02-05-2020 11:55 AM
I have an VLAN application where I need to find a creative solution. Suppose you had 4 devices connected to one managed switch and each device was on its own VLAN. Three of the devices were active on their VLANs and the forth device, on its own VLAN, was a standby or redundant device for any of the others, should a device on VLAN1, 2, or 3 fail. Can I use dynamic VLANs or programmatically change, on the fly, the VLAN port assignments on the managed switch to connect the device on VLAN4 to the ports that were occupied by the failed device on VLAN1, 2, or 3? Alternatively, is there another way to accomplish this device swap through switch configuration or programming when the replacement device exists on a different VLAN? Note that, in this application, due to other constraints, I can't multicast across VLANs without causing issues.
02-05-2020 08:16 PM
02-06-2020 12:32 PM
Thanks for your reply. Yes, you understood my question correctly. I thought that would be the case for the EEM scripting. As far as multiple hosts crashing simultaneously, there are multiple use cases that we need to work out. 1) One where all failed hosts are on the same VLAN and 2) One where there are multiple failed devices on multiple VLANs. We would create a hierarchical evaluation method in our application control software to prioritize the failures. This should be fairly easy. We believe, however, somewhat unlikely that devices would simultaneously fail in this manner and we are relatively confident that we can create prioritization method between multiple "standby" hosts. I am assuming that the EEM scripting is similar but, perhaps, not exactly the same between different CISCO managed switch models. Is this correct?
02-06-2020 07:00 PM
02-07-2020 06:34 AM
02-07-2020 06:59 AM
02-08-2020 08:34 PM
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide