How are mobility groups created, excluding mobility anchors?
A.
Each WLC must use the same mobility domain name and be defined as a peer in each other's static mobility members list.
B.
If WLCs with HA SSO are deployed, each WLC in the WLC HA pair is considered separately as a mobility peer.
C.
The WLCs do not have to be of the same model or type to be a member of a mobility group; however, each member should be running different software versions.
D.
A mobility group does not require all WLCs in the group to use the same virtual IP address.
Answer A is correct
To create a Mobility Group, you just add WLCs to the Mobility Group Member list (of each WLC). WLCs with the same Group Name will end up in the same Mobility Group.
If you add WLCs with a different Group Name to the list, they will form a different Mobility Group, but end up in the same Mobility Domain. The Mobility Domain can contain up to 3 Mobility Groups.
A is correct , as B. is wrong , each WLC in WLC HA pair cannot be considered separately as a mobility peer, physically they are 2 WLCs, but from function point of view, in Mobility group you should consider them as one.
C. is wrong, the WLCs do not have to be of the same model or type to be member of mobility group.but to be functional the should run same software version.
D. is wrong as all WLCs in mobility group should use same virtual IP address.
Think A is correct but its not precise. According to Cisco book: mobility domain - A logical grouping of all mobility groups within an enterprise. So in theory the WLC can be on different mobility groups BUT on the same mobility domain. Hence, A is correct, however is not precise because to being called peers they should be on the same mobility group. Its the best answer of this 4 imo.
"Each WLC must use the same Mobility Domain name and be defined as a peer in each other’s Static Mobility Members list. The exception to this rule are when guest anchors are deployed where Cisco recommends deploying a separate Mobility Group for the guest anchors". Enterprise Mobility 8.5 Design Guide, Ch2, p2-57
If you go to WLC GUI and click the Controller tab you will see the Default Mobility Domain Name field. I think it's what is meant.
If you check further this guide on the p 10-20 you will see the phrase
"The "Group Name" in Figure 10-13 above is the name configured under the foreign WLC's 'Default Mobility Domain Name'".
They mixed up 2 concepts in that guide and in the Official Cert Guide and they didn't write in the Official Cert Guide that to assign a WLC to mobility group you need to fill the Default Mobility Domain Name field.
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