CCNP Route Lab 8-5, IPv6 Troubleshooting Lab
Topology
Objective
- Troubleshoot and correct issues in an IPv6 topology.
Background
In this lab, you troubleshoot existing configurations to get a working topology. Copy and paste the initial configurations from this lab into the routers. Some of these configurations have intentional errors introduced. Your goal is to troubleshoot and correct any problems in the scenario that prevent full IPv6 connectivity. Full IPv6 connectivity means every address in the scenario is reachable from every router. If you do not know where to start, try pinging remote addresses and see which ones are reachable by either manually performing pings or using a Tcl script.
Note: This lab uses Cisco 1841 routers with Cisco IOS Release 12.4(24)T1 and the Advanced IP Services image c1841 -advipservicesk9-mz.124-24.T1 .bin. You can use other routers (such as a 2801 or 2811) and Cisco IOS Software versions if they have comparable capabilities and features. Depending on the router model and Cisco IOS Software version, the commands available and output produced might vary from what is shown in this lab.
Required Resources
- 4 routers (Cisco 1841 with Cisco IOS Release 12.4(24)T1 Advanced IP Services or comparable)
- Serial and console cables
Requirements
- Use the IPv6 addressing scheme shown in the diagram.
- All interfaces must be in OSPFv3 area 0.
- The router IDs are manually configured with the initial configurations.
- Do not use static routes, default routes, or routing protocols other than OSPFv3.
- All IPv6 addresses in the topology must be reachable from all routers.
Notes: ______________________________________________________________________________
____________________________________________________________________________________
Initial Configurations
Router R1
hostname R1 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::1:1/112 ! interface Serial0/0/0 ipv6 address FEC0::12:1/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.1.1 end
Router R2
hostname R2 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::2:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/0 ipv6 address FEC0::12:2/112 ipv6 ospf 1 area 0 bandwidth 64 no shutdown ! interface Serial0/0/1 ipv6 address FEC0::23:2/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.2.1 end
Router R3
hostname R3 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::3:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/1 ipv6 address FEC0::23:3/112 ipv6 ospf 1 area 0 bandwidth 64 no shutdown ! interface Serial0/1/0 ipv6 address FEC0::34:3/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.3.1 end
Router R4
hostname R4 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::4:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/0 ipv6 address FEC0::34:4/112 ipv6 ospf 100 area 0 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.4.1 end
Router Interface Summary Table
| Router Interface Summary | ||||
| Router Model | Ethernet Interface #1 |
Ethernet Interface #2 |
Serial Interface #1 |
Serial Interface #2 |
| 1700 | Fast Ethernet 0 (Fa0) |
Fast Ethernet 1 (Fa1) |
Serial 0 (S0) | Serial 0/0/1 (S0/0/1) |
| 1800 | Fast Ethernet 0/0 (Fa0/0) |
Fast Ethernet 0/1 (Fa0/1) |
Serial 0/0/0 (S0/0/0) |
Serial 0/0/1 (S0/0/1) |
| 2600 | Fast Ethernet 0/0 (Fa0/0) |
Fast Ethernet 0/1 (Fa0/1) |
Serial 0/0 (S0/0) | Serial 0/1 (S0/1) |
| 2800 | Fast Ethernet 0/0 (Fa0/0) |
Fast Ethernet 0/1 (Fa0/1) |
Serial 0/0/0 (S0/0/0) |
Serial 0/0/1 (S0/0/1) |
| 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. Rather than list all 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 might contain one. For example, for an ISDN BRI interface, the string in parenthesis is the legal abbreviation that can be used in Cisco IOS commands to represent the interface. | ||||
IPv6 Troubleshooting Lab – Answer Key (Instructor Version)
Getting Started
This answer key goes over how to troubleshoot the various problems in the lab. One logical place to start is to make sure that all adjacencies are up and all remote addresses are reachable.
Problem 1: R3–R4 adjacency is not forming.
When you start troubleshooting this lab, one place to start is to use the show ipv6 ospf neighbor command to see which adjacencies have formed. The adjacencies between R1 and R2 and between R2 and R3 have formed, but the adjacency between R3 and R4 has not.
R1# show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 172.16.2.1 1 FULL/ - 00:00:31 5 Serial0/0/0 R2# show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 172.16.3.1 1 FULL/ - 00:00:35 6 Serial0/0/1 172.16.1.1 1 FULL/ - 00:00:35 5 Serial0/0/0 R3# show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 172.16.2.1 1 FULL/ - 00:00:31 6 Serial0/0/1
Neighbor ID 172.16.4.1 is missing.
You can start by looking into this adjacency. To look at which interfaces OSPFv3 is running on and how they are configured, use the show ipv6 ospf interface command.
R3# show ipv6 ospf interface Loopback0 is up, line protocol is up Link Local Address FE80::21B:53FF:FE0D:6028, Interface ID 16 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.3.1 Network Type LOOPBACK, Cost: 1 Loopback interface is treated as a stub Host Serial0/1/0 is up, line protocol is up Link Local Address FE80::21B:53FF:FE0D:6028, Interface ID 7 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.3.1 Network Type POINT_TO_POINT, Cost: 1562 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:08 Index 1/3/3, flood queue length 0 Next 0x0(0)/0x0(0)/0x0(0) Last flood scan length is 0, maximum is 0 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 0, Adjacent neighbor count is 0 Suppress hello for 0 neighbor(s) Serial0/0/1 is up, line protocol is up Link Local Address FE80::21B:53FF:FE0D:6028, Interface ID 6 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.3.1 Network Type POINT_TO_POINT, Cost: 1562 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:05 Index 1/2/2, flood queue length 0 Next 0x0(0)/0x0(0)/0x0(0) Last flood scan length is 2, maximum is 2 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 172.16.2.1 Suppress hello for 0 neighbor(s) R4# show ipv6 ospf interface %OSPFv3: Router process 100 is INACTIVE, please configure a router-id Loopback0 is up, line protocol is up Link Local Address FE80::21B:53FF:FE24:AA72, Interface ID 18 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.4.1 Network Type LOOPBACK, Cost: 1 Loopback interface is treated as a stub Host
The R3 interface serial0/1/0 is configured properly for OSPFv3. However, R4 only shows the loopback interface running OSPFv3. This indicates that there is something wrong with the configuration for the interface or its OSPF configuration. A warning message also appears in the R4 output, which is odd because you should be running OSPFv3 with process number 1 only (as is shown for the loopback interface). However, ignore that for now and look at the interface configuration for R4 serial interface 0/0/0. Remember that OSPFv3 is configured on an interface level.
R4# show run interface serial0/0/0 Building configuration... Current configuration : 102 bytes ! interface Serial0/0/0 bandwidth 64 no ip address ipv6 address FEC0::34:4/112 no fair-queue end
The IPv6 address looks correct, but there is no ipv6 ospf command to associate this interface with OSPF process ID 1 and Area 0. In the show ipv6 ospf interface command output, the error message refers to router process 100.
R4# show ipv6 ospf interface %OSPFv3: Router process 100 is INACTIVE, please configure a router-id Loopback0 is up, line protocol is up Link Local Address FE80::21B:53FF:FE24:AA72, Interface ID 18 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.4.1 Network Type LOOPBACK, Cost: 1 Loopback interface is treated as a stub Host
A check of the initial configuration shows that it specified process ID 100, instead of the correct process ID 1 for this interface. In addition, the router ID was added for OSPF process 1, so process 100 does not have a router ID and is inactive. Because router process 100 is inactive, it cannot run on interface s0/0/0. That is why it does not display with the show run interface command.
Correct the problem using the following commands. You also have the option of removing the extra OSPF process to “clean up” this inconsistency.
R4(config)# no ipv6 router ospf 100 R4(config)# interface serial0/0/0 R4(config-if)# no ipv6 ospf 100 area 0 R4(config-if)# ipv6 ospf 1 area 0 %OSPFv3-5-ADJCHG: Process 1, Nbr 172.16.3.1 on Serial0/0/0 from LOADING to FULL, Loading Done
After this, you should see the adjacency form. Optionally, you also could have moved the loopback interface to this process and configured the router ID, but that would have been more work.
Problem 2: R1 loopback interface is unreachable.
Pings from R2 to the R1 loopback interface at IPv6 address FEC0::1:1 fail.
R2# ping FEC0::1:1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to FEC0::1: 1, timeout is 2 seconds: % No valid route for destination Success rate is 0 percent (0/1)
When you run into this issue, a good place to start is to make sure that the adjacency between R1 and R2 is the way it should be.
R1# show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 172.16.2.1 1 FULL/ - 00:00:31 6 Serial0/0/0 R2# show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 172.16.3.1 1 FULL/ - 00:00:32 7 Serial0/0/1 172.16.1.1 1 FULL/ - 00:00:34 6 Serial0/0/0
The above output looks correct. Issue the show ipv6 route command on R2 to view the routing table.
R2# show ipv6 route IPv6 Routing Table - Default - 10 entries Codes: C - Connected, L - Local, S - Static, U - Per-user Static route B - BGP, M - MIPv6, R - RIP, I1 - ISIS L1 I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary, D - EIGRP EX - EIGRP external O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 C FEC0::2:0/112 [0/0] via Loopback0, directly connected L FEC0::2:1/128 [0/0] via Loopback0, receive O FEC0::3:1/128 [110/1562] via FE80::21B:53FF:FE0D:6028, Serial0/0/1 O FEC0::4:1/128 [110/3124] via FE80::21B:53FF:FE0D:6028, Serial0/0/1 C FEC0::12:0/112 [0/0] via Serial0/0/0, directly connected L FEC0::12:2/128 [0/0] via Serial0/0/0, receive C FEC0::23:0/112 [0/0] via Serial0/0/1, directly connected L FEC0::23:2/128 [0/0] via Serial0/0/1, receive O FEC0::34:0/112 [110/3124] via FE80::21B:53FF:FE0D:6028, Serial0/0/1 L FF00::/8 [0/0] via Null0, receive
The R2 routing table has no route to the FEC0::1:1/112 network, so it is likely that the problem is on R1. Make sure that OSPFv3 is running on the proper interfaces.
R1# show ipv6 ospf interface Serial0/0/0 is up, line protocol is up Link Local Address FE80::21A:2FFF:FEE7:1078, Interface ID 6 Area 0, Process ID 1, Instance ID 0, Router ID 172.16.1.1 Network Type POINT_TO_POINT, Cost: 1562 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:07 Index 1/2/2, flood queue length 0 Next 0x0(0)/0x0(0)/0x0(0) Last flood scan length is 2, maximum is 4 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 172.16.2.1 Suppress hello for 0 neighbor(s)
The serial interface appears to be participating in OSPF correctly, but there is nothing listed for the loopback 0 interface. Examine the interface configuration.
R1# show run interface loopback0 Building configuration... Current configuration : 70 bytes ! interface Loopback0 no ip address ipv6 address FEC0::1:1/112 end
The IPv6 address looks correct, but there is no ipv6 ospf statement. Add it, and the address should become reachable.
R1(config)# interface loopback0 R1(config-if)# ipv6 ospf 1 area 0
Tcl Verification Script
tclsh
foreach address {
FEC0::1:1
FEC0::2:1
FEC0::3:1
FEC0::4:1
FEC0::12:1
FEC0::12:2
FEC0::23:2
FEC0::23:3
FEC0::34:3
FEC0::34:4
} {
ping $address }
R1#tclsh
R1(tcl)#foreach address {
+>(tcl)#FEC0::1:1
+>(tcl)#FEC0::2:1
+>(tcl)#FEC0::3:1
+>(tcl)#FEC0::4:1
+>(tcl)#FEC0::12:1
+>(tcl)#FEC0::12:2
+>(tcl)#FEC0::23:2
+>(tcl)#FEC0::23:3
+>(tcl)#FEC0::34:3
+>(tcl)#FEC0::34:4
+>(tcl)#} {
+>(tcl)#ping $address }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::1:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::2:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::3:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/60 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::4:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 84/84/84 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5) , round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 84/84/88 ms
R1(tcl)#tclquit
R2#tclsh
R2(tcl)#foreach address {
+>(tcl)#FEC0::1:1
+>(tcl)#FEC0::2:1
+>(tcl)#FEC0::3:1
+>(tcl)#FEC0::4:1
+>(tcl)#FEC0::12:1
+>(tcl)#FEC0::12:2
+>(tcl)#FEC0::23:2
+>(tcl)#FEC0::23:3
+>(tcl)#FEC0::34:3
+>(tcl)#FEC0::34:4
+>(tcl)#} {
+>(tcl)#ping $address }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::1:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::2:1, timeout is 2 seconds:
!!! !!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::3:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::4:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
R2(tcl)#tclquit
R3#tclsh
R3(tcl)#foreach address {
+>(tcl)#FEC0::1:1
+>(tcl)#FEC0::2:1
+>(tcl)#FEC0::3:1
+>(tcl)#FEC0::4:1
+>(tcl)#FEC0::12:1
+>(tcl)#FEC0::12:2
+>(tcl)#FEC0::23:2
+>(tcl)#FEC0::23:3
+>(tcl)#FEC0::34:3
+>(tcl)#FEC0::34:4
+>(tcl)#} {
+>(tcl)#ping $address }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::1:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/60 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::2:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::3:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::4:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
R3(tcl)#tclquit
R4#tclsh
R4(tcl)#foreach address {
+>(tcl)#FEC0::1:1
+>(tcl)#FEC0::2:1
+>(tcl)#FEC0::3:1
+>(tcl)#FEC0::4:1
+>(tcl)#FEC0::12:1
+>(tcl)#FEC0::12:2
+>(tcl)#FEC0::23:2
+>(tcl)#FEC0::23:3
+>(tcl)#FEC0::34:3
+>(tcl)#FEC0::34:4
+>(tcl)#} {
+>(tcl)#ping $address }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::1:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 84/84/88 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::2:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/60 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::3:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::4:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 84/84/84 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/56 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::23:3, timeout is 2 seconds:
!! !!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::34:4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
R4(tcl)#tclquit
Device Configurations (Instructor version)
Router R1
hostname R1 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::1:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/0 ipv6 address FEC0::12:1/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.1.1 end
Router R2
hostname R2 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::2:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/0 ipv6 address FEC0::12:2/112 ipv6 ospf 1 area 0 bandwidth 64 no shutdown ! interface Serial0/0/1 ipv6 address FEC0::23:2/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.2.1 end
Router R3
hostname R3 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::3:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/1 ipv6 address FEC0::23:3/112 ipv6 ospf 1 area 0 bandwidth 64 no shutdown ! interface Serial0/1/0 ipv6 address FEC0::34:3/112 ipv6 ospf 1 area 0 clock rate 64000 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.3.1 end
Router R4
hostname R4 ! ipv6 unicast-routing ! interface Loopback0 ipv6 address FEC0::4:1/112 ipv6 ospf 1 area 0 ! interface Serial0/0/0 ipv6 address FEC0::34:4/112 ipv6 ospf 1 area 0 bandwidth 64 no shutdown ! ipv6 router ospf 1 router-id 172.16.4.1 end
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