Forum Discussion
NimbostratusHA and IP's
I have two physical devices that I'm trying to create a cluster. Following F5 documentation I use the setup wizard to create the HA cluster. One document speaks of 3 different IP addresses (configsync, Failover IP address and Mirroring). For the config sync address it says it uses the self ip addess for the internal vlan, ok fine. For the Failover IP address it says to use the self ip addresses you used for vlan HA or vlan internal, of fine. For the mirroring it says it will use either the vlan HA or the self IP of vlan internal, of fine. So, following the document to create an active\standby cluster it asks for a floating IP for the internal vlan- so I gave it one and it said to put that vlan on interface 1.2 untagged, ok. Did the same for the external vlan but wouldnt let me put the vlan on interface 1.2 as instructed by the documentation since the internal was already on it, makes sense, but just following the instructions. Then it asks for a HA self IP - what do I use as this? Is this a new IP I need? Or is this one of the (config sync, failover or mirroring IPs I can use)??? Thanks.
Sometimes the documentation misses the big picture in explaining things. I wish they could explain all this in a simple overview instead of many different documents where it becomes easy to get lost.
Yep, this sounds like about all you'll need to get the setup done.
5 Replies
Cory_50405Noctilucent
HA self IP should be dedicated for device to device HA communications. Ideally, it should be some private network only available to the two BIG-IP devices.
tolinrome_13817Is the HA ip address for both devices, or each devices needs its own? Also, they do not need then any routing etc, its only the 2 devices that will communicate and use this IP?
- Cory_50405
Each device will need a self IP address. You'll also need to build a vlan for it and assign the vlan to the HA interface. But you can cable the interfaces between the HA pair directly. For example, if you wanted to use interface 1.6 for it, just configure your HA vlan untagged on interface 1.6 on both BIG-IP devices and then cable them together.
- tolinrome_13817
Ok, so just to help me understand better:
I have two vlans (external and internal)and one self IP address per vlan on each device.
Now for the clustering:
Internal network Self IP 10.10.10.20 Floating IP 10.10.10.21
External Network Self IP 172.16.50.50 FLoating IP 172.16.50.51
High Availability Self IP (this will be a new IP created and not routable???)
Anything else? Thank you!!!
- Cory_50405
Yep, this sounds like about all you'll need to get the setup done.
