, NetBox
I don't know that there's a great solution to this, but I would create a duplicate IP address and assign it to the second interface. It's a bit messy when looking at the IP address list, but probably the most prudent way to best represent the real world (wherein we do in fact have two duplicate IP addresses in use). When editing the device, you can select which interface to use for the primary IP, which shouldn't make a difference.

Jeremy

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Carlos Lozano

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Oct 7, 2016, 7:51:02 AM10/7/16
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Hi!

I'm using this procedure to represent HSRP services. It's twisted but I like the idea of not having duplicate ips.

Apologies for my low level of English.

Thanks Jeremy. Great Project! 

Carlos.


El miércoles, 21 de septiembre de 2016, 20:47:29 (UTC+2), Jeremy Stretch escribió:
I don't know that there's a great solution to this, but I would create a duplicate IP address and assign it to the second interface. It's a bit messy when looking at the IP address list, but probably the most prudent way to best represent the real world (wherein we do in fact have two duplicate IP addresses in use). When editing the device, you can select which interface to use for the primary IP, which shouldn't make a difference.

Jeremy
On Wed, Sep 21, 2016 at 12:00 PM, Frank M <fra...@datachambers.com> wrote:
Hi!

I remember a discussion about this, but can't seem to find it. How do I assign the same IP twice?
For instance, my L3 switch has two management cards (failover), so it has two management interfaces, and they both have the same IP.
Or: Virtual Router(s) - VRRP (fsrp, etc.) Two different routers/L3 switches, but they both have the same IP in addition to their individual IP.

Thanks!

    Frank

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