Lab Objective:
The focus of this lab is to understand Gateway Load Balancing Protocol (GLBP) implementation and configuration in Cisco IOS routers. Additional technologies include GLBP load balancing.
Lab Topology:
The lab network topology is illustrated below:
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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 or switch if you have one available in your own lab. |
Task 1
Configure hostnames, IP addressing on all routers as illustrated in the network topology.
Task 2
Configure EIGRP as illustrated in the topology. Redistribute the LAN subnets into EIGRP.
Verify your configuration using the appropriate commands on all routers in the network.
Task 3
Configure GLBP on R1, R2, and R4. Ensure that R1 is elected AVG. R2 should be standby. The gateway IP should be 150.1.1.254. Verify your configuration using the appropriate commands.
Task 4
Configure load balancing for GLBP so that traffic is distributed between R1, R2 and R4 using a ratio of 50:30:20. Configure weighting thresholds on R1 as follows:
- Should R1s weighting value fall below 30, it should give up its role as a Virtual Forwarder
- When R1s weighting value rises above 45, it should assume its role as a Virtual Forwarder
- Should R1s weighting value fall below 20, it should give up its role as a Virtual Forwarder
- When R1s weighting value rises above 25, it should assume its role as a Virtual Forwarder
R4 should use default thresholds. Verify your configuration using the appropriate commands.
Task 5
Configure Cisco IOS IP SLA Operations on R1 and R2 that ping the connected WAN interface to R3. Should R1s WAN link go down, its weight should be reduced to 25. Should R2s WAN link go down, its weighting value should be reduced to 15. Verify your configuration using the appropriate commands. Next, test the configuration by shutting down R1s WAN link and then checking the GLBP status on R1, R2 and R3. Next, with R1s WAN interface still disabled, shut R2s WAN interface and check the GLBP status on R2 and R4.