Verification & Packet Tracer Assembly Guide: PTL-0002

Lab ID: PTL-0002
Lab Title: Configuring Cisco Router Interfaces
Category: ip-addressing
Difficulty: Beginner

1. Physical & Packet Tracer Assembly Manifest#

Device Hardware & Module Schedule#

Port-to-Port Cabling Matrix#

Step-by-Step Packet Tracer Assembly#

1. Under Network Devices -> Routers, drag a 4321 router onto the workspace. Label it R1.
2. Under Network Devices -> Switches, drag two 2960 switches onto the workspace. Label them S1 and S2.
3. Under End Devices, drag two PCs. Label them PC-Admin and PC-Sales.
4. Cable the devices according to the matrix above using Copper Straight-Through cables.
5. Configure host IP addressing:
   • S1 (VLAN 1 SVI):
     • IPv4 Address: 192.168.1.2 / 255.255.255.0
     • IPv4 Gateway: 192.168.1.1
   • S2 (VLAN 1 SVI):
     • IPv4 Address: 192.168.2.2 / 255.255.255.0
     • IPv4 Gateway: 192.168.2.1
   • PC-Admin:
     • IPv4 Address: 192.168.1.10 / 255.255.255.0
     • IPv4 Gateway: 192.168.1.1
     • IPv6 Address: 2001:db8:acad:1::10/64
     • IPv6 Gateway: fe80::1
   • PC-Sales:
     • IPv4 Address: 192.168.2.10 / 255.255.255.0
     • IPv4 Gateway: 192.168.2.1
     • IPv6 Address: 2001:db8:acad:2::10/64
     • IPv6 Gateway: fe80::1

2. Pre-Configuration & Starter State#

In the starter state (starter):

• Physical topology is fully connected and cabled.
• Router R1 interfaces are unaddressed and in default administrative shutdown state (red link lights).
• Switches S1 and S2 are at baseline state.
• Student must configure dual-stack addressing on Gi0/0/0 and Gi0/0/1, enable global IPv6 routing (ipv6 unicast-routing), bring interfaces up (no shutdown), and verify cross-subnet reachability.

Complete configuration scripts:

• configs/R1.txt
• configs/S1.txt
• configs/S2.txt

3. Positive Verification Tests#

Test POS-01: Dual-Stack Interface Operating Status#

• Action: At R1#, issue show ip interface brief and show ipv6 interface brief.
• Expected Terminal Output:

  R1# show ip interface brief
  Interface              IP-Address      OK? Method Status                Protocol
  GigabitEthernet0/0/0   192.168.1.1     YES manual up                    up      
  GigabitEthernet0/0/1   192.168.2.1     YES manual up                    up      
  
  R1# show ipv6 interface brief
  GigabitEthernet0/0/0   [up/up]
      FE80::1
      2001:DB8:ACAD:1::1
  GigabitEthernet0/0/1   [up/up]
      FE80::1
      2001:DB8:ACAD:2::1
  

• Criterion: Both interfaces show Status up and Protocol up with expected IPv4, global IPv6, and link-local fe80::1.

Test POS-02: End-to-End Inter-LAN IPv4 Routing#

• Action: From PC-Admin Command Prompt, ping PC-Sales: ping 192.168.2.10.
• Expected Terminal Output:

  C:\> ping 192.168.2.10
  Pinging 192.168.2.10 with 32 bytes of data:
  Reply from 192.168.2.10: bytes=32 time<1ms TTL=127
  Reply from 192.168.2.10: bytes=32 time<1ms TTL=127
  Reply from 192.168.2.10: bytes=32 time<1ms TTL=127
  Reply from 192.168.2.10: bytes=32 time<1ms TTL=127
  
  Ping statistics for 192.168.2.10:
      Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
  

• Criterion: 100% packet success across the router.

Test POS-03: End-to-End Inter-LAN IPv6 Routing#

• Action: From PC-Admin Command Prompt, ping PC-Sales: ping 2001:db8:acad:2::10.
• Expected Terminal Output:

  C:\> ping 2001:db8:acad:2::10
  Pinging 2001:db8:acad:2::10 with 32 bytes of data:
  Reply from 2001:db8:acad:2::10: bytes=32 time<1ms
  Reply from 2001:db8:acad:2::10: bytes=32 time<1ms
  Reply from 2001:db8:acad:2::10: bytes=32 time<1ms
  Reply from 2001:db8:acad:2::10: bytes=32 time<1ms
  

• Criterion: 100% IPv6 packet success across the router.

4. Negative Verification Tests#

Test NEG-01: Administrative Shutdown Impact#

• Action: On R1, enter interface GigabitEthernet0/0/1 and issue shutdown. Then attempt to ping PC-Sales from PC-Admin.
• Expected Terminal Output:

  C:\> ping 192.168.2.10
  Reply from 192.168.1.1: Destination host unreachable.
  Reply from 192.168.1.1: Destination host unreachable.
  

• Criterion: Router R1 returns ICMP Type 3 Destination Unreachable because the route was removed from the routing table.

Test NEG-02: Missing Global IPv6 Unicast Routing#

• Action: On R1, issue no ipv6 unicast-routing. Attempt to ping 2001:db8:acad:2::10 from PC-Admin.
• Expected Terminal Output:

  C:\> ping 2001:db8:acad:2::10
  Request timed out.
  

• Criterion: Without ipv6 unicast-routing, the router operates only as an IPv6 host and will not forward packets between interfaces.

5. Diagnostic & Troubleshooting Reference#