Forum Discussion
Luca_55898
Nimbostratus
Jul 27, 2012VLAN and self IP sync between HA
I have a HA pair of LTMs that gets virtual servers dynamically configured at any time via API.
When this happens, the VLANs and self IPs are not synced to the standby LTM (why it doesn't sync the VLANs is beyond me)
So I need a way to script it.... In what files are the vlans and self IP configuration stored in? I should be able to create script pretty easily, but can't find the correct files.
Any other suggestions?
Cheers
- Hamish
Cirrocumulus
Vlans aren't part of the shared config, so they wont sync. You need to create them on both ha members. Same with self ips. Floating ones will sync though. - Techgeeeg
Nimbostratus
Hi Luca, - Luca_55898
Nimbostratus
Yea i understand this, but if the VLANs don't sync and you forget to configure them, and a failover occurs, traffic will fail. - Hamish
Cirrocumulus
One reason that sync may not be a good idea, is that the vlan info may be different on the two devices... The VLAN id for example doesn't need to be the same... It may be a bridged architecture where the vlanid is 10 on one device and 20 on the second and there's a bridge between them. - Laudec_55181
Altostratus
Hamish is correct. The network configuration is unique to each device. Think of an active-active configuration. Everything that is stored in the bigip_base.conf file is not sync between the devices. VLANs, Self-IP. Management IP, Trunks, etc. - Luca_55898
Nimbostratus
So does anyone have any ideas of a easy way to sync the VLANs? - rfc19
Nimbostratus
You could use iControl to update each device individually through its mgmt IP
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