Bandwidth requirement between controllers in mobility group

We have a potential project spanning two sites a few miles apart. We are hoping of putting 1 controller at each site in a single mobility group to provide AP failover if one controller is to fail. We are planning on a total of 25-30 APs, roughly half at each site.
Questions:
Whats the minimum bandwidth required between sites?
If bandwidth isn't adequate can this be done with both controllers at one site and H-Reap access points for the other site? Am I correct in thinking that you can have no more than 8 H-Reap access points per WLAN (16 Reap APs per WLAN)?
Thanks!

Thanks! I think it will be fine. I was more worried about the event of a failed controller which would cause more traffic between the other APs and the backup controller at the other site. However with all the APs in H-Reap local switching mode it should work.

Similar Messages

  • What will happen when I remove controllers from mobility groups?

    Hi,
    I'm wondering what exactly will happen when I remove a controller from a mobility group?
    1) Will it require a reboot? (I don't think so, nothing I've found says so)
    2) Will it deauth/reauth the AP's connected (I don't think so, nothing I've found says so)
    3) Will it do anything else goofy?
    I have 2 RF groups spanning continents over low speed links. All that is transmitted over mobility groups is session data correct? Not usernames, not ??? What am I missing here? I'm banging my head against the wall because I can't figure out why someone would configure the system in this way.
    Setup:
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    a few SSID's, one guest SSID, no DHCP on any of the controllers
    Thanks in advance,

    Hi,
    I'm wondering what exactly will happen when I remove a controller from a mobility group?
    1) Will it require a reboot? (I don't think so, nothing I've found says so)
    2) Will it deauth/reauth the AP's connected (I don't think so, nothing I've found says so)
    3) Will it do anything else goofy?
    I have 2 RF groups spanning continents over low speed links. All that is transmitted over mobility groups is session data correct? Not usernames, not ??? What am I missing here? I'm banging my head against the wall because I can't figure out why someone would configure the system in this way.
    Setup:
    WLC 4404, WLC 2100's
    WCS 5.2.148
    11xx series AP's
    Radius Auth for domain users
    a few SSID's, one guest SSID, no DHCP on any of the controllers
    Thanks in advance,

  • What are the bandwidth requirements between a WCS and a WLC?

    We have a customer who has two locations Site A (approx. 30 APs) and Site B (approx. 50 APs). Each site has a WLC. The customer wants to deploy a WCS at Site A that will monitor both WLCs.
    What I have been unable to find is how much traffic is going to be generated between the WCS at Site A and the WLC at Site B?
    Primarily, I would like to understand how this configuration will impact their point to point WAN link.
    Also, are there any known requirements in terms of max. allowable latency between the WCS and WLC?
    Any anectdotal evidence would also be appreciated - such as any experiences running this over a T1.
    In this particular case, the customer has a 100Mbps wireless point-to-point link as their WAN link, but I do not know the actual throughput capacity and/or if it is half or full duplex.
    Thanks,
    John

    John,
    This is very interesting question and I will try to answer with what I know after supporting WCS for a while.
    WLC and the WCS communicate over SNMP only. The generated traffic is SNMP (UDP). It's not a lot in terms of bandwidth, should I say quite minimal. Running over a T1 (not congested!) should be completly fine.
    There are a few things we can control about snmp as you are over a WAN link: we can increase the SNMP timeout, we can increase the SNMP retries and also, we can reduce the max varbinds per PDU, so the snmp packets sent are smaller and dont get fragmented over your WAN ISP.
    As SNMP is UDP, the only things you can control is the timeout and the number of retries because UDP doesnt have the control that TCP offers.
    The most intense traffic will be when you first add your controllers in WCS.
    I have seen quite a few deployments with WCS over WAN link and tweaking those settings I mentioned made it possible.
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  • Bandwidth requirement for a Mobile solution

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  • 2500 series support mobility groups?

    Do you know if the new 2500 series controller supports things like mobility groups?  Could I use 2 of these and do inter-controller roaming.
    Also do you know if this would work with a 2106 controller and a 2505 controller or are they 2 completely independent controllers only knowing about their own APs??

    Hi smailmilak,
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    More informations are here:
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  • WLC mobility group between 4404 and 5508 controllers

    Mobility 'Control and Data Path Down' between 4404 and 5508 WLC's.
    Hello, we have 5 x 4404 WLC's running 7.0.240.0 with mobility configured fine between them.
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    Symmetric Mobility Tunneling (after reboot) ..... Enabled
    Mobility Protocol Port........................... 16666
    Default Mobility Domain.......................... SGH-Mobility
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    Mobility Domain ID for 802.11r................... 0xe209
    Mobility Keepalive Interval...................... 10
    Mobility Keepalive Count......................... 3
    Mobility Group Members Configured................ 6
    Mobility Control Message DSCP Value.............. 0
    5508 ouput when issueing the command 'show mobility summary'
    Mobility Architecture ........................... Flat
    Mobility Protocol Port........................... 16666
    Default Mobility Domain.......................... SGH-Mobility
    Multicast Mode .................................. Disabled
    Mobility Domain ID for 802.11r................... 0xe209
    Mobility Keepalive Interval...................... 10
    Mobility Keepalive Count......................... 3
    Mobility Group Members Configured................ 6
    Mobility Control Message DSCP Value.............. 0
    I've spent quite some time double checking all the configurations to no avail.
    Has anybody seen this problem before?
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    Thanks Sandeep.
    I am well versed with WLC's and mobility, however trying to add a 5508 to a mobility group with 4404's has come up with a bit of a curve ball.
    All the 4404 controllers all joined the mobility group fine, no problems at all - its only the 5508 I am struggling with.
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    Interestingly I have found the 5508 reports its own management interface MAC address incorrectly when viewing the Mobility Groups:
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    {Screen shot WLC1.jpg}
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    From our router is I do an sh arp | i 10.95.x.x (controller management address), I see:f872.eaee.becf.
    {Screen shot wlc2.jpg}
    Hence the WLC reports as: bc:16:65:f9:37:60
    and
    The network reports as: f872.eaee.becf for the same IP address.
    I have changed the other WLC's to the MAC adress seen on the network for the new controller, aka changed from
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    Kind regards
    Dave Bell

  • Can we create Mobility group between WISM2 and WLC 5500

    Dears,
    I need your feedback urgent please,
    Can we create Mobility Group between WISM2 and WLC 5500
    Firmware for WISM2 > 7.4.121.0
    Firmware for WLC5500 > 6.0.196.0
    I created Mobility Group with (IP address , MAC Address and Mobility group name) for Foreign Controller. if any configuration required from my side.
    Wait your feedback urgent please
    Regards,

    Hi,
    Controllers do not have to be of the same model to be a member of a mobility group. Mobility groups can be comprised of any combination of controller platforms.
    Thats enough :)
    Regards
    Dont forget to rate helpful posts

  • Mobility Group Requirements for Guest Anchor WLC

    Hello -
    I've alway assumed you can't create a guest tunnel between a local WLC and an anchor WLC that are in different mobility groups.   However, I was told recently (without much detail) that this is possible.  So I have set out to test this.  
    I am trying to point one of my local WLCs guest SSIDs to a guest anchor WLC in a different mobility group.   I have a maintenance window coming up and I am looking to anchor the clients on one campus to the anchor WLC on the other campus so guest service does not go down.   Each campus is it's own mobility group.   In trying to set this up I went to the "mobility anchors" screen for the guest SSID on one of the local WLCs and I am unable to add the anchor WLC from the other campus because it's non in the drop-down menu.  This is because it's not in the same mobility group.   So my question is how do I anchor clients coming through a local WLC in one mobility group to an anchor WLC in another mobility group?
    To me it doesn't seem possible without significant configuration changes.   I don't want to reconfigure/recreate mobility groups. 
    Thanks
    Chuck

    Not only is it possible, I would recommend it. However, you may be confusing some concepts.
    The Mobility Group is different than the Mobility Domain.  I generally refer to the Mobility Group as those WLCs with the same Default Mobility Group Name, and the Mobility Domain as the entire Mobility List (where you can define up to 72 controllers from various mobility groups).
    The point is that if WLCs 1-10 are GroupA, and WLCs 11-20 are GroupB, for anchoring to work you at least need to add the anchor to the mobility list of the foreign wlc, and vice versa.
    If you notice, when you add a mobility entry to the list, it should ask you for mobility group. If you leave it blank, it should default to that of that WLC,  but on GroupA controllers, you could define GroupB controllers (and specific GroupB) and then you should now have mobility established between your controllers and the Anchor configuration will have your anchors in the drop-down....
    Does that make sense?

  • Mobility groups between WLC 4400 & 5500

    Can I configure a mobility groups between 4404 Wireless LAN Controllers and 5500 Wireless LAN Controllers?
    Thanks.

    Yes, the platform doesn't matter. The code used to matter but recent versions are ok between each others.
    Nicolas
    ===
    Don't forget to rate answers that you find useful

  • Mobility groups between WLC 2106 & 5500

    Can I configure a mobility groups between 2106  Wireless LAN Controller and 5500 Wireless LAN Controllers?
    Thanks.

    Hi Patricia:
    Welcome to the forums then.
    Actually Scott's answer was the correct one. Not mine. So just to appreciate Scott's efforts (Thanks Scott) try please to mark his answer as the correct answer. Just below his answer there is a button to mark it as correct answer.
    Come back soon.
    Amjad
    Rating useful replies is more useful than saying "Thank you"

  • Layer 2 & Layer 3 Controllers in Same Mobility Group

    I want to upgrade the existing Layer 2 contollers 4100 and AP 1200 (in the same subnet) to Layer 3 (controller is different subnet from AP). Due to migration in phases, I need to have mix Layer 2 and Layer 3 controllers in short period of time. Any issue if there is mixed Layer 2 and Layer 3 controller in the same mobility group. Additionally, any concern if user roaming between Layer 2 and Layer 3 controllers in the same mobility group? Thank you.

    On the controller page, General, there is a option LWAPP Transparent Mode to select Layer2 or Layer 3 mode of the controller. Not sure why can't convert from L2 to L3.
    Actually I had converted few L2 controllers to L3 in the same mobility group in lab. I concern if there is any problem if mix L2 and L3 controler in the same mobility group. Thanks.

  • Mobility group between controller 4400 and virtual wlc

    Hello everybody...
    I read the configuration guide about the 7.3 release. And I figured out that you will need a hash key for establishing a mobility group relation between a controller and a virtual controller. The 7.3 release for the 5500 series works fine for me.
    But the latest release 7.0.235.0 for the wireless lan controller series 4400 does not have a functionality to add a hash key while creating a new mobility group member.
    The command "config mobility group member hash" is totally missing.
    Does anybody have an idea how to establish a mobility group between a 4400 controller and a virtual then?
    Best regards,
      Sebastian Wieseler

    The vWLC is out since yesterday.
    We installed it in our lab and the deployment guide is out now, too.
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  • Multicast between wirless clients on same AP and Mobility Group

    We have a autonomous wireless setup with a WLSM and WLSE. I have an issue with where I have 2 wirless clients that need to communicate using a multicast address for an application to work.
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    A debug on the sup720 shows the upstream multicast from one of the clients but you see no activity downstream to the other client.
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    Tunnel176 is up, line protocol is up
    Internet address is 53.32.176.33/27
    Multicast routing: enabled
    Multicast switching: fast
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    May 9 15:15:31: IGMP(0): Received v2 Report on Tunnel176 from 53.32.176.33 for 224.0.1.40
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    May 9 15:15:31: IGMP(0): Updating EXCLUDE group timer for 224.0.1.40
    May 9 15:15:31: IGMP(0): MRT Add/Update Tunnel176 for (*,224.0.1.40) by 0
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    May 9 15:16:25: IGMP(0): Set report delay time to 0.9 seconds for 224.0.1.40 on Tunnel176
    Please help as I need to get the 2 clients communicating using the multicast stream.
    Thanks
    Martin

    Have you enabled multicast mode on the controller ?
    If so, in what mode ? Unicast or multicast ?
    If you selected multicast mode, do you see the controller joining the original stream and sending it to the LWAPP distribution group to the other APs ?

  • WLC 5500 mobility group failover

    Hey
    I have a Question i am testing  mobility group with
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    And both the controllers have the same version
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    Also with this thus the second wlc need to have the same
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    Thanks

    What do you mean by "convers". An AP will only join one wlc and when that primary wlc is no longer available, should failover to the other/secondary wlc. Mobility is required for an AP to know about all the other APs in that mobility group. And if not configured correct, your AP will only be able to join that wlc.
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    Scott Fella
    Sent from my iPhone

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