16.3.1 Packet Tracer – Troubleshoot Static and Default Routes – Instructions Answer (2024)

Table of Contents
16.3.1 Packet Tracer – Troubleshoot Static and Default Routes (Instructor Version) Addressing Table Objectives Background / Scenario Instructions Answer Configurations Download Packet Tracer (.pka) file: 16.3.1 Packet Tracer - Troubleshoot Static and Default Routes.pka 515.61 KB 6113 downloads

16.3.1 Packet Tracer – Troubleshoot Static and Default Routes (Instructor Version)

16.3.1 Packet Tracer – Troubleshoot Static and Default Routes – Instructions Answer (1)

16.3.1 Packet Tracer – Troubleshoot Static and Default Routes

Addressing Table

DeviceInterfaceIP Addresses
R1G0/0172.31.1.1/25
2001:DB8:1::1/64
S0/0/0172.31.1.194/30
2001:DB8:2::194/64
R2G0/0172.31.0.1/24
2001:DB8:3::1/64
S0/0/0172.31.1.193/30
2001:DB8:2::193/64
S0/0/1172.31.1.197/30
2001:DB8:4::197/64
R3G0/0172.31.1.129/26
2001:DB8:5::1/64
S0/0/1172.31.1.198/30
2001:DB8:4::198/64
PC1NIC172.31.1.126/25
2001:DB8:1::126/64
PC2NIC172.31.0.254/24
2001:DB8:3::254/64
ServerNIC172.31.1.190/26
2001:DB8:5::190/64

Objectives

In this activity you will troubleshoot static and default routes and repair any errors that you find.

  • Troubleshoot IPv4 static routes.
  • Troubleshoot IPv4 default routes.
  • Troubleshoot IPv6 static routes.
  • Configure IPv4 static routes.
  • Configure IPv4 default routes.
  • Configure IPv6 static routes.

Background / Scenario

A newly hired network technician is attempting to preconfigure a simple topology that will be delivered to a customer. The technician has not been able to establish connectivity between the three LANs. You have been asked to troubleshoot the topology and verify connectivity between the hosts on the three LANs over IPv4 and IPv6.

Instructions

Step 1: Locate and document the problems.

Review the routing table on R1, R2, R3.

  • Router R1
  • Router R2
  • Router R3
R1#show ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static routeGateway of last resort is 172.31.1.195 to network 0.0.0.0 172.31.0.0/16 is variably subnetted, 4 subnets, 3 masksC 172.31.1.0/25 is directly connected, GigabitEthernet0/0L 172.31.1.1/32 is directly connected, GigabitEthernet0/0C 172.31.1.192/30 is directly connected, Serial0/0/0L 172.31.1.194/32 is directly connected, Serial0/0/0S* 0.0.0.0/0 [1/0] via 172.31.1.195R1#R1#show ipv6 route IPv6 Routing Table - 8 entriesCodes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route, M - MIPv6 I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 D - EIGRP, EX - EIGRP externalC 2001:DB8:1::/64 [0/0] via GigabitEthernet0/0, directly connectedL 2001:DB8:1::1/128 [0/0] via GigabitEthernet0/0, receiveC 2001:DB8:2::/64 [0/0] via Serial0/0/0, directly connectedL 2001:DB8:2::194/128 [0/0] via Serial0/0/0, receiveS 2001:DB8:3::/64 [1/0] via Serial0/0/0, directly connectedS 2001:DB8:4::/64 [1/0] via Serial0/0/0, directly connectedS 2001:DB8:5::/64 [1/0] via Serial0/0/0, directly connectedL FF00::/8 [0/0] via Null0, receiveR1#
R2#show ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static routeGateway of last resort is not set 172.31.0.0/16 is variably subnetted, 8 subnets, 5 masksC 172.31.0.0/24 is directly connected, GigabitEthernet0/0L 172.31.0.1/32 is directly connected, GigabitEthernet0/0S 172.31.1.0/25 [1/0] via 172.31.1.198S 172.31.1.128/26 [1/0] via 172.31.1.194C 172.31.1.192/30 is directly connected, Serial0/0/0L 172.31.1.193/32 is directly connected, Serial0/0/0C 172.31.1.196/30 is directly connected, Serial0/0/1L 172.31.1.197/32 is directly connected, Serial0/0/1R2#show ipv6 route IPv6 Routing Table - 9 entriesCodes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route, M - MIPv6 I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 D - EIGRP, EX - EIGRP externalS 2001:DB6:1::/64 [1/0] via 2001:DB8:2::194C 2001:DB8:2::/64 [0/0] via Serial0/0/0, directly connectedL 2001:DB8:2::193/128 [0/0] via Serial0/0/0, receiveC 2001:DB8:3::/64 [0/0] via GigabitEthernet0/0, directly connectedL 2001:DB8:3::1/128 [0/0] via GigabitEthernet0/0, receiveC 2001:DB8:4::/64 [0/0] via Serial0/0/1, directly connectedL 2001:DB8:4::197/128 [0/0] via Serial0/0/1, receiveS 2001:DB8:5::/64 [1/0] via 2001:DB8:4::198L FF00::/8 [0/0] via Null0, receiveR2#
R3#show ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static routeGateway of last resort is not set 172.31.0.0/16 is variably subnetted, 7 subnets, 5 masksS 172.31.0.0/24 is directly connected, Serial0/0/1S 172.31.1.0/28 is directly connected, Serial0/0/1C 172.31.1.128/26 is directly connected, GigabitEthernet0/0L 172.31.1.129/32 is directly connected, GigabitEthernet0/0S 172.31.1.192/30 is directly connected, Serial0/0/1C 172.31.1.196/30 is directly connected, Serial0/0/1L 172.31.1.198/32 is directly connected, Serial0/0/1R3#show ipv6 route IPv6 Routing Table - 7 entriesCodes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route, M - MIPv6 I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 D - EIGRP, EX - EIGRP externalS 2001:DB8:2::/64 [1/0] via Serial0/0/1, directly connectedS 2001:DB8:3::/64 [1/0] via Serial0/0/1, directly connectedC 2001:DB8:4::/64 [0/0] via Serial0/0/1, directly connectedL 2001:DB8:4::198/128 [0/0] via Serial0/0/1, receiveC 2001:DB8:5::/64 [0/0] via GigabitEthernet0/0, directly connectedL 2001:DB8:5::1/128 [0/0] via GigabitEthernet0/0, receiveL FF00::/8 [0/0] via Null0, receiveR3#
See Also
Apple Releases iOS 16.3 With Security Keys for Apple ID, New HomePod Support, Bug Fixes and MoreApple Users Need to Update iOS Now to Patch Serious FlawsWhen Will iOS 16.3 Be Released?Apple Releases iOS 16.3.1 With iCloud Fix, Crash Detection Optimizations and More

Record your findings in a table like the one below.

LocationProblemSolution
R1IPv4 Default route next hop interface address is incorrect.Change next hop address to 172.31.1.193
R2IPv6 route to LAN 1 has the wrong network address for the destination network.Change destination address from 2001:DB6:1::/64 to 2001:DB8:1::/64
R2The next hop addresses in the two IPv4 routes are reversed.Change the statements to ip route 172.31.1.0 255.255.255.128 172.31.1.194 and ip route 172.31.1.128 255.255.255.192 172.31.1.198
R3The IPv6 route to LAN 1 is missing.Configure a directly connected static route to 2001:DB8:1::/64
R3The IPv4 route to LAN 1 has the wrong mask for the network.Change the mask to 255.255.255.128

Step 2: Repair the problems.

Configure the devices so that full connectivity exists between the hosts on the LANs over IPv4 and IPv6.

Note: Your task is to establish connectivity using the existing static route design. Changing the types of static routes used will result in a loss of points.

See Also
5 Things to Know About the iOS 16.3.1 Update

Answer Configurations

Router R1

enableconf tno ip route 0.0.0.0 0.0.0.0 172.31.1.195ip route 0.0.0.0 0.0.0.0 172.31.1.193end

Router R2

enableconf tno ip route 172.31.1.0 255.255.255.128 172.31.1.198no ip route 172.31.1.128 255.255.255.192 172.31.1.194ip route 172.31.1.0 255.255.255.128 172.31.1.194ip route 172.31.1.128 255.255.255.192 172.31.1.198no ipv6 route 2001:DB6:1::/64 2001:DB8:2::194ipv6 route 2001:DB8:1::/64 2001:DB8:2::194end

Router R3

enableconf tno ip route 172.31.1.0 255.255.255.240 Serial0/0/1ip route 172.31.1.0 255.255.255.128 Serial0/0/1ipv6 route 2001:DB8:1::/64 Serial0/0/1end

Download Packet Tracer (.pka) file:

16.3.1 Packet Tracer – Troubleshoot Static and Default Routes – Instructions Answer (2)

16.3.1 Packet Tracer - Troubleshoot Static and Default Routes.pka 515.61 KB 6113 downloads

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15.6.1 Packet Tracer – Configure IPv4 and IPv6 Static and Default Routes

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16.3.2 Packet Tracer – Troubleshoot IPv4 and IPv6 Static and Default Routes – Physical Mode

16.3.1 Packet Tracer – Troubleshoot Static and Default Routes – Instructions Answer (2024)
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