Netgear XCM89UP Software Administration Manual Software Version 11.x - Page 196

Managed Switches Table 1. Special characters supported in AS_PATH regular expressions (continued) question ? mark underscore _ Matches 0 or 1 occurrences of the pattern. (Press Ctrl-V prior to pressing question mark to prevent it from being interpreted as a help command.) a?c matches ac and abc Matches a comma (,), left brace ({), The characters _1300_ can match any right brace (}), left parenthesis, right of the following strings: parenthesis, the beginning of the ^1300$ input string, the end of the input string, or a space. ^1300space space1300 {1300, ,1300, {1300} ,1300, This example does not include the steps for how to create an eBGP session. See Example 2: Create eBGP on Switches A and D on page 186 for the eBGP session configuration. Switch A is denied to all of the routes in which AS_PATH contains only 200 and permits others. (Netgear Switch)(Config) #ip as-path access-list 1 deny ^200$ (Netgear Switch)(Config) #ip as-path access-list 1 permit .* (Netgear Switch) (Config-router) #neighbor 172.126.1.2 filter-list 1 in Example 7: Filter Routes with Route Maps You can implement route filters with BGP route maps. BGP route maps are separated by PBR route maps. BGP route maps support the following filter list: • as-path • community • ip address prefix-list • ipv6 address prefix-list This example shows how to filter BGP routes with AS-PATH list. This example does not include the steps for how to create an eBGP session. See Example 2: Create eBGP on Switches A and D on page 186 for the eBGP session configuration. BGP 196 Software Administration Manual