This topic lists the Cisco IOS commands that are necessary to monitor BGP local preference.
Although local preference is not a mandatory attribute, it is applied to every route. When you are using the show ip bgp command, a locally applied default value is not shown. All other values are displayed. You should use the show ip bgp prefix command to also display the locally applied value.
The output that is displayed from show and debug commands will vary depending on the Cisco IOS version. Newer versions typically display more information. In Cisco IOS Software Release 12.0 and in later versions, enabling debugging of incoming routing updates will also display the local preference attribute.
© 2005, Cisco Systems, Inc. Route Selection Using Attributes 4-31
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