Lab Objective:
The objective of this lab exercise is for you to learn and understand how to implement and verify internal and external BGP peering solutions in Cisco IOS software.
Lab Topology:
| IMPORTANT NOTEIf you are using the www.howtonetwork.org racks, please bring up the LAN interfaces connected to the routers by issuing the no shutdown command on the connected switches. If you are using a home lab with no Switches, you can bring up the LAN interfaces using the following configurations on your routers:
interface fastethernet 0/0 Alternately, you can simply connect the interfaces to a hub if you have one. |
Task 1
Configure IP addressing on all routers as illustrated in the topology. Additionally, configure the following the following Loopback interfaces on all routers:
|
Router |
Loopback |
Loopback Interface Address/Mask |
|---|---|---|
|
R1 |
0 |
1.1.1.1/32 |
|
R1 |
1 |
190.1.1.1/24 |
|
R2 |
0 |
2.2.2.2/32 |
|
R2 |
1 |
190.2.2.2/24 |
|
R3 |
0 |
3.3.3.3/32 |
|
R4 |
0 |
4.4.4.4/32 |
Task 2
Configure BGP on routers R1 and R2 as follows:
- R1 should reside in AS 111 while R2 should reside in AS 222
- The routers should peer with each other using their 10.0.0.0/30 addresses
- Statically configure the router ID using the Loopback 0 address
- Both routers should advertise their respective 150.x.x.x subnets via BGP
- Both routers should also advertise the 190.x.x.x subnets via BGP
Task 3
Configure BGP on routers R3 as follows:
- The router should reside in AS 333
- USE PEER GROUPS FOR YOUR BGP CONFIGURATION ON R3
- The router should peer with both R1 and R2 using their Loopback addresses
- Statically configure the RID using the Loopback 0 interface address
- Advertise the 150.3.3.0/24 subnet via BGP
- Verify that R3 can ping the 150.x.x.x and 190.x.x.x subnets
- Verify that R1 and R2 can ping the 150.3.3.0/24 subnet
Task 4
Configure OSPF between R3 and R4 as follows:
- Enable OSPF for the 10.0.0.12/30 subnet between the two routers
- Advertise the Loopback interfaces via OSPF
- Both routers should reside in OSPF area 0 (the backbone)
- Redistribute the 150.4.4.0/24 subnet into OSPF on R4
Task 5
Configure your network so that R4 has routes to the 150.x.x.x and 190.x.x.x subnets that are advertised by AS 111 and AS 222. Also configure your network so that R4 has a route to the 150.3.3.0/24 that is advertised by R3.
Task 6
Advertise the 150.4.4.0/24 subnet received by R3 from R4 to external BGP peers R1 and R2. This prefix should be redistributed into BGP on R3.
Task 7
Configure your network so that R4 can ping the 150.x.x.x and 190.x.x.x subnets advertised by R1 and R2. Also ensure that R1 and R2 can ping the 150.4.4.0/24 subnet. You are allowed to use only ONE static route in your configuration to complete this task. In addition to this, do NOT configure any additional route redistribution to complete this task.