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HCIP-Datacom Core lab 11 of 14

VRRP and BFD

Share a LAN between two gateways with two VRRP groups, watch the uplink with interface tracking and BFD, tie OSPF to BFD, and prove that BFD catches a failure interface tracking misses.

Run this lab

It needs Standard: its 7 nodes are set to 8 vCPU and 11,264 MB in total.

In your workspace: Shared, then HCIP-Datacom Core H12-821 guided labs, then 11 - VRRP and BFD

Run it on Standard from £5 a day

The free demo can’t run it: it has 6 vCPU and 8 GB, and this lab’s nodes need 8 vCPU and 11,264 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 80 minutes
Nodes need
8 vCPU, 11,264 MB
Smallest plan
Standard

The scenario

The Cardiff office has two gateways, R1 and R2, on one LAN, and they should share the load: half the PCs through each, each backing up the other. Uplinks run to R3 through a carrier's Ethernet service, so a failure in the middle doesn't take the local port down. The office lost two hours to exactly that last year: the port stayed up and nothing moved. You're building a design that notices in under a second.

DeviceAddresses
R1GE0/0/0 192.168.10.1/24, GE0/0/1 10.0.13.1/24, LoopBack0 1.1.1.1
R2GE0/0/0 192.168.10.2/24, GE0/0/1 10.0.23.2/24, LoopBack0 2.2.2.2
R3GE0/0/0 10.0.13.3/24, GE0/0/1 10.0.23.3/24, GE0/0/2 192.168.30.1/24, LoopBack0 3.3.3.3
VRRPGroup 1: 192.168.10.254. Group 2: 192.168.10.253
HostsPC1 192.168.10.11 (gateway .254), PC2 192.168.10.12 (gateway .253), PC3 192.168.30.10 (gateway .1)

SW1 is a plain Layer 2 switch: all its ports are in VLAN 1, and it needs no setup beyond its name.

What you’ll practise

  • Configure VRRP groups with priorities and pre-emption
  • Share load between two gateways with two groups
  • Build a static BFD session with discriminators and read its state
  • Make OSPF use BFD for fast detection
  • Make VRRP follow a BFD session
  • Prove a failover with a real path failure

The tasks

  • Task 0: Load the starting configuration
  • Concept: VRRP
  • Task 1: Build two VRRP groups
  • Concept: BFD
  • Task 2: Build a static BFD session from R1 to R3
  • Concept: making protocols listen
  • Task 3: Let OSPF use BFD on the R2 side
  • Task 4: Make VRRP follow BFD
  • Task 5: Prove it with a failure in the middle

The Lab Tasks pane has the scenario, these tasks, the checks to run, hints and the full solution.

Topology and devices

The network as it opens in EVE-NG, drawn from the lab’s own canvas, and the image each node runs.

Topology of VRRP and BFD7 nodes, 7 links. Every link is listed as text below the diagram.SW1R1R2R3PC1PC2PC3GE0/0/2eth0GE1/0/2eth0GE1/0/3eth0GE1/0/0GE0/0/0GE1/0/1GE0/0/0GE0/0/1GE0/0/0GE0/0/1GE0/0/1
7 nodes, with the interface names each link uses.
Every link, as text
  • SW1 GE1/0/0 to R1 GE0/0/0
  • SW1 GE1/0/1 to R2 GE0/0/0
  • SW1 GE1/0/2 to PC1 eth0
  • SW1 GE1/0/3 to PC2 eth0
  • R1 GE0/0/1 to R3 GE0/0/0
  • R2 GE0/0/1 to R3 GE0/0/1
  • R3 GE0/0/2 to PC3 eth0
Nodes in VRRP and BFD, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
SW1Huawei CloudEngine CE6800huaweice6800-bundled2 vCPU, 2,048 MB
R1Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
R2Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
R3Huawei AR1000V routerhuaweiar1k-5.170-V300R022C00SPC100-Auto-update-esn1 vCPU, 2,048 MB
PC1VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 MB
PC2VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 MB
PC3VPCS hostBuilt in to EVE-NGCounted as 1 vCPU, 1,024 MB

How to open this lab

  1. Sign in to your workspace at lab.cloudlabbox.com.

  2. In File Manager, open Shared, then the folder HCIP-Datacom Core H12-821 guided labs.

  3. Open 11 - VRRP and BFD and start its nodes, then open Lab Tasks for the scenario and the steps.

The lab is read-only. You can start the nodes and configure the devices, but changes to the topology can’t be saved. To change it, rebuild it in your own folder.

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CloudLabBox is independent of Huawei. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.