6.1.3 Lab – Implement VRF-Lite (Answers)

6.1.3 Lab – Implement VRF-Lite (Answers)

Topology

Addressing Table

Objectives

• Part 1: Build the Network and Configure Basic Device Settings
• Part 2: Configure and Verify VRF and Interface Addressing
• Part 3: Configure and Verify Static Routing for Reachability Inside Each VRF

Background / Scenario

By default, all interfaces on a router are included in the global routing table. Service providers must be able to virtualize the router, thus creating multiple, virtual routing tables. Virtual Routing and Forwarding (VRF) can do just that. VRF-Lite is VRF without the MPLS component.

In this lab, you will work on R1, playing the part of a service provider router, as it supports two customers who have the same addressing scheme configured. Your task is to deploy VRF-Lite and static routing so that the customers have full reachability within their network.

Note: This lab is an exercise in developing, deploying, and verifying VRF-Lite, and does not reflect networking best practices.

Note: The routers and switches used with CCNP hands-on labs are Cisco 4221 and Cisco 3650, both with Cisco IOS XE Release 16.9.4 (universalk9 image), and Cisco 2960+ with IOS release 15.2 (lanbase image). Other routers, switches, and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and the output produced might vary from what is shown in the labs

Note: Ensure that the routers and switches have been erased and have no startup configurations. If you are unsure contact your instructor.

Note: The PCs used in this lab do not require addressing. They are needed to bring interface VLAN 11 up.

Instructor Note: Refer to the Instructor Lab Manual for the procedures to initialize and reload devices.

Required Resources

• 3 Routers (Cisco 4221 with Cisco IOS XE Release 16.9.4 universal image or comparable)
• 2 Switches (Cisco 3650 with Cisco IOS XE release 16.9.4 universal image or comparable)
• 1 Switch (Cisco 2960+ with Cisco IOS release 15.2 lanbase image or comparable)
• 2 PCs (Windows with a terminal emulation program, such as Tera Term)
• Console cables to configure the Cisco IOS devices via the console ports
• Ethernet and serial cables as shown in the topology

Part 1: Build the Network and Configure Basic Device Settings

In Part 1, you will set up the network topology and configure basic settings on all devices.

Step 1: Cable the network as shown in the topology.

Attach the devices as shown in the topology diagram, and cable as necessary.

Step 2: Configure basic settings for each device.

a. Console into each device, enter global configuration mode, and apply the basic settings. A command list for each device using the following startup configurations.

Router R1

enable
configure terminal
hostname R1
no ip domain lookup
ipv6 unicast-routing
banner motd # R1, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit

Router R2

enable
configure terminal
hostname R2
no ip domain lookup
ipv6 unicast-routing
banner motd # R2, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit
interface g0/0/0
 ip address 10.1.2.2 255.255.255.0
 ipv6 address fe80::2:1 link-local
 ipv6 address 2001:db8:acad:1012::2/64
 no shutdown
 exit
interface loopback 0
 ip address 192.168.2.1 255.255.255.0
 ipv6 address fe80::2:2 link-local
 ipv6 address 2001:db8:acad:2000::1/64
 no shutdown
 exit
ip route 0.0.0.0 0.0.0.0 g0/0/0 10.1.2.1
ipv6 route ::/0 g0/0/0 2001:db8:acad:1012::1

Router R3

enable
configure terminal
hostname R3
no ip domain lookup
ipv6 unicast-routing
banner motd # R3, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit
interface s0/1/0
 ip address 10.1.3.2 255.255.255.0
 ipv6 address fe80::3:1 link-local
 ipv6 address 2001:db8:acad:1013::2/64
 no shutdown
 exit
interface loopback 0
 ip address 192.168.3.1 255.255.255.0
 ipv6 address fe80::3:2 link-local
 ipv6 address 2001:db8:acad:3000::1/64
 no shutdown
 exit
ip route 0.0.0.0 0.0.0.0 s0/1/0 10.1.3.1
ipv6 route ::/0 s0/1/0 2001:db8:acad:1013::1

Switch D1

enable
configure terminal
hostname D1
no ip domain lookup
ip routing
ipv6 unicast-routing
banner motd # D1, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit
interface range g1/0/1-24, g1/1/1-4, g0/0
 shutdown
 exit
interface g1/0/5
 no switchport
 ip address 10.1.2.2 255.255.255.0
 ipv6 address fe80::d1:1 link-local
 ipv6 address 2001:db8:acad:1012::2/64
 no shutdown
 exit
vlan 11
 name LOCAL_VLAN
 exit
interface vlan 11
 ip address 192.168.2.1 255.255.255.0
 ipv6 address fe80::d1:2 link-local
 ipv6 address 2001:db8:acad:2000::1/64
 no shutdown
 exit
interface g1/0/23
 switchport mode access
 switchport access vlan 11
 no shutdown
 exit
ip route 0.0.0.0 0.0.0.0 g1/0/5 10.1.2.1
ipv6 route ::/0 g1/0/5 2001:db8:acad:1012::1

Switch D2

enable
configure terminal
hostname D2
no ip domain lookup
ip routing
ipv6 unicast-routing
banner motd # D2, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit
interface range g1/0/1-24, g1/1/1-4, g0/0
 shutdown
 exit
interface g1/0/5
 no switchport
 ip address 10.1.3.2 255.255.255.0
 ipv6 address fe80::d2:1 link-local
 ipv6 address 2001:db8:acad:1013::2/64
 no shutdown
 exit
vlan 11
 name LOCAL_VLAN
 exit
interface vlan 11
 ip address 192.168.3.1 255.255.255.0
 ipv6 address fe80::d2:2 link-local
 ipv6 address 2001:db8:acad:3000::1/64
 no shutdown
 exit
interface g1/0/23
 switchport mode access
 switchport access vlan 11
 no shutdown
 exit
ip route 0.0.0.0 0.0.0.0 g1/0/5 10.1.3.1
ipv6 route ::/0 g1/0/5 2001:db8:acad:1013::1

Switch A1

enable
configure terminal
hostname A1
no ip domain lookup
banner motd # A1, Implement VRF-Lite #
line con 0
 exec-timeout 0 0
 logging synchronous
 exit
line vty 0 4
 privilege level 15
 password cisco123
 exec-timeout 0 0
 logging synchronous
 login
 exit
interface range f0/1-24, g0/1-2
 shutdown
 exit
vlan 5
 name D1
 exit
vlan 8
 name D2
 exit
interface f0/11
 switchport mode trunk
 switchport nonegotiate
 no shutdown
 exit
interface f0/1
 switchport mode access
 switchport access vlan 5
 no shutdown
 exit
interface f0/3
 switchport mode access
 switchport access vlan 8
 no shutdown

b. Set the clock on each router to UTC time.

c. Save the running configuration to startup-config.

Part 2: Configure and Verify VRF and Interface Addressing

In Part 2, you will configure and verify VRF-Lite on R1. The other devices, R2, R3, D1, D2, and A1 require no additional configuration. Once again, the configuration being used here is not meant to represent best practice, but to assess your ability to complete the required configurations.

Step 1: On R1, create the required VRFs.

a. Create the Customer_A and Customer_B VRFs, and initialize them for both IPv4 and IPv6. The VRF names are case sensitive.

R1(config)# vrf definition Customer_A
R1(config-vrf)# address-family ipv4
R1(config-vrf-af)# address-family ipv6
R1(config-vrf-af)# exit
R1(config-vrf)# vrf definition Customer_B
R1(config-vrf)# address-family ipv4
R1(config-vrf-af)# address-family ipv6
R1(config-vrf-af)# exit

b. Configure interfaces G0/0/0 and S0/1/0 for the Customer_A network.

R1(config)# interface g0/0/0
R1(config-if)# vrf forwarding Customer_A
R1(config-if)# ip address 10.1.2.1 255.255.255.0
R1(config-if)# ipv6 address fe80::1:1 link-local
R1(config-if)# ipv6 address 2001:db8:acad:1012::1/64
R1(config-if)# no shutdown
R1(config-if)# exit
R1(config)# interface s0/1/0
R1(config-if)# vrf forwarding Customer_A
R1(config-if)# ip address 10.1.3.1 255.255.255.0
R1(config-if)# ipv6 address fe80::1:4 link-local
R1(config-if)# ipv6 address 2001:db8:acad:1013::1/64
R1(config-if)# no shutdown
R1(config-if)# exit

c. Configure R1 interface G0/0/1 to support the Customer_B networks. G0/0/1 will be performing inter-VLAN routing between VLANs 5 and 8.

R1(config)# interface g0/0/1
R1(config-if)# no shutdown
R1(config-if)# exit
R1(config)# interface g0/0/1.5
R1(config-subif)# encapsulation dot1q 5
R1(config-subif)# vrf forwarding Customer_B
R1(config-subif)# ip address 10.1.2.1 255.255.255.0
R1(config-subif)# ipv6 address fe80::1:2 link-local
R1(config-subif)# ipv6 address 2001:db8:acad:1012::1/64
R1(config-subif)# exit
R1(config)# interface g0/0/1.8
R1(config-subif)# encapsulation dot1q 8
R1(config-subif)# vrf forwarding Customer_B
R1(config-subif)# ip address 10.1.3.1 255.255.255.0
R1(config-subif)# ipv6 address fe80::1:3 link-local
R1(config-subif)# ipv6 address 2001:db8:acad:1013::1/64
R1(config-subif)# end

Step 2: Verify the VRF-Lite configuration.

a. Verify the interface assignments using the show ip vrf interfaces command.

R1# show ip vrf interfaces
Interface              IP-Address      VRF                              Protocol
Gi0/0/0                10.1.2.1        Customer_A                       up
Se0/1/0                10.1.3.1        Customer_A                       up
Gi0/0/1.5              10.1.2.1        Customer_B                       up
Gi0/0/1.8              10.1.3.1        Customer_B                       up

b. Verify the VRF routing tables with the show ip route vrf vrf_name and show ipv6 route vrf vrf_name command.

R1# show ip route vrf Customer_A | begin Gateway
Gateway of last resort is not set

      10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C        10.1.2.0/24 is directly connected, GigabitEthernet0/0/0
L        10.1.2.1/32 is directly connected, GigabitEthernet0/0/0
C        10.1.3.0/24 is directly connected, Serial0/1/0
L        10.1.3.1/32 is directly connected, Serial0/1/0

R1# show ipv6 route vrf Customer_B
IPv6 Routing Table - Customer_B - 5 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
<output omitted>
       a - Application
C   2001:DB8:ACAD:1012::/64 [0/0]
     via GigabitEthernet0/0/1.5, directly connected
L   2001:DB8:ACAD:1012::1/128 [0/0]
     via GigabitEthernet0/0/1.5, receive
C   2001:DB8:ACAD:1013::/64 [0/0]
     via GigabitEthernet0/0/1.8, directly connected
L   2001:DB8:ACAD:1013::1/128 [0/0]
     via GigabitEthernet0/0/1.8, receive
L   FF00::/8 [0/0]
     via Null0, receive

c. Verify next-hop reachability within each vrf with the ping vrf vrf_name address command.

R1# ping vrf Customer_A 10.1.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.2.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
R1# ping vrf Customer_A 2001:db8:acad:1012::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:1012::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/10 ms
R1# ping vrf Customer_A 10.1.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/3 ms
R1# ping vrf Customer_A 2001:db8:acad:1013::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:1013::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/3 ms

Part 3: Configure and Verify Static Routing for Reachability Inside Each VRF

In Part 3, you will configure static routing so that all networks are reachable within their respective VRFs. At the end of this part, R1 should be able to successfully source a ping from interface loopback0 to R3 interface loopback0, and D1 should be able to successfully source a ping from interface VLAN 11 to D2 interface VLAN 11. Once again, the way these networks are being implemented is not meant to represent best practice, but to assess your ability to complete the required configurations.

Step 1: Verify that distant networks are not reachable within each VRF.

In this step, you will check to make sure that distant networks are not reachable from R1 within each VRF.

a. On R1, issue the commands ping vrf Customer_A 192.168.2.1 and ping vrf Customer_A 192.168.3.1. Neither should succeed.

R1# ping vrf Customer_A 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1# ping vrf Customer_A 192.168.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

b. On R1, issue the commands ping vrf Customer_A 2001:db8:acad:2000::1 and ping vrf Customer_A 2001:db8:acad:3000::1. Neither should succeed.

R1# ping vrf Customer_A 2001:db8:acad:2000::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:2000::1, timeout is 2 seconds:

% No valid route for destination
Success rate is 0 percent (0/1)
R1# ping vrf Customer_A 2001:db8:acad:3000::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:3000::1, timeout is 2 seconds:

% No valid route for destination
Success rate is 0 percent (0/1)

c. On R1, issue the commands ping vrf Customer_B 192.168.2.1 and ping vrf Customer_B 192.168.3.1. Neither should succeed.

R1# ping vrf Customer_B 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1# ping vrf Customer_B 192.168.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

d. On R1, issue the commands ping vrf Customer_B 2001:db8:acad:2000::1 and ping vrf Customer_B 2001:db8:acad:3000::1. Neither should succeed.

R1# ping vrf Customer_B 2001:db8:acad:2000::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:2000::1, timeout is 2 seconds:

% No valid route for destination
Success rate is 0 percent (0/1)

R1# ping vrf Customer_B 2001:db8:acad:3000::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:3000::1, timeout is 2 seconds:

% No valid route for destination
Success rate is 0 percent (0/1)

Step 2: Configure static routing at R1 for each VRF.

In this step, you will configure R1 so that it can reach distant networks in each VRF. The neighbor systems (D1, D2, R2, and R3) have static routes already configured, so as soon as you correctly install these static routes, there will be full reachability within each VRF.

a. On R1, create static routes for the distant networks in the Customer_A VRF using the ip route vrf vrf_name destination_network next-hop command.

R1(config)# ip route vrf Customer_A 192.168.2.0 255.255.255.0 g0/0/0 10.1.2.2
R1(config)# ip route vrf Customer_A 192.168.3.0 255.255.255.0 s0/1/0 10.1.3.2
R1(config)# ipv6 route vrf Customer_A 2001:db8:acad:2000::/64 g0/0/0 2001:db8:acad:1012::2
R1(config)# ipv6 route vrf Customer_A 2001:db8:acad:3000::/64 s0/1/0 2001:db8:acad:1013::2

b. Use the example above to correctly configure fully specified static routes for the Customer_B network.

R1(config)# ip route vrf Customer_B 192.168.2.0 255.255.255.0 GigabitEthernet0/0/1.5 10.1.2.2
R1(config)# ip route vrf Customer_B 192.168.3.0 255.255.255.0 GigabitEthernet0/0/1.8 10.1.3.2
R1(config)# ipv6 route vrf Customer_B 2001:DB8:ACAD:2000::/64 GigabitEthernet0/0/1.5 2001:DB8:ACAD:1012::2
R1(config)# ipv6 route vrf Customer_B 2001:DB8:ACAD:3000::/64 GigabitEthernet0/0/1.8 2001:DB8:ACAD:1013::2

Step 3: Verify full reachability within each VRF.

a. On R2, ping the IPv4 and IPv6 addresses of R3 interface Loopback0 using a source address of R2 interface Loopback0. All pings should be successful.

R2# ping 192.168.3.1 source loopback0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.2.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/3 ms
R2# ping 2001:db8:acad:3000::1 source loopback0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:3000::1, timeout is 2 seconds:
Packet sent with a source address of 2001:DB8:ACAD:2000::1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/2 ms

b. On D1, ping the IPv4 and IPv6 addresses of D2 interface VLAN 11 using a source address of D1 interface VLAN 11. All pings should be successful.

D1# ping 192.168.3.1 source vlan11

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.2.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms

D1# ping 2001:db8:acad:3000::1 source vlan11

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:3000::1, timeout is 2 seconds:
Packet sent with a source address of 2001:DB8:ACAD:2000::1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/5/17 ms

Router Interface Summary Table

Note: To find out how the router is configured, look at the interfaces to identify the type of router and how many interfaces the router has. There is no way to effectively list all the combinations of configurations for each router class. This table includes identifiers for the possible combinations of Ethernet and Serial interfaces in the device. The table does not include any other type of interface, even though a specific router may contain one. An example of this might be an ISDN BRI interface. The string in parenthesis is the legal abbreviation that can be used in Cisco IOS commands to represent the interface.

Device Configs – Final

Router R1

R1# show run
Building configuration...

Current configuration : 3151 bytes
!
version 16.9
service timestamps debug datetime msec
service timestamps log datetime msec
platform qfp utilization monitor load 80
no platform punt-keepalive disable-kernel-core
!
hostname R1
!
boot-start-marker
boot-end-marker
!
vrf definition Customer_A
 !
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family
!
vrf definition Customer_B
 !
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family
!
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family
!
no aaa new-model
!
no ip domain lookup
!
login on-success log
!
subscriber templating
!
!
ipv6 unicast-routing
multilink bundle-name authenticated
!
spanning-tree extend system-id
!
redundancy
 mode none
!
interface GigabitEthernet0/0/0
 vrf forwarding Customer_A
 ip address 10.1.2.1 255.255.255.0
 negotiation auto
 ipv6 address FE80::1:1 link-local
 ipv6 address 2001:DB8:ACAD:1012::1/64
!
interface GigabitEthernet0/0/1
 no ip address
 negotiation auto
!
interface GigabitEthernet0/0/1.5
 encapsulation dot1Q 5
 vrf forwarding Customer_B
 ip address 10.1.2.1 255.255.255.0
 ipv6 address FE80::1:2 link-local
 ipv6 address 2001:DB8:ACAD:1012::1/64
!
interface GigabitEthernet0/0/1.8
 encapsulation dot1Q 8
 vrf forwarding Customer_B
 ip address 10.1.3.1 255.255.255.0
 ipv6 address FE80::1:3 link-local
 ipv6 address 2001:DB8:ACAD:1013::1/64
!
interface Serial0/1/0
 vrf forwarding Customer_A
 ip address 10.1.3.1 255.255.255.0
 ipv6 address FE80::1:3 link-local
 ipv6 address 2001:DB8:ACAD:1013::1/64
!
interface Serial0/1/1
 no ip address
!
ip forward-protocol nd
no ip http server
ip http secure-server
ip tftp source-interface GigabitEthernet0
ip route vrf Customer_A 192.168.2.0 255.255.255.0 GigabitEthernet0/0/0 10.1.2.2
ip route vrf Customer_A 192.168.3.0 255.255.255.0 Serial0/1/0 10.1.3.2
ip route vrf Customer_B 192.168.2.0 255.255.255.0 GigabitEthernet0/0/1.5 10.1.2.2
ip route vrf Customer_B 192.168.3.0 255.255.255.0 GigabitEthernet0/0/1.8 10.1.3.2
!
ipv6 route vrf Customer_B 2001:DB8:ACAD:2000::/64 GigabitEthernet0/0/1.5 2001:DB8:ACAD:1012::2
ipv6 route vrf Customer_A 2001:DB8:ACAD:2000::/64 GigabitEthernet0/0/0 2001:DB8:ACAD:1012::2
ipv6 route vrf Customer_B 2001:DB8:ACAD:3000::/64 GigabitEthernet0/0/1.8 2001:DB8:ACAD:1013::2
ipv6 route vrf Customer_A 2001:DB8:ACAD:3000::/64 Serial0/1/0 2001:DB8:ACAD:1013::2
!
control-plane
!
banner motd ^C R1, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
 transport input none
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
!
end

Router R2

R2# show run
Building configuration...


Current configuration : 1760 bytes
!
! Last configuration change at 04:14:23 UTC Wed Jan 8 2020
!
version 16.9
service timestamps debug datetime msec
service timestamps log datetime msec
platform qfp utilization monitor load 80
no platform punt-keepalive disable-kernel-core
!
hostname R2
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
no ip domain lookup
!
login on-success log
!
subscriber templating
!
ipv6 unicast-routing
multilink bundle-name authenticated
!
spanning-tree extend system-id
!
redundancy
 mode none
!
interface Loopback0
 ip address 192.168.2.1 255.255.255.0
 ipv6 address FE80::2:2 link-local
 ipv6 address 2001:DB8:ACAD:2000::1/64
!
interface GigabitEthernet0/0/0
 ip address 10.1.2.2 255.255.255.0
 negotiation auto
 ipv6 address FE80::2:1 link-local
 ipv6 address 2001:DB8:ACAD:1012::2/64
!
interface GigabitEthernet0/0/1
 no ip address
 negotiation auto
!
ip forward-protocol nd
no ip http server
ip http secure-server
ip tftp source-interface GigabitEthernet0
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0 10.1.2.1
!
ipv6 route ::/0 GigabitEthernet0/0/0 2001:DB8:ACAD:1012::1
!
control-plane
!
banner motd ^C R2, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
 transport input none
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
!
end

Router R3

R3# show run
Building configuration...

Current configuration : 1821 bytes
!
version 16.9
service timestamps debug datetime msec
service timestamps log datetime msec
platform qfp utilization monitor load 80
no platform punt-keepalive disable-kernel-core
!
hostname R3
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
no ip domain lookup
!
login on-success log
!
subscriber templating
!
ipv6 unicast-routing
multilink bundle-name authenticated
!
spanning-tree extend system-id
!
redundancy
 mode none
!
interface Loopback0
 ip address 192.168.3.1 255.255.255.0
 ipv6 address FE80::3:2 link-local
 ipv6 address 2001:DB8:ACAD:3000::1/64
!
interface GigabitEthernet0/0/0
 no ip address
 negotiation auto
!
interface GigabitEthernet0/0/1
 no ip address
 negotiation auto
!
interface Serial0/1/0
 ip address 10.1.3.2 255.255.255.0
 ipv6 address FE80::3:1 link-local
 ipv6 address 2001:DB8:ACAD:1013::2/64
!
interface Serial0/1/1
 no ip address
!
ip forward-protocol nd
no ip http server
ip http secure-server
ip tftp source-interface GigabitEthernet0
ip route 0.0.0.0 0.0.0.0 Serial0/1/0 10.1.3.1
!
ipv6 route ::/0 Serial0/1/0 2001:DB8:ACAD:1013::1
!
control-plane
!
banner motd ^C R3, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
 transport input none
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
!
end

Switch D1

D1# show run
Building configuration...

Current configuration : 9267 bytes
!
version 16.9
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
! Call-home is enabled by Smart-Licensing.
service call-home
no platform punt-keepalive disable-kernel-core
!
hostname D1
!
vrf definition Mgmt-vrf
 !
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family
!
no aaa new-model
switch 1 provision ws-c3650-24ts
!
ip routing
!
no ip domain lookup
!
login on-success log
ipv6 unicast-routing
!
license boot level ipservicesk9
!
diagnostic bootup level minimal
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
!
redundancy
 mode sso
!
transceiver type all
 monitoring
!
class-map match-any system-cpp-police-topology-control
  description Topology control
class-map match-any system-cpp-police-sw-forward
  description Sw forwarding, L2 LVX data, LOGGING
class-map match-any system-cpp-default
  description Inter FED, EWLC control, EWLC data
class-map match-any system-cpp-police-sys-data
  description Learning cache ovfl, High Rate App, Exception, EGR Exception, NFL SAMPLED DATA, RPF Failed
class-map match-any system-cpp-police-punt-webauth
  description Punt Webauth
class-map match-any system-cpp-police-l2lvx-control
  description L2 LVX control packets
class-map match-any system-cpp-police-forus
  description Forus Address resolution and Forus traffic
class-map match-any system-cpp-police-multicast-end-station
  description MCAST END STATION
class-map match-any system-cpp-police-multicast
  description Transit Traffic and MCAST Data
class-map match-any system-cpp-police-l2-control
  description L2 control
class-map match-any system-cpp-police-dot1x-auth
  description DOT1X Auth
class-map match-any system-cpp-police-data
  description ICMP redirect, ICMP_GEN and BROADCAST
class-map match-any system-cpp-police-stackwise-virt-control
  description Stackwise Virtual
class-map match-any non-client-nrt-class
class-map match-any system-cpp-police-routing-control
  description Routing control and Low Latency
class-map match-any system-cpp-police-protocol-snooping
  description Protocol snooping
class-map match-any system-cpp-police-dhcp-snooping
  description DHCP snooping
class-map match-any system-cpp-police-system-critical
  description System Critical and Gold Pkt
!
policy-map system-cpp-policy
!
interface GigabitEthernet0/0
 vrf forwarding Mgmt-vrf
 no ip address
 shutdown
 negotiation auto
!
interface GigabitEthernet1/0/1
 shutdown
!
interface GigabitEthernet1/0/2
 shutdown
!
interface GigabitEthernet1/0/3
 shutdown
!
interface GigabitEthernet1/0/4
 shutdown
!
interface GigabitEthernet1/0/5
 no switchport
 ip address 10.1.2.2 255.255.255.0
 ipv6 address FE80::D1:1 link-local
 ipv6 address 2001:DB8:ACAD:1012::2/64
!
interface GigabitEthernet1/0/6
 shutdown
!
interface GigabitEthernet1/0/7
 shutdown
!
interface GigabitEthernet1/0/8
 shutdown
!
interface GigabitEthernet1/0/9
 shutdown
!
interface GigabitEthernet1/0/10
 shutdown
!
interface GigabitEthernet1/0/11
 shutdown
!
interface GigabitEthernet1/0/12
 shutdown
!
interface GigabitEthernet1/0/13
 shutdown
!
interface GigabitEthernet1/0/14
 shutdown
!
interface GigabitEthernet1/0/15
 shutdown 
!
interface GigabitEthernet1/0/16
 shutdown
!
interface GigabitEthernet1/0/17
 shutdown
!
interface GigabitEthernet1/0/18
 shutdown
!
interface GigabitEthernet1/0/19
 shutdown
!
interface GigabitEthernet1/0/20
 shutdown
!
interface GigabitEthernet1/0/21
 shutdown
!
interface GigabitEthernet1/0/22
 shutdown
!
interface GigabitEthernet1/0/23
 switchport access vlan 11
 switchport mode access
!
interface GigabitEthernet1/0/24
 shutdown
!
interface GigabitEthernet1/1/1
 shutdown
!
interface GigabitEthernet1/1/2
 shutdown
!
interface GigabitEthernet1/1/3
 shutdown
!
interface GigabitEthernet1/1/4
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
interface Vlan11
 ip address 192.168.2.1 255.255.255.0
 ipv6 address FE80::D1:2 link-local
 ipv6 address 2001:DB8:ACAD:2000::1/64
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip route 0.0.0.0 0.0.0.0 GigabitEthernet1/0/5 10.1.2.1
!
ipv6 route ::/0 GigabitEthernet1/0/5 2001:DB8:ACAD:1012::1
!
control-plane
 service-policy input system-cpp-policy
!
banner motd ^C D1, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
line vty 5 15
 login
!
end

Switch D2

D2# show run
Building configuration...

Current configuration : 9267 bytes
!
version 16.9
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
! Call-home is enabled by Smart-Licensing.
service call-home
no platform punt-keepalive disable-kernel-core
!
hostname D2
!
vrf definition Mgmt-vrf
 !
 address-family ipv4
 exit-address-family
 !
 address-family ipv6
 exit-address-family
!
no aaa new-model
switch 1 provision ws-c3650-24ts
!
ip routing
!
no ip domain lookup
!
login on-success log
ipv6 unicast-routing
!
license boot level ipservicesk9
!
!
diagnostic bootup level minimal
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
!
redundancy
 mode sso
!
transceiver type all
 monitoring
!
class-map match-any system-cpp-police-topology-control
  description Topology control
class-map match-any system-cpp-police-sw-forward
  description Sw forwarding, L2 LVX data, LOGGING
class-map match-any system-cpp-default
  description Inter FED, EWLC control, EWLC data
class-map match-any system-cpp-police-sys-data
  description Learning cache ovfl, High Rate App, Exception, EGR Exception, NFL SAMPLED DATA, RPF Failed
class-map match-any system-cpp-police-punt-webauth
  description Punt Webauth
class-map match-any system-cpp-police-l2lvx-control
  description L2 LVX control packets
class-map match-any system-cpp-police-forus
  description Forus Address resolution and Forus traffic
class-map match-any system-cpp-police-multicast-end-station
  description MCAST END STATION
class-map match-any system-cpp-police-multicast
  description Transit Traffic and MCAST Data
class-map match-any system-cpp-police-l2-control
  description L2 control
class-map match-any system-cpp-police-dot1x-auth
  description DOT1X Auth
class-map match-any system-cpp-police-data
  description ICMP redirect, ICMP_GEN and BROADCAST
class-map match-any system-cpp-police-stackwise-virt-control
  description Stackwise Virtual
class-map match-any non-client-nrt-class
class-map match-any system-cpp-police-routing-control
  description Routing control and Low Latency
class-map match-any system-cpp-police-protocol-snooping
  description Protocol snooping
class-map match-any system-cpp-police-dhcp-snooping
  description DHCP snooping
class-map match-any system-cpp-police-system-critical
  description System Critical and Gold Pkt
!
policy-map system-cpp-policy
!
interface GigabitEthernet0/0
 vrf forwarding Mgmt-vrf
 no ip address
 shutdown
 negotiation auto
!
interface GigabitEthernet1/0/1
 shutdown
!
interface GigabitEthernet1/0/2
 shutdown
!
interface GigabitEthernet1/0/3
 shutdown
!
interface GigabitEthernet1/0/4
 shutdown
!
interface GigabitEthernet1/0/5
 no switchport
 ip address 10.1.3.2 255.255.255.0
 ipv6 address FE80::D2:1 link-local
 ipv6 address 2001:DB8:ACAD:1013::2/64
!
interface GigabitEthernet1/0/6
 shutdown
!
interface GigabitEthernet1/0/7
 shutdown
!         
interface GigabitEthernet1/0/8
 shutdown
!
interface GigabitEthernet1/0/9
 shutdown
!
interface GigabitEthernet1/0/10
 shutdown
!
interface GigabitEthernet1/0/11
 shutdown
!
interface GigabitEthernet1/0/12
 shutdown
!
interface GigabitEthernet1/0/13
 shutdown
!
interface GigabitEthernet1/0/14
 shutdown
!
interface GigabitEthernet1/0/15
 shutdown 
!
interface GigabitEthernet1/0/16
 shutdown
!
interface GigabitEthernet1/0/17
 shutdown
!
interface GigabitEthernet1/0/18
 shutdown
!
interface GigabitEthernet1/0/19
 shutdown
!
interface GigabitEthernet1/0/20
 shutdown
!
interface GigabitEthernet1/0/21
 shutdown
!
interface GigabitEthernet1/0/22
 shutdown
!
interface GigabitEthernet1/0/23
 switchport access vlan 11
 switchport mode access
!
interface GigabitEthernet1/0/24
 shutdown
!
interface GigabitEthernet1/1/1
 shutdown
!
interface GigabitEthernet1/1/2
 shutdown
!
interface GigabitEthernet1/1/3
 shutdown
!
interface GigabitEthernet1/1/4
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
interface Vlan11
 ip address 192.168.3.1 255.255.255.0
 ipv6 address FE80::D2:2 link-local
 ipv6 address 2001:DB8:ACAD:3000::1/64
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip route 0.0.0.0 0.0.0.0 GigabitEthernet1/0/5 10.1.3.1
!
ipv6 route ::/0 GigabitEthernet1/0/5 2001:DB8:ACAD:1013::1
!
control-plane
 service-policy input system-cpp-policy
!
banner motd ^C D2, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
line vty 5 15
 login
!
end

Switch A1

A1# show run
Building configuration...

Current configuration : 1883 bytes
!
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname A1
!
boot-start-marker
boot-end-marker
!
no aaa new-model
system mtu routing 1500
!
no ip domain-lookup
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface FastEthernet0/1
 switchport access vlan 5
 switchport mode access
!
interface FastEthernet0/2
 shutdown
!
interface FastEthernet0/3
 switchport access vlan 8
 switchport mode access
!
interface FastEthernet0/4
 shutdown
!
interface FastEthernet0/5
 shutdown
!
interface FastEthernet0/6
 shutdown
!
interface FastEthernet0/7
 shutdown
!
interface FastEthernet0/8
 shutdown
!
interface FastEthernet0/9
 shutdown
!
interface FastEthernet0/10
 shutdown
!
interface FastEthernet0/11
 switchport mode trunk
 switchport nonegotiate
!
interface FastEthernet0/12
 shutdown
!
interface FastEthernet0/13
 shutdown
!
interface FastEthernet0/14
 shutdown
!
interface FastEthernet0/15
 shutdown
!
interface FastEthernet0/16
 shutdown
!
interface FastEthernet0/17
 shutdown
!
interface FastEthernet0/18
 shutdown
!
interface FastEthernet0/19
 shutdown
!
interface FastEthernet0/20
 shutdown
!
interface FastEthernet0/21
 shutdown
!
interface FastEthernet0/22
 shutdown
!
interface FastEthernet0/23
 shutdown
!
interface FastEthernet0/24
 shutdown
!
interface GigabitEthernet0/1
 shutdown
!
interface GigabitEthernet0/2
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
ip http server
ip http secure-server
!
banner motd ^C A1, Implement VRF-Lite ^C
!
line con 0
 exec-timeout 0 0
 logging synchronous
line vty 0 4
 exec-timeout 0 0
 privilege level 15
 password cisco123
 logging synchronous
 login
line vty 5 15
 login
!
end

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