Cisco S3C8 Network Management

Documentation diagrams that indicate the path of the physical wiring layout; the type of cable; the length of each cable; the type of termination for the cable; physical location of each wall plate or patch panel, and; a labeling scheme for easy identification of each wire.

Documentation Also includes: –Layout of MDF –Layout of IDF –Physical layout of rack mounts –Auxiliary equipment & servers –Patch panel labels –Identification and configuration of all equipment in MDF and IDF

Documentation Also includes: –Server and workstation configuration details –Physical location –User –Network ID – IP address, MAC address –Subnet, Topology; IRQ, SMA –Software installed –O/S –Repair Record

Documentation / Security Soft –User rights, password, firewall support Hard –Locking MDFs and IDJs –Who has access to MDF and IDF –How hosts are protected –Who has physical access to system Documentation needs to be updated

Data Recovery UPS, Tape Backup, and Disk Arrays –Full, incremental, differential, copy and daily –Tape backup is cheap Sequential Storage Archive Bit –Allows for INCREMENTAL backup Only backup what has changed since last backup date

Disk Redundancy Raid 0stripes data across multiple disks, no parity Raid 1disk mirroring – disk duplexing – writes data to two identical partitions Raid 2writes across multiple disks with error checking Raid 3stripes data one byte at a time- dedicated parity drive Raid 4stripes one sector at a time- dedicated parity drive Raid 5stripes data and parity across multiple disks

Environmental Factors Static Contaminants – smoke, dust and dirt Heat – high temperatures Protection –Isolate transformers; use regulators and line conditions and UPS

Viruses Wormpropagates itself Virusinfects files Trojan disguised as a game, utility or application –Know where software came from –Don’t use unknown disks –Use current virus checker

Network Types Peer-to-peer –Workgroup network Small number of workstations –W95 W98 Lantastic –10 workstations Client Server –Controlled by a NOS (Network Operating System Unix –NFS security, multitasking, kernel, supports many users

Network Control User rights Account numbers Passwords Access

Baseline Measurements Bandwidth used Collisions Broadcast traffic

Scientific Method – Trouble Shooting 1. Identify network/user problem. 2. Gather data about network/user problem. 3. Analyze data to come up with a possible solution to the problem. 4. Implement solution to network to attempt correction to the system. 5. If the problem isn't resolved, undo previous changes and modify data. 6. Go to step 3