Hi James,

We don't have specific guidance for this case, but the page we have for 
IdP operators moving from hosted to local solutions may give you some 
idea of the potential bumps and potholes in the road ahead:

http://www.ukfederation.org.uk/content/Documents/OAMDtoLocalIdP

As to how the various SPs handle a change on the IdP side, "it depends": 
some will need to be told specifically, some may be able to permit use 
of old and new IdPs during the changeover if you ask them, some won't 
seem to mind (or perhaps care) and some will take longer than others to 
pick up that a change has happened at all.

One good bit of news: you won't need to tell DigiMap you've changed 
entityID: it cares more about the scope. However, changing your entityID 
will mean that your eduPersonTargetedID / persistent-id values will 
change and almost all your DigiMap users will need to re-register. 
losing any saved resources in the meantime - so you may need to keep the 
old IdP running in parallel with the new one for some time.

Hoping this is useful,

Steve


On 09/09/15 16:59, Todd, James wrote:
> Hi All
>
> We're currently setting up a PingFederate IdP cluster to replace our ADFS\Shib 2.3\Novell Access Manager mish-mash of an SSO solution and my attention has turned to the UK Federation portion of things.
>
> One of the challenges I forsee is getting the new EntityID out to all the SPs our students and staff may use. There are a couple of SPs in the federation which are there specifically for us and I'll contact them of course, but for the rest (your DigiMaps, JSTOR etc) that's going to be a lot of SPs for me to contact.
>
> Anybody who has gone through an IdP migration recently: what approach have you taken to a smooth transition? Are there a known list of SPs perhaps who really check the EntityID of the IdP, and are there some who are satisfied with the IdP just being in the federation metadata?
>
> This may seem like a silly question, but I'm just looking for a way to avoid a long drawn out manual process for hundreds of SPs...
>
> Thanks
> James
>
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