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所在平台: Udemy |
课程主页: https://www.udemy.com/course/policy-based-routing-pbr-by-arash-deljoo/
课程评论：没有评论
课程名称：基于策略的路由（PBR） 授课老师：Arash Deljoo 课程概述： 基于策略的路由（PBR）是通过使用路由图指定除目标之外的其他属性，然后根据这些条件定义路由器的出接口的过程。使用PBR，网络管理员可以根据特定参数选择策略，例如： - 源地址或目标地址 - 源端口或目标端口 - 流量类型 - 网络协议 - 数据包大小 - 访问列表 一旦确定了这些参数，数据包就会根据这些条件进行路由。这使得网络的灵活性得以提高。通过定义路由策略，基于应用程序的属性，管理员可以实施特定的流量管理策略，从而控制数据包的转发方式，优化对最重要应用程序的带宽使用。 PBR被视为路由信息库（RIB）的一个例外，在检查RIB之前会先考虑PBR。这允许更多的路由选择。例如，在用于PBR的路由图中，可以根据访问控制列表（ACL）进行匹配，然后匹配源地址、目标地址、协议类型和/或端口号。此外，还可以基于以下内容进行匹配： - 服务质量（QoS）标记，如互联网协议（IP）优先级或区分服务代码点（DSCP） - 数据包大小，能够根据数据包的大小将数据发送到预定位置 一旦匹配成功，您还可以设置下一个跳跃设备的地址和/或出接口。同时，可以设置QoS值，以确保应用程序获得所需的资源，以便正常运行。 该课程旨在帮助学员掌握基于策略的路由技术，提高网络管理能力和流量优化能力。
PBR is the process of using a route map to specify an attribute other than the destination and then define the path out of the router based on those conditions.With PBR, a network administrator can select policies according to specific parameters, such as:• The IP address of the source or the destination• The port of the source or destination• The kind of traffic• Network protocols• The sizes of data packets• An access listOnce parameters like these are established, the data packets get routed accordingly. This empowers you to increase the agility of the network.Because you can define your routing strategy using the attributes of applications, you can execute specific traffic-management policies that control how packets get forwarded.In this way, you can optimize how bandwidth gets used by your most important applications.PBR is considered to be an exception to the routing information base (RIB) and is looked at before examining the RIB. This allows for more routing options.For example, within the route map used for PBR, you can match on an access control list (ACL) that then matches on source, destination, protocol type, and/or port numbers.You can also match on:• Quality of service (QoS) marking, such as Internet Protocol (IP) precedence or differentiated services code point (DSCP)• The size of the packets, effectively enabling you to send data where you want it to go based on how big or small its packets areOnce you have a positive match, you can then set the next hop device's address and/or egress interface. You can also set QoS values at the same time, which enable you to ensure an application gets the resources it needs to function as well as you need it to.
