I have a client that currently have 2 5520's with several older access points 3500/3700's. We are going to be replacing them with 3800 series/1562's access points.
We understand that we cannot upgrade the WLC at once because we would loose or have issues with the 3500's series access points if we were to take the WLC's to a higher version.
These WLC's serve thousands of users hence we want to have an smooth access point replacement. As such what would be the recommended process, oh I forgot to mention, we have new 5520's that we want to use for this purpose, meaning to host the new access points and infrastructure.
I guess what we are trying to achieve is to have the WLAN's working as usual while we replace the 3500/3700 series access points phase by phase.
Should we move all the exisiting (older) access points to the new WLC's THEN replace first the 3500's access points with the 3800's and then upgrade the WLC's to a higher code? or?
Because we could keep some access points in the older 5520's and some in the new 5520's as long as the mobility groups are the same then the devices wont have issues with roaming, etc
I will appreciate your comments on what would be the best approach thanks!
UM, 126.96.36.199 code supports both 3500 and 3700 ap's as well as 3800 and 1560's
I currently support that combination myself.
I suspect the problems you will experience will be insuffient POE to the 3800's. I had to use 2800's in some locations.
The 3800's require a full 30w at the end of the run so if it only gets 28.5 due to poe line loss it will not energize. The 2800's only need 26.1w
Thanks for your response, indeed we are aware of the poe+ requirement of the 3800's AP so i think we got that part covered, we are actually using 3850's switches to support these AP's.
Thanks for your response, although I am not sure what is the benefit of doing this?
As mentioned before my client have an existing pair of 5520's and he also has an extra pair of 5520's that he wants to replace with.
On the existing production pair of 5520's he has few hundreds 3502's and 3702's. He has also purchase few hundreds of 3802's that he will use to replace the 3502's and the 3702's.
The idea is to minize the impact on the WLAN while replacing/adding access points. One thought was to standup the new pair of 5520's to allow the new 3802's to register and configured while having the old pair of 5520s to continue working, but for example wouldnt this affect a client that is register to a 3502 in the old pair of 5520's and suddendly moves or roams to a 3802 that is register to the new pair of 5520's? Thanks