Some design considerations to be careful of. In local mode the default is to not forward broadcast traffic. Because flexconnect is just bridging wired and wireless interfaces it forwards broadcast.
It is even more important that you segment wired and wireless clients into different Vlans or you will find that you quickly consume all your airtime with wired broadcast traffic forwarding out over the air. We see a lot of people trying to do wired PC + wireless flexconnect clients on the same Vlan for mDNS and link-local services but you take a significant hit to airtime sending BUM (broadcast, unknown unicast and multicast)traffic over the air. I've seen where a PC or Mac scanning for hosts on the network can consume most of the airtime due to netbios or AFP discoveries. You may also want to put L2 acls or storm control on the wired side to limit how much impact you see in a flex design. Sent from my iPhone > On Apr 25, 2015, at 6:16 AM, Hector J Rios <[email protected]> wrote: > > <image001.jpg> > Jeff, > > Everything that Frans said. Plus, check the subject “ResHalls”, that had a > good discussion on Flexconnect. Below is an email I had sent. In the end, the > cons led us not to use FlexConnect and we stayed in local mode. > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Hector J Rios > Sent: Tuesday, March 17, 2015 9:28 AM > To: [email protected] > Subject: Re: [WIRELESS-LAN] ResHall Wireless > > I tested FlexConnect on 8.0.110.0. Here are my observations: > > *Great alternative to switch data locally (obviously) > *No AVC Support > *When controller is down, AP goes into standalone more. Must make sure that > AP is not able to reach any other controller you don’t want. This was fixed > with an ACL. > *Client details page does not show client IPv6 address. Client still gets > IPv6 address. (PRIME does show it if you run a report). > *Client details page does not show VLAN ID. > *Putting AP in FlexConnect mode does not require reboot (Cool!) > *No IPv6 ACL support > > More testing to do, but so far so good. > > -Hector > > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Legge, Jeffry > Sent: Thursday, April 23, 2015 5:05 PM > To: [email protected] > Subject: [WIRELESS-LAN] FlexConnect > > I am not currently using any Aps in FlexConnect mode in any buildings on > campus. > We are building a new building and I have been asked to use FlexConnect mode > for the Aps in this building. > Is anyone using FlexConnect in campus buildings? If so why are you using it > rather than Local mode and is it more or less difficult to configure. > > Jeff Legge > Radford University > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/groups/. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
