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Occasional Contributor II

publisher virtual IP on different subnet with physical IP

Hi aruba master
 
based on the clustering technotes, we can configure the publisher on separate subnet.
 
can we configure vip fir this case?

 
thanks
 
Guru Elite

Re: publisher virtual IP on different subnet with physical IP

The virtual IP needs to be in the same subnet. Why are you using public IPs?

Tim Cappalli | Aruba Security
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480
Occasional Contributor II

Re: publisher virtual IP on different subnet with physical IP

Hi tim

So for publisher with l3 separated, we can not configure virtual ip? What is the ha scheme in vip ?

Guru Elite

Re: publisher virtual IP on different subnet with physical IP

The virtual IP requires L2 connectivity. It’s CARP.

Tim Cappalli | Aruba Security
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480
Guru Elite

Re: publisher virtual IP on different subnet with physical IP

Correct. You’d need to use a load balancer if there is L3 separation.

Tim Cappalli | Aruba Security
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480

Re: publisher virtual IP on different subnet with physical IP

The two common use cases for the VIP are:
- Captive Portal redundancy (You point the DNS entry to the VIP and in case
one of the nodes fails your CP will still be available)
- TACACs/RADIUS for switches that don't support two entries for
TACACs/RADIUS servers or dont have a mechanism to determine if the
TACACs/RADIUS server is unavailable (This is not very common)
Thank you

Victor Fabian
Lead Mobility Architect @WEI
AMFX | ACMX | ACDX | ACCX | CWAP | CWDP | CWNA
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