1. CCNA 4 Module 6 Introduction to network Administration

2. CCNA 4 Module 6.1 Workstations and Servers

3. Copyright © 2005 University of Bolton System Definitions Server Workstation Diskless work station NOS network operating system A generic term used to refer to what are really distributed file systems. Examples of NOSs include LAN Manager, NetWare, NFS, and VINES.

4. Copyright © 2005 University of Bolton Client Server model Local host - The machine on which the user currently is working. Remote host - A system that is being accessed by a user from another system. Server - Provides resources to one or more clients by means of a network. Client - A machine that uses the services from one or more servers on a network.

5. Copyright © 2005 University of Bolton Microsoft O/S NT 4 Work Station NT 4 Server Windows 2000 Windows.NET server Windows XP Windows Vista Notice : Windows ME and Windows 98 do not support multiple users. –These were designed as home operating systems

6. Copyright © 2005 University of Bolton UNIX First marketed commercially for Network Servers, later it started to be used on workstations and mainframes Now the O/S of choice for large servers –configurable, secure, scalable, robust, efficient, powerful Linux refers to the UNIX variant that have evolved from the ‘open source’ community

7. Copyright © 2005 University of Bolton Apple Lovely in a tart with custard Popular with artists/designers/graphics people Consider a few virtues –Symmetric multiprocessing –Windows to apple talk connectivity –Protective memory –Pre-emptive multi tasking

8. CCNA 4 Module 6.1 Network Management

9. Copyright © 2005 University of Bolton SNMP Components NMS ( Network management station ) NMA ( Network management application ) –E.g Ciscoworks 2000 or HP Openview Management Agents –MIB ( Management Information Base –SMI ( Structure of Management Information ) Communication ( UDP ) –Get –Set –Trap RMON

10. Copyright © 2005 University of Bolton SNMP Messages The NMS can issue : –GetRequest –GetNextRequest –SetRequest The Agent will respond with : –GetResponse Agents can issue Traps

11. Copyright © 2005 University of Bolton SNMP Versions SNMPv1 –the initial protocol specification SNMPv2 –64 bit counters –GetBulkRequest SNMPv3 –Encrypted community string providing SECURE access to MIBs –Generally not supported but backwards compatible