9.6 BGP Attributes  
  9.6.11 The Weight attribute  

The Weight attribute is similar to the Local Preference attribute in that it gives higher preference to the route that has a higher weight. The difference is that the weight parameter is local to the router and is not exchanged between routers. The weight parameter influences routes coming from different providers to the same router, one router with multiple connections to two or more providers. The weight parameter has a higher precedence than any other attribute. It is the most important attribute when determining route preference. The Weight attribute is a Cisco proprietary attribute.

The following paths with highest weight value are most desirable:

  • Weight configured on routers, on a per-neighbor basis
  • Weight attribute not sent to any BGP neighbors
 

Web Links

Configuring BGP

http://www.cisco.com/univercd/cc/td/doc/product/ software/ios122/122cgcr/fipr_c/ipcprt2/1cfbgp.htm