Router C only announces the aggregate 160.0.0.0/8 to Router D. This action occurs because you have configured the summary-only argument on Router C. !- The network is summarized, and Router C only These sample configurations enable you to examine this feature and how this argument helps BGP detect and avoid loops. This as-set argument summarizes the AS_PATH attributes of all the individual routes. Use of the as-set argument creates an aggregate address with a mathematical set of autonomous systems (ASs). Refer to Cisco Technical Tips Conventions for more information on document conventions. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment.
#Summary route calculator software
However, the configuration in this document was tested with Cisco IOS ® Software Release 12.2(28). This document is not restricted to specific software and hardware versions. Prerequisites RequirementsĬisco recommends that you have knowledge of these topics:Ī basic knowledge of BGP operation.
#Summary route calculator how to
This document illustrates how to manipulate the different attributes when you use the aggregate-address command and how to influence the propagation. When you issue the aggregate-address command without any arguments, there is no inheritance of the individual route attributes (such as AS_PATH or community), which causes a loss of granularity. Border Gateway Protocol (BGP) allows the aggregation of specific routes into one route with use of the aggregate-address address mask command.
0 kommentar(er)
