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How to add hotspot segment

Posted: Tue Jul 06, 2010 6:19 am
by someuser
I have an existing hotspot setup.
Internet------>Modem-------->(RB4750g)>PublicIP---Interface1-gateway---->Hotspot-Interface2----->AP bridge-->wireless<--------->Station-bridge----->WirelessAP---->Wireless Hotspot Clients.
If I want to add another separate (DHCP group) pool of Wireless clients through another Wireless AP but using the same terminating AP at the router(RB750G).
What is the most sensible way to add this second IP pool on the same interface?
Do I need to create a VLAN on the Hotspot interface?
Or, create another IP pool and another Hotspot server on the same interface?
Or can this all be done in UserManager?
I'd be experimenting but I presently have some paying customers I don't want to suffer the fallout of my learning how to Hotspot.
Thanks

Re: How to add hotspot segment

Posted: Tue Jul 06, 2010 6:43 am
by fewi
The Hotspot should be the layer 3 hop, or you're asking for trouble. The best way to go would be feeding the 750G VLANs on the inside and running separate Hotspot server instances on the VLAN interfaces.

Re: How to add hotspot segment

Posted: Tue Jul 06, 2010 8:15 am
by someuser
The Hotspot should be the layer 3 hop, or you're asking for trouble. The best way to go would be feeding the 750G VLANs on the inside and running separate Hotspot server instances on the VLAN interfaces.
Thanks fewi for the response,
I read something about the RB750G being minimal as far as Ram goes and understanding it's basically a SOHO device.
Would this device be able to handle say 100+ users? with 1 or 2 Vlan ?
Should this be done on a say a P4 box with 1-2 gig ram?

Re: How to add hotspot segment

Posted: Tue Jul 06, 2010 5:56 pm
by fewi
Maybe, but at 100+ users I'd upgrade to something like the 450G - still very affordable given the amount of users.

I strongly prefer RouterBOARDs to custom built hardware, but that's just me.

Re: How to add hotspot segment

Posted: Wed Jul 07, 2010 11:55 pm
by adrianatkins
Amazingly i tried a 750G for about 200 punters, and 2 lines using PCC - it doesn't even break sweat.

Make sure you got the connection tracking timeouts sensible though.

The default TCP timeout is 24 hours for some really wierd reason.

Re: How to add hotspot segment

Posted: Wed Jul 07, 2010 11:58 pm
by adrianatkins
The RAM requirement is about 340 bytes per NATted connection, so about 22 Mb total for all possible 65535 masqueraded source ports.

If your Conntrack timeout is say 2 minutes, it doesn't seem to ever fill up.

Isn't technology amazing ?