WWiirreelleessss MMeesshh NNeettwwoorrkk TTeecchhnniiccaall OOvveerrvviieeww Danny Ng mailto:[email protected] WWhhaatt iiss aa WWiirreelleessss MMeesshh NNeettwwoorrkk ?? Traditional WLAN Architecture Access Point 10/100BT Ethernet Backbone Ethernet Network Access Point IEEE 802.11 a/b/g 2 WWhhaatt iiss aa WWiirreelleessss MMeesshh NNeettwwoorrkk ?? WLAN with Wireless Transit Backbone Ethernet Network Access Point 10/100BT Ethernet Access Point IEEE 802.11 a/b/g Wide variety of Wireless Transit technology 3 WWhhaatt iiss aa WWiirreelleessss MMeesshh NNeettwwoorrkk ?? Wireless Mesh Backbone Ethernet Network Access Point 10/100BT Ethernet Access Point IEEE 802.11 a/b/g Wireless transit with Inter-AP ‘Meshing’ protocol 4 PPrroottoottyyppee NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P AAA Service DHCP Border Internet at large Service Service Gateway Policy Subscriber Enterprise / ISP Service Mgmt Service Backbone Firewall, Network NAT, etc. NOSS WG-1 WG-2 CAN-Alpha Enterprise / ISP / Metro NAP-R1 Distribution Network NAP-R2 NAP-R3 AP AP AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 5 NNoorrtteell WWiirreelleessss MMeesshh NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P AAA Service DHCP Border Internet at large Service Service Gateway EEnntteerrpprriissee // IISSPP Policy Subscriber Service Mgmt Service BBaacckkbboonnee Firewall, NAT, etc. NNeettwwoorrkk NOSS WG-2 Enterprise/ISP Backbone Network • Carry IP traffic between Wireless Gateways (WG) and other elemeCnAtsN o-Af ltphhea Enterprise / ISP Network (e.g. Border Gateways (BG), NOSS servers). Enterprise / ISP / Metro NAP-R1 Distribution Network NAP-R2 NAP-R3 AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 6 NNoorrtteell WWiirreelleessss MMeesshh NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P AAA Service DHCP Border Internet at large Service Service Gateway Policy Subscriber Enterprise / ISP Service Mgmt Service Backbone Firewall, Network NAT, etc. NOSS WG-1 WG-2 CAN-Alpha EEnntteerrpprriissee // IISSPP // MMeettrroo NAP-R1 DDiissttrriibbuuttiioonn NNeettwwoorrkk NAP-R2 NAP-R3 Enterprise/ISP/Metro Distribution Network • Carry IP traffic between Wireless Gateways (WG) and Network Access Point Routers (NAP-R). • May be a Layer 3 routed, or • May be a Layer 1 or Layer 2 transport domain AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 7 NNoorrtteell WWiirreelleessss MMeesshh NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P BBoorrddeerr Internet AAA Service DHCP GGaatteewwaayy at large Service Service Policy Subscriber Enterprise / ISP Service Mgmt Service Backbone Firewall, Network NAT, etc. NOSS WG-1 WG-2 CAN-Alpha Border Gateway Enterprise / ISP / Metro •NinAcPo-Rrp1orates all functions required to interface with the Internet-at-Large. Distribution Network • Advertises reachability to the Internet-at-Large for IP addresses assigned to WMN subscribers and neNtwAoPr-kR 2entities. NAP-R3 • May also provide connectivity for other, non-WMNEnterprise / ISP entities. • May also incorporate other inter-networking functions (e.g. NAT, firewall, redirection). • Has no knowledge of WMN-specific mobility and security functions. AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 8 NNoorrtteell WWiirreelleessss MMeesshh NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P AAA Service DHCP Border Internet at large Service Service Gateway Policy Subscriber Enterprise / ISP Service Mgmt Service Backbone Firewall, Network NAT, etc. NOSS WG-1 WWiirreelleessss GGaatteewwaayy CAN-Alpha Enterprise / ISP / Metro NAP-R1 Distribution Network NAP-R2 NAP-R3 Wireless Gateway • Advertises reachability (within Enterprise / ISP Distribution Network) for one or more IP subnets assigned to WMN subscribers and network entities. • Hides WMN-specific mobility and security functions from the rest of the Enterprise / ISP Distribution and Backbone Networks. AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 9 NNoorrtteell WWiirreelleessss MMeesshh NNeettwwoorrkk AArrcchhiitteeccttuurree OAM&P AAA Service DHCP Border Internet Service Service Gateway at large Policy Subscriber Enterprise / ISP Service Mgmt Service Backbone Firewall, Network NAT, etc. NNOOSSSS WG-2 Network Operations and Support Services • Centralised monitoring and managing network operations. CAN-Alpha • Interface to distributed elements of the WMN network through standard protocols I.e. DHCP, SNMP, RADIUS. Enterprise / ISP . Metro NAP-R1 Distribution Network NAP-R2 NAP-R3 AP = Wireless Access Point CAN = Community Area Network NAP-R = Network Access Point Router NOSS = Network Operations & Support Services CAN-Beta WG = Wireless Gateway CAN-Gamma WMN = Wireless Mesh Network 10