1 Chapter 3: Multiprotocol Network Design Designs That Include Multiple Protocols IPX Design Concepts AppleTalk Design Concepts SNA Design Concepts

2 IPX, AppleTalk, and SNA Protocols

3 Multiprotocol Design Requirements and Constraints Internetwork Packet Exchange (IPX) networks AppleTalk networks Systems Network Architecture (SNA) networks

4 Design Considerations IPX IPX network number addressing IPX frame types Methods for securing data AppleTalk Network numbers or network number addressing range Zones SNA Mainframe connectivity requirements Network segments, routers, Media Access Control (MAC)– layer bridges, or source routing bridges

5 IPX in Multiprotocol Designs

6 AppleTalk in Multiprotocol Designs

7 SNA in Multiprotocol Designs

8 IPX Addressing

9 Determining IPX Frame Types Microsoft Windows automatic detection Frame types Direct hosting Implementation considerations

10 Connecting IPX Integrate IPX into IP networks with Point-to- Point Tunneling Protocol (PPTP) or Layer 2 Tunneling Protocol (L2TP). Protect IPX data by using virtual private network (VPN). Use Microsoft Proxy Server 2.0 for IPX to IP gateway.

11 AppleTalk Addressing Similar to IP addressing Network number Node ID Considerations Base network number range on expected number of nodes. Allow for network expansion. Assign unique network numbers.

12 AppleTalk Zones Allow users to find resources Should be based on logical divisions Should use smallest possible number of zones

13 SNA Networks Data Link Control (DLC) is the most common SNA protocol. DLC uses source routing bridges or MAC-layer bridges. Using SNA gateways reduces the number of network segments that require DLC.

14 SNA and TCP/IP Integration Reduces network traffic Offers integration choices Use gateway such as Microsoft SNA Server. Install TCP/IP on devices.

15 Chapter Summary Microsoft Windows 2000 supports IPX, AppleTalk, and SNA. Organizational requirements and constraints should be collected first for IPX AppleTalk SNA