Data-Centric Network (Unit 2)

Components of Enterprise

Campus Network
Private WAN
Remote Access
Internet server farm
Extranet server farm
Intranet server farm

Data Center Layers

Aggregation - Multilayer, switches, firewall & load balancers.
Access - Layer 2 connectivity between server farm and server functions.
Front End Segment - Protocols (SMTP), Telnet, web servers, etc.
Application Segment - Layer 2 connectivity for security policies and firewalls.
Backend Segment - Deals with segment storage and connections to database and server.
Storage Layer - Server storage and consolidation and communication between them.
Transport Layer - Bandwidth, transport protocols like SONET, cabling, and network, etc.

Architecture Models

Client Server Model
N-Tier model
Multitier Architecture

Data Center Services

IP Infrastructure

Manual or static routing - Manually configuring the entire routing table.
BGP - Inter-domain protocols are run for routing.
IGPs
OSPF - Intra-domain routing protocols followed.
EIGRP

Application

Load-balancer - To reduce failure of a certain node due to failure.
SSL - Encryption, and security.

Security

Firewalls
ACLs
Layer 2 & 3 Security Features.

Storage
Business Continuation

Site selection
SAN extension
DC interconnectivity

TOR & EOR

Power Reduction

Energy usage monitor - ASHARE Standards for robust energy usage.
Optimize air supply - Using cold air currents to cool down heated rooms.
Optimize CRAC - Energy saving based electrical equipment.
Separate hot & cold air - Eliminates mixing of the 2 currents being unutilized.
Improve underflow air pressure - Removing underflow blockades lead to efficient energy usage.
Improve CRAC - Replace old CRAC equipment with new ones.
Improve transformers - For better electricity utilization.
Improve Lighting - To ensure lesser mishaps.

Cable Management

Access Aggregation Connections
Looped Triangle
Looped Square
Looped Free U
Looped Inverted Free U

TIA-942 Standard

Data Center Spaces
Cabling
Electrical
Cooling
Tier System