Learn F5 Technologies, Get Answers & Share Community Solutions Join DevCentral

Filter by:
  • Solution
  • Technology
Answers

VLAN Self IP vs Floating IP

I've tried searching for some of this information but haven't really found a good answer.

From what I've found, VLAN's require an IP, but I haven't found anything saying if it can be just a floating IP, or if you have to have a static IP as well? And are you able to set multiple floating IP's? If so, what is the maximum?

Thanks!

0
Rate this Question

Answers to this Question

placeholder+image
USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

Hi Nicholas,

I don't see why you couldn't but why you need to set multiple self IP or floating IP? everything depends what you want to do.

case1 (standalone):

  • 1 static IP (all outgoing traffic pass trough this static IP)

case2 (standalone):

  • 1 static IP (This IP will be use by monitoring only)
  • 1 floating IP (all outgoing traffic pass trough this floating IP)

case3 (cluster) - Active - Standby:

  • 1 static IP per member
  • And 1 shared floation IP (Traffic group 0)

case4 (cluster) - Active - Active:

  • 1 static IP per member
  • And 1 shared floation-a IP (Traffic group 0) Priority on member 1
  • And 1 shared floation-b IP (Traffic group 1) Priority on member 2

case 5 - Multiple statique self-IP on the same VLAN with different subnet...

tell me exactly what you want to do and I can help you.

Regards

-1
Comments on this Answer
Comment made 1 month ago by youssef 4067

you can assign as much floating IP as your VLAN/subnet allows. But don't forget that you have an restriction about datagroup creation for activ activ infra.

0
Comment made 1 month ago by Nicholas 1

Does adding extra floating IP's provide any benefit? Will the F5 spread the traffic over the floating IP's in that VLAN?

0
Comment made 1 month ago by youssef 4067

the creation of several floatingIP will allow you to deploy an active active infra and thus mastered the outgoing flow by DG.

If you want to spread traffic over multiple IP you have to use snat pool. it is sometimes useful when you reach the 64000 outgoing connection..

0
placeholder+image
USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

Hi, Not sure if this answers your question, but you have to have a single non-floating IP per VLAN. If you use High Availability, you can add Floating IP's as well, and they are used as cluster IP's, much like Cisco HSRP.

0
Comments on this Answer
Comment made 1 month ago by Nicholas 1

Thank you! That does answer my question! Do you happen to know also how many floating IP's you can assign per VLAN?

0
placeholder+image
USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

A self-ip is for each individual device to communicate from in each VLAN. A floating IP "floats" to the active unit.

HERE is a good DevCentral post on the topic, and HERE is some F5 documentation on the topic!

Hope that helps! If it does please up-vote and select this answer, it would be greatly appreciated!

-Dylan

0