Lab
9.5.4 Inject Information into BGP (Redistribution)
Objectives:
Inject routes from an IGP into BGP
using redistribution.
Scenario:
AS 200 is receiving Internet
connectivity from AS 100. AS 100 is using RIP as its IGP. Router C is
not running BGP but networks 192.68.10.0 and 192.68.11.0 need to be
advertised to AS 200. You have decided to use redistribution to make
this a reality.
Notes:
In some situations, Router A may choose
to access network 4.0.0.0 via 2.0.0.0. If this is the case, when you
reach step 7 in the lab, set the metric to 100 on Router B and 50 on
Router C. Before starting the lab, verify the route taken by using a
trace and/or examining the routing table.
Tasks:
Cable the network and address all interfaces as shown in the
above diagram.
Configure RIP routing between Router B and C. Do not send RIP
updates to AS 200. What command allows you to stop RIP updates
from going to AS 200?
Configure BGP between Router A and Router B. Allow BGP to
advertise network 10.0.0.0 with the network command.
Examine the routing table of Router A. What routes do you see
that are advertised via BGP? Can you ping any networks in AS 100? If not, do you know why?
Time to fix the problems identified in steps 4 and 5. We need to
advertise the RIP networks via BGP. This is done by a process
called redistribution, which is described in the curriculum. You
will need to issue the following command on Router B: