- 10 Maggio 2022
- Posted by: treninocattolica
Contract Scope: Understanding Cisco ACI
If you are a network administrator, you are probably already familiar with Cisco ACI, or Application Centric Infrastructure. Cisco ACI is a software-defined networking (SDN) solution that provides a centralized infrastructure for managing network devices, virtualization, and application deployment. However, understanding the contract scope of Cisco ACI can be a bit more complex. In this article, we will take a closer look at the contract scope of Cisco ACI and what this means for your organization.
What is a Contract Scope?
Before we jump into the specifics of Cisco ACI, let`s first define what we mean by contract scope. A contract scope is a set of rules that govern how traffic flows between applications or endpoints. Think of it as a traffic cop giving directions to drivers. In the same way, a contract scope sets the rules for traffic flow between different parts of a network. It helps to ensure that data is transferred correctly and securely, and that network resources are used efficiently.
In Cisco ACI, a contract scope is created by defining a set of rules that apply to traffic flowing between two endpoint groups (EPGs). An EPG is a group of devices or applications with similar network requirements. A contract scope can be created between two EPGs within the same tenant or between EPGs in different tenants.
Understanding the Components of a Contract Scope
To understand the contract scope of Cisco ACI, it`s essential to understand its components. The following components make up a contract scope in Cisco ACI:
1. Filters: Filters determine what traffic is allowed or denied by the contract scope. They are used to match specific traffic based on fields such as source and destination IP addresses, port numbers, and protocols.
2. Actions: Actions determine what happens to the traffic that`s matched by the filter. The two most common actions in Cisco ACI are allow and deny. However, you can also use other actions, such as redirect, to send traffic to a different location.
3. Subjects: Subjects group filters and actions together. They allow you to create a logical grouping of rules that are applied to traffic flowing between EPGs.
4. Contracts: Contracts are a collection of subjects. They are used to define the relationship between two EPGs. Each contract is associated with a tenant, and it can contain multiple subjects.
Using Contract Scope in Cisco ACI
Now that we`ve defined what a contract scope is and what its components are let`s look at how it`s used in Cisco ACI. The contract scope in Cisco ACI is used to govern traffic flow between EPGs. It allows network administrators to control how traffic is routed and what resources are used.
The contract scope is created by using the Cisco Application Policy Infrastructure Controller (APIC). The APIC is a web-based user interface that provides a centralized console for managing the Cisco ACI infrastructure.
Creating a contract scope in Cisco ACI involves the following steps:
1. Define the EPGs that need to communicate.
2. Create a contract that includes a set of subjects that define the rules for traffic flow between the EPGs.
3. Apply the contract to the EPGs that need to communicate.
Once the contract scope is created, traffic flow between the EPGs is governed by the rules defined in the contract. The contract scope ensures that only authorized traffic is allowed to pass between EPGs, and that network resources are used efficiently.
Contract scope is a critical concept in Cisco ACI. It allows network administrators to manage traffic flow between EPGs. By defining a set of rules that govern traffic flow, network administrators can ensure that network resources are used efficiently and that data is transferred securely. Understanding the components of a contract scope and how to create one in Cisco ACI is essential for anyone responsible for managing a network.