Agenda. Networking Intro MPLS Tech MPBN WAN MPBN Functionality Security Monitoring

Transcription

1

2 Agenda Networking Intro MPLS Tech MPBN WAN MPBN Functionality Security Monitoring

3 Where MPBN Functions : 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link 1 Physical Hub NIC Card

4 OSI Model (Open System Interconnection) 7 Application Softwares run on PC/MOBILE/Tablets such as : FireFox, COD, IE7, Google chrome

5 OSI Model (Open System Interconnection) 7 Application Softwares 6 Presentation Data representation (FORMAT) Ensures data is readable by receiving system Change between different formats such as : HTTP / HTTPS / JAVA / PNG / MP3

6 OSI Model (Open System Interconnection) 7 Application 6 Presentation 5 Session Softwares Data representation (FORMAT) Inter-host communication Establishes, manages, and terminates sessions between applications Logically keeps sessions separate

7 OSI Model (Open System Interconnection) 7 Application 6 Presentation 5 Session Softwares Data representation (FORMAT) Inter-host communication 4 Transport End-to-end connection reliability Data transport reliability (TCP / UDP) TCP reliable with ACK ( ) UDP Unreliable with no ACK (Viber) Fault detection and recovery Application separation based on ports ( HTTP 80 / HTTPS 443 ) Information flow control

8 OSI Model (Open System Interconnection) 7 Application 6 Presentation 5 Session Softwares Data representation (FORMAT) Inter-host communication 4 3 Transport Network End-to-end connection reliability IP Addressing Provides logical addressing (IP ) Find the best path to destination WAN connectivity

9 OSI Model (Open System Interconnection) 7 Application Softwares 6 Presentation 5 Session Data representation (FORMAT) Inter-host communication Transport Network Data Link End-to-end connection reliability IP Addressing Physical addressing (MAC) Provides reliable transfer of data across media (LAN) level Network topology, error notification, flow control

10 OSI Model (Open System Interconnection) 7 Application 6 Presentation 5 Session Softwares Data representation (FORMAT) Inter-host communication Transport Network Data Link Physical End-to-end connection reliability IP Addressing Physical addressing (MAC) Binary transmission ( ) Wires, connectors, voltages, data rates, signals

11 OSI Model Scenario

12 Dynamic Routing Protocols Distance Vector Protocols Internal Gateway Protocol (IGP) Link State Protocols External Gateway Protocol (EGP) RIPv1 OSPF BGP RIPv2 EIGRP CCNA By Anas Allosh IS-IS

13 Routing Protocols Distance Vector Protocols : (RIP / EIGRP / BGP) Calculate the best path to destination according to number of hops on the way i. A router learn about Networks from his neighbours only. ii. iii. iv. Routers only send to each other the best route to each network. Slower convergence when some link to a network fails. Loops may happen. v. Needs less processing from the router`s CPU Link State Protocols: (OSPF / IS-IS) Calculate the best path to destination according to Link state (speed / Throughput / Latency) i. Routers know about the whole Topology ii. iii. No loops can happen iv. Needs more processing from the router`s CPU Fast Convergence when some link to a network fails CCNA By Anas Allosh

14 MPBN WAN Topology (Mobile Packet Backbone Network)

15 MPLS >> Multiprotocol Label Switching MPLS directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. L2.5 Protocol MPLS VPN L3 usually the one used for Mobile Backhauling

16 MPBN Functionality What We Connect? Mobile Core Network ( MSCs BSCs HLRs MGWs ) Packet Core Network ( GGSN SGSN ) Charging / Billing Network Service Network (SMSC ) PoP Sites Traffic (in HSPA+) Operations and Maintenance Traffic Sigtran Traffic (SS7 Protocol) APN Network for special clients Roaming Traffic

17 Security Gi Firewall ( Internet) Gp Firewall (Roaming Traffic) SN Firewall (Service Network Traffic) Billing Firewall (Charging/Billing Systems) SRX 3600 Juniper Firewall subscriber sessions 55Gbps Data Throughput session per sec

18 Monitoring NetOp EMS Solar Winds

19 Packet core network

20

21 GPRS (General Packet Radio Service) is a packet based communication service for mobile devices that allows data to be sent and received across a mobile telephone network. GPRS is a step towards 3G and is often referred to as 2.5G.

22

23 Network elements Packet Control Unit(PCU) Serving GPRS Support Node (SGSN) Gateway GPRS Support Node(GGSN) Domain Name Servers Firewalls

24

25

26 Serving GPRS Support Node (SGSN) The SGSN is the most important element of the GPRS network. The SGSN of the GPRS network is equivalent to the MSC of the GSM network. There must at least one SGSN in a GPRS network. There is a coverage area associated with a SGSN. Authentication of GPRS users Mobility management as the subscriber moves from one area to another, and possibly one SGSN to another Interaction with the NSS (that is, MSC/VLR, HLR, EIR) via the SS7 network in order to retrieve subscription information

27

28 Gateway GPRS Support Node (GGSN) The Gateway GPRS Support Node is the last port of call in the GPRS network before a connection between an ISP or corporate network s router occurs Allocates dynamic or static IP addresses to mobiles

29 Domain Name Servers These devices convert names to IP addresses, almadar using domain name serves to convert APN to IP addressee.

30

31