Verify BGP operation by using the key show
commands listed in Figure .
If the router has not installed the
BGP routes expected, use the show
ip bgp command to verify that
BGP has learned these routes.
Note that the output of this command
includes the BGP table version number, which increments each time
the local router receives changed route information. The AS_Path,
among other key attributes, is also included in this table. Routes
that are deemed the best are denoted by the > character and are
installed in the router's IP routing table.
If an expected BGP route does not
appear in the BGP table, you can use the show
ip bgp neighbors command to
verify that your router has established a BGP connection with its
neighbors.
The most important information output
of this command is the BGP state that exists between the
neighbors. Anything other than "Established" indicates
that the peers are not fully communicating.
The show
ip bgp neighbors command
supports a number of optional parameters and uses the following
syntax shown in Figure .
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