1. Nice AP for the price – not much else out there to compete
2. We have about 50 – expect a 20% failure rate / year. They do NOT like the sun, very heat sensitive (even in aircon room)
3. They have major issues talking to IBM Gigabit Ethernet. Took me AGES to track this down. They will respond (ping, HTTP), but will NOT pass from the Ethernet to the Wireless interface if you are using an IBM Laptop or PC with Gigabit interface (running on a 100MBit switch). Yeah, I tried cables, switches, different PC. Same results. Talk to it, not through it.
4. When in AP Client mode they are REALLY REALLY crap. They translate the MAC Address of the host to their MAC. 3 hosts behind – all appear to have the same MAC to the server. The AP is supposed to sort out this shamozzzle when the packets return – guess what – they can’t. 50% of data packets it drops is bundle and you can’t talk. Another mongrel to diagnose, I love sniffers. Client side looks like packet drop. Server side looks fine – till you check the ARP table. Symptoms are 3 PC’s behind 2100 configured as AP Client. All 3 will get IP’s thru DHCP no problems with correct MAC addresses in DHCP server (only translates some packets obviously). Try doing stuff – each host will work then drop out in turn depending on who is sending what. Looks like the 2100 has limited buffers and can’t cope.