Network Management
The following is from Network Implementation Design Analysis –
Burke, 2004, p 45
Checklist for network requirements:
Geographical Distribution
- Office
- Subnets
- LAN
- Department (many offices)
- Subnets
- LAN
- Division (many departments)
- LAN
- WAN
- Organization (many divisions)
- Local LAN/WAN
- National WAN
- Global WAN
Subnets
- How many
- bridges/switches
- routers
- Ethernet
- cabling
- speed
- IP addresses needed
- DHCP
- Wireless
- number of wireless hubs
- authentication
LAN
- How many of them
- Domain names
- DNS configuration
- IP address space
- Subnets / how many, subnet masks
- switched Ethernet v routers
- Other LAN technologies
WAN
- How sites connect
- PSTN, X.25, SONET, ATM, Frame Relay, Carrier Ethernet, etc
Bandwidth requirements
- Video needs
- Audio needs
- Data needs
Service Level Agreements
- bandwidth constantly available
- peak bandwidth
- bandwidth available on demand
- burst capacity
Security
- firewall configuration
- proxy servers
- authentication issues
- network intrusion detection
- virus/malware monitoring
Apply it to:
- a set of offices on 10 floors of one building
- a multi-city company with web servers
Table 3.2 from Burke, Network Management,
2004: this describes some of the data we want:
Reliability:
- transmission error rates
- dropped packets
- link failures
Faults
- proactive prevention
- detection
- location
- correction time
- link v node
Availability: MTBF
Performance (response time)
- processor total use
- interrupts/sec
- queue length
- etc
Throughput
- bytes per second we're actually achieving
- guaranteed throughput via our Service Level Agreement
Data packet throughput
Voice ordered packet throughput
Video bandwidth, ...
Utilization
- packets/sec
- transactions/sec
Resource use
- application software
- network devices (switches, routers, etc)
- services
- disk storage
- cpu
Policies
Redundancy
User support
Note that this table does NOT have any per-service entries!
Some software services:
- Windows Server Active Directory authentication
- Windows file sharing: file access time
- Web server
- database server
- integrated web/database
- DNS
- DHCP