Re: Subnets in Wireless Service Providers http://www.dslreports.com/forum/r16516034 en Fri, 04 Dec 2009 23:05:49 EDT Fri, 04 Dec 2009 23:05:49 EDT Re: Subnets http://www.dslreports.com/forum/remark,16524016 inova : Thanks, I'll give it a go...]]> http://www.dslreports.com/forum/remark,16524016 Tue, 18 Jul 2006 11:56:12 EDT Re: Subnets http://www.dslreports.com/forum/remark,16524002 gmcintire :
said by inova See Profile :

Ok, so that's what that means. Would using this feature be problematic if both sides of the radio were on public or 192.168.xxx.xxx schemes?
It shouldn't matter what IP space each interface your AP has because the isolation is done at layer 2, while routing is layer 3.]]> http://www.dslreports.com/forum/remark,16524002 Tue, 18 Jul 2006 11:54:08 EDT Re: Subnets http://www.dslreports.com/forum/remark,16523833 inova : Ok, so that's what that means. Would using this feature be problematic if both sides of the radio were on public or 192.168.xxx.xxx schemes?]]> http://www.dslreports.com/forum/remark,16523833 Tue, 18 Jul 2006 11:26:07 EDT Re: Subnets http://www.dslreports.com/forum/remark,16523212 gmcintire :
said by inova See Profile :

Hmmm, netbios garbage... I have thought about that but don't have the first clue how to deal with it. How would I filter it at the CPE? Given the Delib 23xx radios I have been using.
The DLB-23xx support Layer 2 client isolation, just enable "Block WLAN Relay."

Directly from the manual:

The device supports isolation function. If you are building a public Wireless Network, enable this function can provide better security. The device will block packets between wireless clients (relay). All the wireless clients connected to the device can’t see each other.
]]> http://www.dslreports.com/forum/remark,16523212 Tue, 18 Jul 2006 09:54:47 EDT Re: Subnets http://www.dslreports.com/forum/remark,16521936 inova : Hmmm, netbios garbage... I have thought about that but don't have the first clue how to deal with it. How would I filter it at the CPE? Given the Delib 23xx radios I have been using.]]> http://www.dslreports.com/forum/remark,16521936 Tue, 18 Jul 2006 01:19:54 EDT Re: Subnets http://www.dslreports.com/forum/remark,16521514 joshg409 : If you are only talking a few customers at each hop plus backhauls you can bridge it with little problems. Implement the addressing scheme as trc120 states. You can interchange the pc for your internet facing router and add secondary IP's to the interface. Backhauls, Infra, and management pc's on one subnet and the CPE on another. Make sure you filter netbios etc at the CPE or put routers at the customer site to prevent browsing. Remember Windows workgroup garbage is not routeable (netbios) so if you bridge that garbage will come all the way back to the router.]]> http://www.dslreports.com/forum/remark,16521514 Mon, 17 Jul 2006 23:45:35 EDT Re: Subnets http://www.dslreports.com/forum/remark,16517517 inova : joshg409, I am thinking that routing or switching won't help me much. My scenario is the first AP(only one AP, 90* sector) at the noc is associated with several clients and a couple of repeaters. Each of those repeaters get a couple more clients and another repeater. My mission is to cover lots of miles of sparsely populated rural area. All the traffic inevitably flows to the noc and switches or routers won't isolate anything. If there were two APs at one point it would be different. Does this make any sense? I think my description may be lacking somehow...]]> http://www.dslreports.com/forum/remark,16517517 Mon, 17 Jul 2006 14:25:33 EDT Re: Subnets http://www.dslreports.com/forum/remark,16517306 PersComp :
said by inova See Profile :

trc120, I believe you nailed it.
I agree.
--
Every dog has his day, but good dogs have two!]]> http://www.dslreports.com/forum/remark,16517306 Mon, 17 Jul 2006 13:56:03 EDT Re: Subnets http://www.dslreports.com/forum/remark,16516544 joshg409 : Think of how many users you will support, a /24 or 255.255.255.0 can only support a max of 253 devices or IP's. You will have more problems running bridged than routed and more problems with collisions on bridged than routed. You can negate some of that by connecting the AP's to switches but the size of your IP address block won't matter. We have a client that runs over 2000 machines we backhaul the data, they have crazy subnets on their side of the network. When you get to that many devices your problem will be bandwidth! Download a free subnet calculator from solarwinds.net.

We run mikrotiks and each interface is routed and has a /24 per AP. Way to many IP's but it keeps it clean and easy to remember where devices are connected.]]> http://www.dslreports.com/forum/remark,16516544 Mon, 17 Jul 2006 12:18:20 EDT Re: Subnets http://www.dslreports.com/forum/remark,16516361 inova : Perscomp, I read that too many machines on a subnet is an invitation for collisions. Maybe I am reading too much?

trc120, I believe you nailed it. Ok, I figured out how to put multiple IPs on a single card. what would you suggest would be better ip/mask scheme? I thought as long as I avoided linky-dinky defaults I should be good to go. Are you thinking of making the subnets smaller?]]> http://www.dslreports.com/forum/remark,16516361 Mon, 17 Jul 2006 11:56:03 EDT Re: Subnets http://www.dslreports.com/forum/remark,16516034 trc120 : On a windows machine if you assign a static ip on your management computer you can go to advanced tcp/ip settings and add additional ip addresses and subnet masks. Then you can get to both segments.
I think what you are wanting to do is:
Pfsense 192.168.10.1 with DHCP. All customer computers would get an address assigned to them in that subnet.

All infrastructure on 192.168.20.xx Assign address statically to these radios.

Windows management computer: main ip set to 192.168.10.2/24 secondary address 192.168.20.10/24 With this you can access both subnets.

These are just example numbers. There are probably better choices for infrastructure ip and subnet masks.

Hope this helps,
Todd]]> http://www.dslreports.com/forum/remark,16516034 Mon, 17 Jul 2006 11:03:21 EDT Re: Subnets http://www.dslreports.com/forum/remark,16515149 PersComp : The simplest way to be able to access across the segments, is to loosen the subnet mask to 255.255.0.0 and you are no longer masking the segments from each other.
--
Every dog has his day, but good dogs have two!]]> http://www.dslreports.com/forum/remark,16515149 Mon, 17 Jul 2006 07:26:54 EDT Re: Subnets http://www.dslreports.com/forum/remark,16514759 inova : I think I mean subnet. I thought that 255.255.255.0 was a subnet mask while a segment was a physical grouping and a subnet was a logical grouping. 2 separate segments of the same network could have the same subnet if they were behind there own routers, correct?]]> http://www.dslreports.com/forum/remark,16514759 Mon, 17 Jul 2006 03:05:50 EDT Re: Subnets http://www.dslreports.com/forum/remark,16514753 kf6ytc : do you mean segments or subnets?

192.168.1.x is a segment

255.255.255.0 is a subnet]]> http://www.dslreports.com/forum/remark,16514753 Mon, 17 Jul 2006 03:03:10 EDT Re: Subnets http://www.dslreports.com/forum/remark,16514653 inova : Currently I am bridged, explicitly on Deliberant 23xx radios and without option on CB3s. My failure mentioned in my first post was that the client pc could not obtain a dhcp lease from the pfSense box when the bridging AP and CPE were on a different subnet(I am just testing this arrangement using the clients on one AP as guinea pigs). I assume this is possible and therefore my problem must lie elsewhere. The only router employed normally is at the NOC, many miles from me and the other APs. How do you put multiple subnets on one machine? Do you need multiple NICs? I am at a point where I can see I need to get better organized. I doubt I will ever see 100 clients but it seems like a good number to plan around.]]> http://www.dslreports.com/forum/remark,16514653 Mon, 17 Jul 2006 02:26:38 EDT Re: Subnets http://www.dslreports.com/forum/remark,16514370 IntraLink : Are you routing?

If you are bridged then you need that all the subnets on your machine that you are using to access the devices.

If you are routed then you need to add a route to get between subnets.

It is a good idea to keep the client machines on a different subnet than the CPE, AP and other devices (which would be to use an internal subnet).]]> http://www.dslreports.com/forum/remark,16514370 Mon, 17 Jul 2006 01:08:08 EDT Subnets http://www.dslreports.com/forum/remark,16514291 inova : I hope there is a super simple solution here that I am just failing to see... but here goes:

If I wish to place 2 APs on separate subnets (eg. 192.168.10.x and 192.168.20.x) and my pc is on the 20.x subnet, how do I monitor and manage the client radios on the 10.x subnet without physically travelling to where I can associate with the 10.x subnet?

Can a client pc be on a different subnet than it's CPE and AP?(I just finished trying this with a pfSense box and failed) :( I am thinking it might be good to have all the monitored devices on one subnet and all the PCs on their own subnet.]]> http://www.dslreports.com/forum/remark,16514291 Mon, 17 Jul 2006 00:49:59 EDT