access point with layered

[thaar_altaiey]

hi everybody,

may i ask the following question, i feel it is simple:

1. is it right that access point is a L2 device and it can be mixed with router?

2. for cisco aironet series, still there are no 100mbps throughput ?

3. can any one tell me about 1300 and 1230ag series, perfomance and working?

best regards

eng thaar

[dixho]

1. is it right that access point is a L2 device

Answer: "yes"

and it can be mixed with router?

Answer: do you understand the question. Can you elaborate.

2. for cisco aironet series, still there are no 100mbps throughput?

Answer: That's correct. No wireless product on the market can achieve 100Mbps throughput. The real problem is that 802.11a/802.11b/802.11g is a shared media protocol (similar to half duplex 10Mbps ethernet). Thus, the best throughput in perfect environment is around 50% of the speed. (i.e. 5Mbps for 802.11b and around 27Mbps for 802.11a and 802.11g)

3. can any one tell me about 1300 and 1230ag series, perfomance and working?

Answer: both 1300 and 1230AG should have similar performance on 802.11g.

[thaar_altaiey]

hi dixho,

thanks for your info and reply, but really i am new in wireless.

Now i found a CISCO router with AP , and the whole system is L3 offcourse.

another question please, in cisco AP datasheet (ex 1100 , 15 nonoverlapped channel), what this means,is it mean that we can configure the AP for 15 different client each on per channel with equal throughput (54Mbps as an example) so the throughtput will not decrease as the number of clients are increased?

v. thanks in advanced

thaar

[thaar_altaiey]

sorry another question:

AP is L2 (hub/switch)?

thanks

[scottmac]

For the sake of practical application, consider the AP to be a HUB with some switch characteristics (like VLANs). Functionally, treat it as a HUB for design purposes.

Each AP will select (or it is manually configurable) only one channel to operate on. That channel is shared bandwidth for every client that associates to that AP.

If you needed to increase the client density in a given area, you could have multiple APs, each operating on a different (non-interfering) frequency / channel.

The channel spread also allows you and your neighbors to use the same technology without interfereing with each other.

(BTW: Hub = L1, Switch = L2, Router L3)

FWIW

Scott

[thaar_altaiey]

why its considered as HUB, VLANs is a L2 RFC, and the AP can filter based on SSID (VLAN)? only because it is not filter on MAC address? meanwhile i have an idea to make the AP sending to specfic host/destination. after configuring the AP for specfic SSIDs(VLANs), configuring clients adapter for specfic SSID, the client adapter then mix with its MAC address and send it to the AP (periodically) , so that the AP can put it in a filter table and use it next for sending. however it require further details.

can you guide me to any CISCO documents the describe the priciple of AP and indicate that it is like a hub.

v. thanks

[thaar_altaiey]

dear sir,

regarding the above idea, SSID can be converted to formate like MAC, and the omi antenna can be considered as stripped (one strippe/degree), so for 360 degree we 360 strippe (or port). this will treate the AP like switch. The AP can be intelligent, so that it can sense if hosts are nove to different locations and put these locations in the DB for some time.

V.thanks