By Paul Fischer
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Extra resources for Configuring Cisco Routers for ISDN
Sample text
The low-speed link will therefore serve as backup to the high-speed WAN link. © 2005, Cisco Systems, Inc. , for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. ) • Prepend the AS path with the AS number of the sender, not the AS number of the receiver. © 2005 Cisco Systems, Inc. All rights reserved. 2—4-9 When you are manually manipulating AS paths, the only valid AS number that you can prepend is the AS number of the sender.
The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. ) All values for local preference are displayed in the show ip bgp prefix printout. © 2005 Cisco Systems, Inc. All rights reserved. 2—4-17 Use the show ip bgp prefix command to see more detailed information about a specific network, including the locally applied default local preference. In this example, there are three paths to reach the same network: The first path is external and was received from router RTR-C.
2—4-15 Every physical connection also includes a BGP session. All monitoring and troubleshooting commands were used on router RTR-A. RTR-A has one internal and two external neighbors. RTR-B is setting local preference 100 for all updates, and RTR-A is setting a default local preference (value 60) for all external updates except for those coming from router RTR-D, where a route-map is used to set a local preference of 90. The following pages show the output of show and debug commands on router RTR-A.