Mobility Groups between WLCs across the WAN

[sivai2tech]

Experts,

I have 2 sites(A&B), which are connected via a WAN connection. I have 2 WLCs at the site A(main) and have 2 WLCs at site B(branch).

Can I make the mobility groups work across the WAN for site B(in case both the WLCs go down)?

EoIP tunnel, is possible?

Thank You,

S

[George Stefanick]

As long as you have ip connectivity you can create mobility groups across controllers. I don't know that I would do that. Keep in mind mobility messages will be shared across this link ..



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[Scott Fella]

I agree with George. You only need to have mobility between the two buildings if you have roaming between the two buildings. If the buildings are far apart, then there is no need for a mobility group to be the same.

You already have two WLC's at each site, so you already have redundancy.

If you had a campy environment and the buildings are in the same campus the I might have all the WLC's in the same mobility group, but that's as long as I know that I want seamless roaming and have coverage to roam from one building to the next.

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[sivai2tech]

Thanks George & Scott for your reply.

Yes, It makes sense that create seperate mobility groups for each site as each site has 2 WLC.

Thanks,

S

[Saravanan Lakshmanan]

my2c.

Mobility messages shared across wan link unencrypted.

wan bandwidth consumed for all mobility exchanges.

if fallback required, Add the remote WLCs on option 43/dns. on one local wlc failure if the other wlc doesn't have the enough capacity then the remaining APs go join the wlc across wan, seamless roaming doesn't happen when clients move between the APs joined on local and remote wlcs until that local wlc come backup.