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First of all you must configure BGP router with
command. To configure BGP router, you need AS number. AS number is an
identification of autonomous system. BGP protocol uses the AS number
for detecting whether the BGP connection is internal one or external one.
AS number is a digit between 1 and 65535. The use of AS numbers is described in RFC1930. AS numbers 64512 through 65535 are defined as private AS numbers. Private AS numbers must not to be advertised in the global Internet.
BGP Commands. You can not create different BGP process under different as-number without specifying
multiple-instance(see section 9.12.1 Multiple instance).
zebrait gets interface and address information. In that case default router ID value is selected as the largest IP Address of the interfaces. When
router zebrais not enabled
bgpdcan't get interface information so
router-idis set to 0.0.0.0. So please set router-id by hand.