When describing wireless portion of an enterprise campus network, which one of these statements should serve as a strict guideline?
A.
Wireless controllers should be distributed throughout the building distribution layers
B.
Dynamic controller redundancy, where the access points attempt to join the least loaded controller, is a best-practice approach.
C.
Wireless controllers should be centralized in the core layer
D.
To improve the RF coverage, the controllers of any building should be put in the same mobility
group.
Explanation:
N+N redundancy allows for logical partitioning of APs, deployed in such way the APs do not associate with WLC in random way.
Link: http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCDA/design/understanding-wireless- network-controller-technology-3/player.html
(C) The general recommendation is to use a centralized design for controller placement to minimize operational complexity and support
Chapter 10: Identifying Design Considerations for Basic Wireless Networking 467
It’s A and C. Page 183 of CCDA 640-864 Official Cert Guide – “WLCs can be palced in a central location or distributed in the campus distribution layer”.
it’s C.
campus distribution layer (singular) is not (?) the same as building distribution layers (plural). best practice (per p.183 of Cert Guide, as CCDA2BE mentioned) is to centralize in the core or ‘centralize’ in the campus distribution (not de-centralize throughout the building distribution layers).
that’s my reading of it anyway.
http://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/emob41dg/ch2_Arch.html#wp1032226
The general recommendation of this design guide is to deploy the WLCs at a central location within the overall campus environment. The distributed deployment model (which would require mobility groups and Layer 3 roaming) is well proven, but it is not recommended because of current shortcomings with multicast support associated with Layer 3 roaming.
It’s A. While confusing this is a process of elimination question. We can all agree B and C don’t make sense so that leaves A and C, but you certainly aren’t going to put your controllers in the CORE layer so that doesn’t make sense either. This leaves A as the only viable, if misleading, answer.
Er, I meant we can all agree it isn’t B or D.