H3C WLAN Product Training APR Nico Wang 2010 May
Contents H3C WLAN Product Introduction Key Technical Features H3C UMN Solutions and Advantages Annex: Product Details
H3C Wireless Product Series S7500E Blade S9500E Blade WX6103 AC AC 58(big) 58(small) WX5002 WX5004 WX3024 WX3010 WX3008 FIT/F /FAT A AT AP WA2612-AGN WA2110-AG WA2620E-AGN WA2210-AG WA2210X-G WA 2620-AGN WA2610E-AGN WA2220-AG WA2220X-AG
H3C AC Products Position Product Model Maximum APs Positioning H3C WX3008 8 Unified Switch, For SOHO & small-sized enterprise networks H3C WX3010 24 Unified Switch, For SOHO & small-sized enterprise networks H3C WX3024 48 Unified Switch, For SOHO & small-sized enterprise networks H3C WX5002-64 64 For medium and small-sized enterprise networks and medium and small-scale hotspot coverage H3C WX5004-256 256 For medium enterprise networks and hotspot coverage H3C S5800 64AP 64 For medium and small-sized enterprise networks and wireless blade module medium and small-scale hotspot coverage H3C S5800 256AP 256 For medium enterprise networks and hotspot coverage wireless blade module H3C WX6103 640 For large enterprise network, WLAN access to MANs, wireless MAN coverage, and hotspot coverage H3C LSQM1WCMB0 640 For S7500E chassis switch H3C LSRM1WCM2A1 640 For S9500E chassis switch. Enterprise 11n, SMB market Unique Main Product Unified Switch
H3C AP Products Position Product Model AP Type Positioning H3C WA2110-AG FIT AP Indoor model (single radio) For small radius indoor areas and normal environment H3C WA2210-AG FIT/FAT AP Indoor model (single radio) For small radius indoor areas and normal environment H3C WA2220-AG FIT/FAT AP Indoor model (double radios) For small radius indoor areas and normal environment H3C WA2210X-G FIT/FAT AP Outdoor model (single radio) For outdoor harsh environments H3C WA2220X-AG FIT/FAT AP Outdoor model (double radios) For outdoor harsh environments H3C WA2610E- FIT/FAT AP Enhanced 11n model (single radio) AGN For harsh environments, like warehouse, factory workshop, etc. H3C WA2620E- FIT/FAT AP Enhanced 11n model (double radios) AGN For harsh environments like warehouse, factory workshop, etc. H3C WA2612-AGN FIT/FAT AP Indoor 11n model (single radio) H3C WA2620-AGN FIT/FAT AP Indoor 11n model (double radios) Low-cost 11n indoor AP 11 a/b/g New Product
H3C WLAN Products Selling Points Both unified wired and wireless solution. (Cisco alternative; Aruba can not provide such kind of unified solution). Can provide FIT/FAT AP solution. (Aruba only has FIT AP solution). WX3000 series unified switch with 10Gigabit uplink and PoE+ capability. (HP/Aruba can not provide such kind of unified switch). Unified management for wired and wireless products. (Cisco uses two NMS to manage wired [Ciscoworks] and wireless WCS] products). Big scale and high-performance stand-alone AC: WX6103. (Cisco can not provide such kind of access controller). Big scale and high-performance AC blade for high-end switches. (Aruba cannot provide such kind of access controller).
3Com/H3C Wireless AC Compatible List Item 3Com WX 3Com WX 3000 H3C WX FAT AP (Trapeze) 3000/5000/SecBlade 3Com AP 7760 Yes No Yes, need switch to FIT Yes, need switch to FIT 3Com AP 8760 Yes Yes, need switch to FIT Yes, need switch to FIT Yes, need switch to FIT 3Com AP 9152 Yes No Yes, need switch to FIT Yes, need switch to FIT 3Com AP 9552 Yes No Yes, need switch to FIT Yes, need switch to FIT 3Com AP 2750 No Yes No No 3Com AP 3150 No Yes No No 3Com AP 3750 No Yes No No 3Com AP 3850 No Yes No No 3Com AP 3950 No Yes No No H3C WA 2110 No No Yes Yes H3C WA 2220 No No Yes Yes H3C WA 2620 No No Yes Yes H3C WA 2610E No No Yes Yes H3C WA 2620E No No Yes Yes
Contents H3C WLAN Product Introduction Key Technical Features H3C UMN Solutions and Advantages Annex: Product Details
Wireless Transmission Between AP and AC 802.11 dat a 802.11 dat a 802.11 dat a 802.11 dat a 802.3 dat a CAPWAP Tunnel LAN IP Network Wireless Client AC AP User data is transferred via CAPWAP tunnel between AP and AC. AC is the bridge between wireless and wired communications. In centralized control mode, all the wireless and wired packets exchanging must be forwarded by AC.
Management Initiation of AC to FIT AP DNS 1. AP gets IP address, DNS server and domain DHCP AC FIT AP Server Server name from DHCP server. 2. AP sends discovery request message to AC. IP address 、 3. If there is no response after the AP tries several DNS Server 、 times: Domain name The AP will get the IP address of H3C.xxxx.xxx (xxxx.xxx is the domain AC receives discovery request name that AP learns from the DHCP server) and sends discovery request message to If no response this IP address. Get the AC IP address from DNS server 4. After receiving the discovery request message, AC receives discovery request the AC will check if the AP has the authority to join it, if Yes, the AC will respond with discovery response message and validate the AP in. AC responds with discovery response 5. AP downloads the latest firmware from AC. AP firmware downloading 6. AP downloads the latest configurations from AC. AP configuration downloading 7. Last, the AP begins to work and exchange user data with AC. User data transferring
Forwarding Modes of FIT AP Centralized Forwarding Local Forwarding Any Smart Mobile Intelligent WLAN controller Offered load exceeds controller capacity X Offered load increases with 802.11n Offered load increases with 802.11n • All AP traffic must pass through AC. • The AP traffic does not pass through AC. • Delicacy management • No delicacy management. • The AC will be overloaded if there is too much 11n traffic. • Can forward large-capacity 11n traffic without bottleneck from AC.
Flexible Switching Between FAT/FIT All H3C access points (except WA2110-AG), support both FAT and FIT modes. FAT AP deployed in small network scale no controllers required FIT AP AC FAT AP FIT AP deployed in large network scale Centralized management by controllers Zero configuration “Plug and Play” “Just one Command Line Change WLAN Deployment”
H3C RRM RRM: Radio Recourse Management A: The AP collects the RF information in real time and reports it to AC periodically; B: The AC analyze the data collected from APs; C: The AC make a global plan of each AP about transmitting power, channel, etc. D: The AP implement the optimized RF configurations from AC A B Analysis Collection D C Implementation Decision
FIT AP Channel Auto Selection Basic Points Key APs in the network will get best channels first; Avoid to use the channels interfered by radar; Statistics of channel status, including channel utilization, interference, etc. Avoid Co-channel interference; Avoid the channel interference of other networks’ APs. Before adjustment After adjustment BSS BSS 2 2 BSS1 BSS 1 BSS CHANNEL 1 5 BSS 5 CHANNEL 6 BSS 3 BSS 3 CHANNEL BSS BSS 4 11 4
Auto Adjustment of FIT AP FR Power Basic principles To ensure reasonable signal coverage. Too large coverage will influence the network throughput and performance. To ensure certain signal overlapping, to avoid coverage black hole. The AC will adjust the AP power one by one to make every AP provide enough signals to get total coverage of the network. The AC supports to recover the signal coverage black hole in case some of the APs be offline. (see below example) Before adjustment After adjustment
Intelligent Load Balance AP2 Rejection of association AP1 The AC can make user load balancing among Acceptation of association the APs Load balancing can be based on accessed user number, or AP traffic Load balancing mechanism If the AP traffic has passed its threshold, the AC will reject any new access user and Overlapped area for load balancing calculate automatically to find a neighbored AP to permit the user access The H3C load balancing technique will be AP2 AP1 effective only for the wireless users in the overlapped area to avoid false load balancing in non-overlapped areas. Non-overlapped areas H3C intelligent load balancing technique
H3C WLAN Reliability (1) To ensure non-stop service for wireless users in case of single point failure. (2) The backup of AP and user data is required. 1+1 (3) Fast failure detection and fast switching are required (4) Support hot backup of plain text or certificate authentication users. (1) One AC will provide backup for multiple ACs to save network construction cost. N+1 (2) If the master AC recovers, the backup AC should be switched back to the master AC. (3) Support maximum 4+1 AC backup (1) N ACs provide backup for another N ACs. N+N (2) Support both redundant backup and load balancing.
1+1 AC Fast Backup Only supported by WX6100 and WX5004 User data flow User data flow Aggregation switch If master AC is shutdown Heartbeat detection Master AC Backup AC Access Network Master CAPWAP Backup CAPWAP Tunnel Tunnel AP The backup AC will notify the AP to switch its backup CAPWAP tunnel as master. The backup AC can detect the master AC which is shutdown immediately (For WX6100 in 100ms ; for WX5004 in 300ms) and implement the switch operation. In the 1+1 fast backup mode, the backup AC will not provide user access services.
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