Network Management Basics
Policy Management Basics
Need for Policy
Poicy management iis mast important one, Which coming under
Aligning Network Resources with Business Objectives
- Application-aware network
- Intelligent network services
- Network-wide service policy
- Control by application & user
What Is a Network Policy?
The network Plicy is a set of high-level
business directives that control the deployment of network
services (e.g., security and QoS). And areated on the basis
and in terms of established business practices
Example: Allow all members of the Engineering
department access to corporate resources using Telnet, FTP,
HTTP, and e-mail, 24 x 7
Role of QoS
Quality of service should be used wherever
applications share network resources.
There are two broad application areas where QoS technologies
- Mission-critical applications need QoS to ensure delivery
and that their traffic is not impacted by misbehaving applications
using the network.
- Real-time applications such as multimedia and voice need QoS
to guarantee bandwidth and minimize jitter. This ensures the
stability and reliability of existing applications when new
applications are added.
Voice and data convergence is the first compelling application
requiring delay-sensitive traffic handling on the data network.
The move to save costs and add new features by converging
the voice and data networks--using voice over IP, VoFR, or
VoATM--has a number of implications for network management:
- Users will expect the combined voice and data network to be
as reliable as the voice network: 99.999% availability
- To even approach such a level of reliability requires a sophisticated
management capability; policies come into play again
Cisco’s unique service is the ability to offer products
that let network managers prioritize applications in today’s
Let’s take a look at QoS in more detail.