IPv6 Static Route 2

By certskills July 25, 2016 09:05


IPv6 routing has many similarities with IPv4 routing; however, the length of the IPv6 addresses can sometimes get in the way of learning the main concepts. This next lab removes those barriers with a straightforward IPv6 static route configuration lab. All the IPv6 addresses and subnets are purposefully short (when abbreviated). Enjoy!


This lab uses a network topology with four routers and five IPv6 subnets. Each router connects to two subnets. Your job: add static IPv6 routes so that all routers have routes to all five IPv6 subnets, and that all the PCs in the figure can ping each other. The specific rules for this lab are:

  • None of the routers use a dynamic routing protocol.
  • Use global unicast addresses as next-hop, rather than link local addresses.
  • Assumptions:
    • All router interfaces shown in the lab are up, working, and have correct IPv6 addresses assigned.
    • All PCs have been configured appropriately based on the IPv6 subnet to which they are connected, respectively.

Figure 1: Four Routers and Five Switches

Initial Configuration

Examples 1, 2, 3, and 4 show the beginning configuration state of R1, R2, R3, and R4. All five switches are layer 2 switches with all default configuration, which places all interfaces on the same switch into VLAN1.

Example 1: R1 Config


Example 2: R2 Config


Example 3: R3 Config


Example 4: R4 Config


Answer on Paper, or Maybe Test in Lab

Next, write your answer on paper. Or if you have some real gear or other tools, configure the lab using them.

If you do implement the entire network in a lab, you can test the solution by going to each PC and pinging the other three. All the pings should work. Additionally, you could use an extended ping command to ping from each router’s G0/2 interface to each other router’s G0/2 interface IP address. For instance, from R1, the command ping 2004::1 source 2001::1 would test the forward route to R4’s G0/2 subnet, and the reverse route back to R1’s G0/2 subnet.

Do This Lab with Cisco’s VIRL

You can do these labs on paper and still get a lot out of the lab. As an extra help, we have added files for the Virtual Internet Routing Lab (VIRL) software as well. The .VIRL file found here is a file that when used with VIRL will load a lab topology similar to this lab’s topology, with the initial configuration shown in the lab as well. This section lists any differences between the lab exercise and the .VIRL file’s topology and configuration.

Download this lab’s VIRL file!

The virl topology matches this lab topology exactly. The host info does as well.

Host device info:

This table lists host information pre-configured in VIRL, information that might not be required by the lab but may be useful to you.


IP Address














Handy Host Commands:

To see PC IP address: ifconfig eth1

Ping example: ping -c 4

Trace example: tracepath

To connect to another node within the topology: telnet

Answers: IPv6 EUI-64 Addressing 1
By certskills July 25, 2016 09:05
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