Refer to the exhibit.
What effect will the as-path filter command that is configured on R4 create BGP routing table?
A.
It will have all three routes on the R4 BGP routing table
B.
It will have none of the three routes on the R4 BGP routing table.
C.
It will have only the route 30.30.1.0/24.
D.
It will have routes 40.40.1.0/24 and 200.200.6.6/32.
E.
It will have routes 30.30.1.0/24 and 200.200.6.6/32.
F.
It will have routes 30.30.1.0/24 and 40.40.1.0/24.
Explanation:
Configure BGP Route Filtering by Neighbor
You can filter BGP advertisements in two ways:
Use AS-path filters, as with the ip as-path access-list global configuration command and the
neighbor filterlist command
Use access or prefix lists, as with the neighbor distribute-list command.
Filtering using prefix lists is described in “Configuring BGP Filtering Using Prefix Lists”.
If you want to restrict the routing information that the Cisco IOS software learns or advertises, you
can filter BGP routing updates to and from particular neighbors. To do this, you can either define
an access list or a prefix list and apply it to the updates.
Note Distribute-list filters are applied to network numbers and not autonomous system paths.To filter BGP routing updates, use the following command in router configuration mode:
Note Although neighbor prefix-list can be used as an alternative to the neighbor distribute-list
command, do not use attempt to apply both neighbor prefix list and neighbor distribute-list filtering
to the same neighbor.http://www.cisco.com/en/US/docs/ios/12_0/np1/configuration/guide/1cbgp.html