Last Updated on August 1, 2021 by Admin 2
Which of the following primary elements of a tenant can be of type regular, taboo, or OOB?
- a bridge domain
- a contract
- an EPG
- a filter
A contract is the primary element of a tenant that can be of type regular, taboo, or out-of-band (OOB). Contracts are policy objects that define how endpoint groups (EPGs) communicate with each other. There are three types of contracts that can be applied in a Cisco Application Centric Infrastructure (ACI) fabric:
– Regular – applies filters to matching traffic and typically follows taboo contracts
– Taboo – denies and logs matching traffic
– OOB – applies to OOB traffic from the management tenant
Tenants are containers that can be used to represent organizations, domains, or specific groupings of information. Typically, tenants are configured to ensure that different policy types are isolated from each other, similar to user groups or roles in a role-based access control (RBAC) environment.
A bridge domain is a primary element of a tenant; however, a bridge domain is not of type regular, taboo, or OOB. Bridge domains are logical Layer 2 forwarding configurations within a Cisco ACI fabric that use switched virtual interfaces (SVIs) for gateways and can be configured to span multiple physical devices. In this respect, bridge domains are similar to virtual local area networks (VLANs). However, the purpose of a bridge domain is to define the Media Access Control (MAC) address space and flood domain.
An EPG is a primary element of a tenant: however, an EPG is not of type regular, taboo, or OOB. EPGs are logical groupings of endpoints that provide the same application or components of an application. For example, a collection of Hypertext Transfer Protocol Secure (HTTPS) servers could be logically grouped into an EPG labeled WEB. EPGs are typically collected within application profiles. EPGs can communicate with other EPGs by using contracts.
A filter is a primary element of a tenant; however, a filter is not of type regular, taboo, or OOB. Filters are low-level ACI objects that help define EPG contracts. Filters operate at Layer 2, Layer 3, and Layer 4 of the Open Systems Interconnection (OSI) networking model.