Technology

Route Maps

It is a serious of match and set statements similar if-then statements in a programming language.

Facts about route maps

  • Used to set special BGP attributes to certain routes (local preference, weight, metric etc)
  • Used for Policy based routing – (example – assign routes specific to application)
  • Used for Route Filtering (like an access list)
  • A route map can have multiple match statements one after other. This means “AND” function is used
  • A route map match statement can be tagged with multiple access list in the same line. This means “OR” function is used

The following are some screen shots with various options:

1

In above screenshot – route-map TEST1 is created without any permit or deny operation. By default permit with sequence 10 is created. It means match all and permit all.

2

The above screen shot is list of match options in match statement*

3

The above is list of options in for set statement*

 

*Varies depending on IOS versions