Lab Objective:
The objective of this lab exercise is for you to learn and understand how to implement and verify branch and remote office redundancy solutions in Cisco IOS software.
Lab Topology:
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IMPORTANT NOTE If you are using the www.howtonetwork.net 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 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, also configure the following the following Loopback interface on R2:
|
Router |
Loopback |
Loopback Interface Address/Mask |
|---|---|---|
|
R2 |
0 |
192.0.2.254/32 |
Task 2
Configure a static default route on R1 pointing out of the Serial0/0 interface to R2. Verify that R1 can ping the 192.0.2.254 and 200.0.0.5 addresses following this configuration
Task 3
Configure BGP on R1 as R3 as follows:
- The routers should reside in AS 65001
- The routers should peer using their 10.0.0.4/30 interface addresses
- The routers should advertise their 10.x.x.x LAN subnets
- The routers should exchange Hello packets every 2 seconds
- The adjacency should be torn down after 6 seconds
Verify that both routers can ping the LAN subnet of the other
Task 4
Configure R3 to provide dynamic addressing information to LAN hosts as follows:
- Use a default gateway of 10.3.3.1
- Reserve addresses 10.3.3.1 – 10.3.3.5 for network and other devices, e.g. servers
- Use a domain name of howtonetwork.net
- DNS servers 10.1.0.253 and 10.1.0.254
- WINS server 10.1.0.254
- The client DHCP lease should expire after 8 days
Task 5
Assume that R2 belongs to an ISP. This link, however, will also be used as a backup link for access to the corporate LAN – 10.1.0.0/16 on R1, when the primary BGP connection is down. Based on these assumptions, configure R3 as follows:
- All Internet-bound traffic from the 10.3.3.0/128 subnet should be sent directly to R2
- All hosts on the 10.3.3.0/128 subnet to access the Internet
- Configure the backup Internet link to use OSPF to advertise the R1 and R3 LAN subnets
- Do NOT configure any static routes on R2 and do NOT configure OSPF on R2
Task 6
Ensure that BGP is used as the primary path; OSPF should be used only for backup
Task 7
With the primary and backup links up, verify your configuration as follows:
- Perform a LAN-to-LAN ping from R3 to 10.0.1.1 to verify connectivity to the hub site
- Perform a LAN-to-Internet ping from R3 to 192.0.2.254 to verify Internet connectivity
Task 8
With the primary link down, verify your backup link configuration as follows:
- Shut down the Serial0/1 link on R3. This will disable the primary link
- Perform a LAN-to-LAN ping from R3 to 10.0.1.1 to verify connectivity to the hub site
- Perform a LAN-to-Internet ping from R3 to 192.0.2.254 to verify Internet connectivity