Forum Discussion
NimbostratusSelf ip vs floating ip
Was just trying to understand difference between self n floating IP address as in our environment we have 2 6900 f5 in active active pair And we have both self n floating ip configured for each Vlan Please advice thanks
9 Replies
Thomas_GobetHi,
Self IP are used for each device. Each BIG-IP has a self-IP in a VLAN which is the IP defined on the interface.
Floating IP are for a cluster. They are VIPs, and this is the IP shared by your cluster members.
Chung_Do_205917Why do we need two IP for this task? Is it possible to just use the Floating IP for each device and for Fail over function? thanks.
Thomas_Gobet_91Cirrostratus
Hi,
Self IP are used for each device. Each BIG-IP has a self-IP in a VLAN which is the IP defined on the interface.
Floating IP are for a cluster. They are VIPs, and this is the IP shared by your cluster members.
- Chung_Do_205917Why do we need two IP for this task? Is it possible to just use the Floating IP for each device and for Fail over function? thanks.
amit_128525Thanks for reply Thomas What is the use of floating ip so we have to define same ip on both f5 in cluster and do we need to define floating ip for each Vlan or each vs Thanks
- nitass
Employee
floating selfip is like hsrp virtual ip. it will float to active unit when failover (i.e. it is always active on active unit).
floating selfip is part of configuration synchronization, so you only define it once and run config-sync.
PragathishakartFloating IP will act as a HSRP between two units (they are configured either as active/active or active/standby). It is for High availabilty and it needs to be defined per VLAN basis.
James_124570I have a question: when adding floating IP addresses, is there downtime when updating the config and sync'ing?
- Root44_196087It should not be a problem because it is not compulsory thing to add, but when we will add it, it will not affect any application and will sit there and act when one of the device fails. @f5 expert- please correct me if I am wrong.
