Which of the following “Technical Reports” are related to SLA and why? Circuit u

Question

Which of the following “Technical Reports” are related to SLA and why?

Circuit use

Usage rate of critical hardware such as host computers, front-end processors, and servers

File activity rates for database systems

Usage by various categories of clients computers

Response time analysis per analysis per circuit or per computer

Voice versus data usage per circuit

Queue-lenth description, whether in the host computer, in thefront-end processor or at remote site

Distribution of traffic by time of day, location, and type of application software

Failure rates for circuits, hardware, and software

Details of any network faults

Explanation / Answer

(a) “POP to POP Circuit Availability” means the availability of a Domestic Private Line DS-0, DS-1 or DS-3 level Circuit connecting two (2) Customer premises and is measured from the applicable New Edge Networks Points of Presence (POP) closest to the associated Customer premises.   
(b) “End to End Circuit Availability” means the availability of a Domestic Private Line DS-0, DS-1 or DS-3 level Circuit connecting two (2) Customer premises
Performance management means ensuring the network is operating as efficiently as possible whereas fault management means preventing, detecting, and correcting faults in the network circuits, hardware, and software (e.g., a broken device or improperly installed software). Fault management and performance management are closely related because any faults in the network reduce performance. Both require network monitoring, which means keeping track of the operation of network circuits and devices to ensure they are functioning properly and to determine how heavily they are used.

A Day in the Life: Network Policy Manager

All large organizations have formal policies for the use of their networks (e.g., wireless LAN access, password, server space). Most large organizations have a special policy group devoted to the creation of network policies, many of which are devoted to network security. The job of the policy officer is to steer the policy through the policy making process and ensure that all policies are in the best interests of the organization as a whole. Although policies are focused inside the organization, policies are influenced by events both inside and outside the organization. The policy manager spends a significant amount of time working with outside organizations such as the U.S. Department of Homeland Security, CIO and security officer groups, and industry security consortiums. The goal is to make sure all policies (especially security policies) are up-to-date and provide a good balance between costs and benefits.

A typical policy begins with networking staff writing a summary containing the key points of the proposed policy. The policy manager takes the summary and uses it to develop a policy that fits the structure required for organizational policies (e.g., date, rationale, scope, responsible individuals, and procedures). This policy manager works with the originating staff to produce an initial draft of the proposed policy. Once everyone in the originating department and the policy office are satisfied with the policy, it is provided to an advisory committee of network users and network managers for discussion. Their suggestions are then incorporated in the policy or an explanation is provided is to why the suggestions will not be incorporated in the policy.

After several iterations, a policy becomes a draft policy and is posted for comment from all users within the organization. Comments are solicited from interested individuals and the policy may be revised. Once the draft is finalized, the policy is then presented to senior management for approval. Once approved, the policy is formally published, and the organization charged with implementing the policy begins to use it to guide their operations.

Network Monitoring

Most large organizations and many smaller ones use network management software to monitor and control their networks. One function provided by these systems is to collect operational statistics from the network devices. For small networks, network monitoring is often done by one person, aided by a few simple tools (discussed later in this topic). These tools collect information and send messages to the network manager’s computer.

In large networks, network monitoring becomes more important. Large networks that support organizations operating 24 hours a day are often mission critical, which means a network problem can have serious business consequences. For example, consider the impact of a network failure for a common carrier such as AT&T or for the air traffic control system. These networks often have a dedicated network operations center (NOC) that is responsible for monitoring and fixing problems. Such centers are staffed by a set of skilled network technicians that use sophisticated network management software. When a problem occurs, the software immediately detects the problems and sends an alarm to the NOC.

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