Cisco did a small scale demo/test with that exact scenario.  I don't
know a whole lot about it other than I talked with the guy that was
involved.  He said that the client units would build a GRE tunnel back
to somewhere and that is how they retained their same IP as they roamed.

My own dealings with several hospitals doing VoIP via wireless, it is
best for the APs to have the phone SSID in a big bridge, so you can hand
them off as the radio re-associates and it doesn't have to change IPs.
Then you don't have to worry about all the broadcasts because the only
devices in that VLAN/SSID are the phones themselves.  Then use another
SSID in another VLAN that is not in the bridge, but routed.


-----Original Message-----
Behalf Of Jon Langeler
Sent: Thursday, September 07, 2006 3:57 AM
To: WISPA General List
Subject: Re: [WISPA] Bragging on Mikrotik

It's too bad MT doesn't come up with a mobile roaming / routing 
protocol(unless they do and I don't know of it). Where the end user 
retains the same IP address even after it get routed between various 
towers and is wireless medium independent(wifi, wimax, cdma). Does 
anyone here have experience/ideas with that?

Jon Langeler
Michwave Tech.

Butch Evans wrote:

> On Wed, 6 Sep 2006, Brian Rohrbacher wrote:
>> How long is a ping?  Isn't windows ping like 4 sec?  7 times 4 = 28 
>> seconds. To me, (if my math is correct) 28 sec is frustrating, not 
>> seamless.
> Perhaps "seamless" is not the proper word.  We did some testing today 
> and a cop used his laptop at 6 locations throughout the city to surf 
> the web and do license checks.  From his perspective, it was 
> seamless.  From the perspective of the network...there were seams. Is 
> that a more clear explanation?

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