Ever tried to convince a router that it’s speaking two languages at once?
You fire up Packet Tracer, punch in a few commands, and—boom—nothing shows up. The IPv4 address is there, the IPv6 address is nowhere in sight, and you’re left wondering if the whole lab is a prank.
Turns out, verifying IPv4 and IPv6 addressing in the Cisco Packet Tracer 13.Plus, it just takes a handful of checks, a sprinkle of patience, and the right mental model. 2 “6‑Packet” lab is a lot less mystical than it sounds. Below is the one‑stop guide that walks you through the why, the how, and the common slip‑ups that trip most students and hobbyists alike.
What Is “13.2 6‑Packet Tracer Verify IPv4 and IPv6 Addressing”?
In the Cisco Networking Academy curriculum, Lab 13.Worth adding: 2 focuses on configuring a small network of six devices—usually two routers, two switches, and two PCs. The “6‑packet” moniker comes from the six IP packets you’ll see traversing the topology once everything’s up and running.
The core goal? Get each device to own both an IPv4 address and an IPv6 address, then prove they’re reachable. In practice that means:
- Assigning IPv4 (the classic dotted‑decimal) to every interface.
- Enabling IPv6 (the colon‑separated) on the same interfaces.
- Using show commands to confirm the addresses are alive.
- Sending ping or traceroute packets for each protocol to verify end‑to‑end connectivity.
Think of it as a bilingual conversation: each device must be comfortable speaking both “English” (IPv4) and “Mandarin” (IPv6). If one side only knows English, the chat stalls Nothing fancy..
Why It Matters / Why People Care
Real‑world relevance
Most modern networks run a dual‑stack configuration—IPv4 for legacy apps, IPv6 for everything new. If you can’t verify both in a simulated environment, you’ll struggle when a real router throws a “no IPv6 address” error in production.
Lab grades and certifications
Cisco’s CCNA and CCNP exams love to ask “show the IPv6 address on interface X” or “verify connectivity using both protocols.” Nail this lab, and you’ve already practiced the exact steps you’ll repeat on the actual exam Most people skip this — try not to. That alone is useful..
Troubleshooting confidence
When you know the exact show commands and the typical output patterns, you can spot a missing address in seconds. That’s a huge time‑saver when you’re knee‑deep in a production outage And that's really what it comes down to..
How It Works (or How to Do It)
Below is the step‑by‑step workflow that most instructors expect. I’ve added a few extra notes that usually get left out of the official lab manual.
### 1. Build the topology
- Drag two Router‑2811 devices onto the workspace.
- Add two Switch‑2960 devices and connect each router to a switch with a copper straight‑through cable.
- Place two PC‑PT devices, each linked to a different switch.
Tip: Keep the device names simple—R1, R2, SW1, SW2, PC1, PC2. It saves you from typing long hostnames later Not complicated — just consistent. Which is the point..
### 2. Assign IPv4 addresses
On each router interface:
R1> enable
R1# configure terminal
R1(config)# interface g0/0
R1(config-if)# ip address 192.168.1.1 255.255.255.0
R1(config-if)# no shutdown
R1(config-if)# exit
R1(config)# interface g0/1
R1(config-if)# ip address 10.Still, 1 255. Day to day, 255. Which means 0. In practice, 0. 255.
Do the same on `R2`, swapping the subnets appropriately (`192.168.Now, 2. Plus, 1/24`, `10. 0.0.2/30`).
On the PCs, go to **Desktop → IP Configuration** and type the matching IPv4 address, subnet mask, and default gateway.
### ### 3. Enable IPv6 on the routers
IPv6 isn’t turned on by default. You need two things: **global IPv6 routing** and an address per interface.
```bash
R1(config)# ipv6 unicast-routing
R1(config)# interface g0/0
R1(config-if)# ipv6 address 2001:DB8:1::1/64
R1(config-if)# exit
R1(config)# interface g0/1
R1(config-if)# ipv6 address 2001:DB8:12::1/30
R1(config-if)# exit
Repeat on R2 with 2001:DB8:2::1/64 and 2001:DB8:12::2/30.
On the PCs, under Desktop → IPv6 Configuration, set the address manually (or enable Stateless Address Autoconfiguration if you’ve turned on DHCPv6, but the lab usually expects static) Not complicated — just consistent. And it works..
### 4. Verify the addressing
Now the fun part—checking that everything actually shows up.
IPv4 verification
R1# show ip interface brief
You should see g0/0 and g0/1 listed with the IPv4 addresses you entered, plus a status of up/up Easy to understand, harder to ignore..
On a PC, open the Command Prompt and type:
C:\> ipconfig
Look for the IPv4 address you set. If it says “Media disconnected,” double‑check the cable and the no shutdown command But it adds up..
IPv6 verification
R1# show ipv6 interface brief
You’ll get a table with the IPv6 addresses, link‑local (fe80::...) and the global ones you configured Not complicated — just consistent..
On the PC, open the terminal (or Command Prompt) and run:
C:\> ping -6 2001:DB8:2::1
If you get replies, the IPv6 path is alive.
### 5. Test end‑to‑end connectivity
IPv4 ping
From PC1:
C:\> ping 192.168.2.10 # PC2’s IPv4 address
You should see four successful replies.
IPv6 ping
C:\> ping -6 2001:DB8:2::10 # PC2’s IPv6 address
Again, four replies means you’ve got dual‑stack working end‑to‑end Still holds up..
### 6. Capture the “6‑packet” flow
Packet Tracer’s Simulation mode lets you watch the six packets (two pings for each protocol, one each direction). Click Add Simple PDU, choose ICMP, and hit Start Simulation Which is the point..
When the packets turn green, you’ve confirmed that the routers are correctly routing both IPv4 and IPv6 traffic Simple, but easy to overlook..
Common Mistakes / What Most People Get Wrong
| Mistake | Why It Happens | Quick Fix |
|---|---|---|
Forgetting no shutdown on an interface |
Newbies assume interfaces are up by default. | Always end the interface config with no shutdown. |
| Using the same IPv4 subnet on both router‑to‑router links | The lab expects a point‑to‑point /30 on the WAN side. | Double‑check the subnet mask (255.255.255.Practically speaking, 252). Worth adding: |
Typing ipv6 address without the prefix length |
IPv6 needs a / length; omitting it leaves the address incomplete. |
Add /64 (or /30 for point‑to‑point) after every IPv6 address. |
| Relying on DHCPv6 when the lab wants static | Packet Tracer’s DHCPv6 server isn’t always reliable. | Stick to static IPv6 addresses unless the lab explicitly says otherwise. |
| Overlooking link‑local addresses | Some people think only the global address matters. Think about it: | Remember that routers use link‑local (fe80::) to exchange routing updates. In practice, |
| Checking the wrong “show” command | show ip interface brief vs. Which means show ipv6 interface brief can be confusing. |
Keep a cheat‑sheet of the exact commands you need. |
Practical Tips / What Actually Works
- Save your work often – Packet Tracer can crash on large topologies. Use
File → Saveafter each major step. - Label cables – Right‑click a cable → Label. When you later troubleshoot, you’ll instantly know which link is which.
- Use
show running-config– A quick way to verify that both IPv4 and IPv6 statements are present on the same interface. - apply the “ping” shortcut – In the CLI, type
pingthen press Enter to get the interactive prompt; you can switch between IPv4 and IPv6 without leaving the router. - Don’t ignore the “line protocol” status – An interface can be “up” but “line protocol down” if the cable is mismatched (e.g., straight‑through vs. crossover).
- Document the IPv6 prefixes – Write them down on a sticky note or in a text file. It’s easy to mix up
2001:DB8:1::and2001:DB8:2::.
FAQ
Q: Do I need to enable IPv6 routing on both routers?
A: Yes. The command ipv6 unicast-routing turns on the IPv6 routing process. Without it, the router will ignore IPv6 packets even if the interfaces have addresses.
Q: Why does my PC show a link‑local address but not the static IPv6 I entered?
A: Packet Tracer sometimes defaults to Stateless Address Autoconfiguration if you forget to disable it. Clear the IPv6 config on the PC and re‑enter the static address manually It's one of those things that adds up..
Q: Can I use a /64 prefix on a point‑to‑point link?
A: Technically you can, but the lab usually asks for a /30 to illustrate IPv6 point‑to‑point addressing. Stick with the lab’s prefix unless you have a good reason to deviate Easy to understand, harder to ignore. Less friction, more output..
Q: My ping works in one direction but not the other. What’s wrong?
A: Check the default gateway on the source PC. For IPv6, also verify that the router’s link‑local address is reachable (ping fe80::1%g0/0) Turns out it matters..
Q: Is it okay to use the “auto‑config” feature for IPv6 in this lab?
A: Not if the lab expects static addressing. Auto‑config will assign a different prefix, and your show ipv6 interface brief won’t match the lab’s answer key Practical, not theoretical..
That’s it. You’ve now got a complete, battle‑tested roadmap for verifying IPv4 and IPv6 addressing in the Packet Tracer 13.2 6‑packet lab. The next time you fire up the simulation, you’ll know exactly where to look, what to type, and why it matters.
Happy configuring, and may every ping turn green.
