5.2.3.3 Lab - Troubleshooting Basic Single-Area OSPFv2 and OSPFv3.docx

Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 Topology

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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3

Addressing Table !evice

OSPF "outer #!

#nter$ace

#P Address

!e$ault %ate&ay

1!2.1"#.1.1/2$ R1

1.1.1.1

0/0

2001%&'#%ACA&%A%%1/"$

,/A

()#0%%1 lin*+local 1!2.1"#.12.1/30 -0/0/0

2001%&'#%ACA&%12%%1/"$

,/A

()#0%%1 lin*+local 1!2.1#.13.1/30 -0/0/1

2001%&'#%ACA&%13%%1/"$

,/A

()#0%%1 lin*+local 1!2.1"#.2.1/2$ R2

2.2.2.2

0/0

2001%&'#%ACA&%'%%2/"$

,/A

()#0%%2 lin*+local 1!2.1"#.12.2/30 -0/0/0

2001%&'#%ACA&%12%%2/"$

,/A

()#0%%2 lin*+local 1!2.1"#.23.1/30 -0/0/1

2001%&'#%ACA&%23%%2/"$

,/A

()#0%%2 lin*+local 1!2.1"#.3.1/2$ R3

3.3.3.3

0/0

2001%&'#%ACA&%C%%3/"$

,/A

()#0%%3 lin*+local 1!2.1"#.13.2/30 -0/0/0

2001%&'#%ACA&%13%%3/"$

,/A

()#0%%3 lin*+local 1!2.1"#.23.2/30 -0/0/1

2001%&'#%ACA&%23%%3/"$

,/A

()#0%%3 lin*+local PC+A

,C

PC+'

,C

PC+C

,C

1!2.1"#.1.3/2$

1!2.1"#.1.1

2001%&'#%ACA&%A%%A/"$

()#0%%1

1!2.1"#.2.3/2$

1!2.1"#.2.1

2001%&'#%ACA&%'%%'/"$

()#0%%2

1!2.1"#.3.3/2$

1!2.1"#.3.1

2001%&'#%ACA&%C%%C/"$

()#0%%3


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Ob'ectives Part ( Build the )et&or* and Load !evice +on$igurations Part 2( Troubleshoot Layer 3 +onnectivity Part 3( Troubleshoot OSPFv2 Part ,( Troubleshoot OSPFv3

Bac*ground  Scenario en -hortest Path (irst -P( is a lin*+state routing rotocol for P netor*s. -P(v2 is defined for Pv$ netor*s4 and -P(v3 is defined for Pv" netor*s. -P(v2 and -P(v3 are comletel5 isolated routing rotocols4 changes in -P(v2 do not affect -P(v3 routing4 and vice versa. n this lab4 a single+area -P( netor* running -P(v2 and -P(v3 is e6eriencing roblems. 7ou have been assigned to find the roblems ith the netor* and correct them. )ote% The routers used ith CC,A hands+on labs are Cisco 1!$1 ntegrated -ervices Routers -Rs ith Cisco - Release 18.2$93 universal*! image. ther routers and Cisco - versions can be used. &eending on the model and Cisco - version4 the commands available and outut roduced might var5 from hat is shon in the labs. Refer to the Router nterface -ummar5 Table at the end of this lab for the correct interface identifiers. )ote% 9a*e sure that the routers have been erased and ha ve no startu configurations. f 5ou are unsure4 contact 5our instructor.

"e.uired "esources •

3 Routers Cisco 1!$1 ith Cisco - Release 18.2$93 universal image or comarable

•

3 PCs :indos ;4
•

Console cables to configure the Cisco - devices via the console orts

•

)thernet and serial cables as shon in the toolog5

Part ( Build the )et&or* and Load !evice +on$igurations n Part 14 5ou ill set u the netor* toolog5 and configure basic settings on the PC hosts and routers.

Step ( +able the net&or* as sho&n in the topology/ Step 2( +on$igure P+ hosts/ Step 3( Load router con$igurations/ >oad the folloing configurations into the aroriate router. All routers have the same assords. The rivileged )=)C assord is cisco. The assord for console and vt5 access is class. "outer " +on$iguration( conf t service password-encryption no ip domain lookup hostname R1 enable secret class line con 0


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 logging synchronous password cisco login line vty 0 password cisco login banner motd @Unauthorized Access is rohibited!@ ipv" unicast-routing ipv" router ospf 1 router-id 1#1#1#1 passive-interface g0$0 interface g0$0 ip address 1%"'#1#1 &((#&((#&((#0 ipv" address &001)db')acad)a))1$"* ipv" address fe'0))1 link-local interface s0$0$0 clock rate 1&'000 ip address 1%"'#1 &((#&((#&((#0 ipv" address &001)db')acad)1&))1$"* ipv" address fe'0))1 link-local ipv" ospf 1 area 0 no shutdown interface s0$0$1 ip address 1%"'#1+#1 &((#&((#&((#0 ipv" address &001)db')acad)1+))1$"* ipv" address fe'0))1 link-local ipv" ospf 1 area 0 no shutdown router ospf 1 network 1%"'#1#0 0#0#0#&(( area 0 network 1&%#1"'#1� 0#0#0#+ area 0 network 1%"'#1+#0 0#0#0#+ area 0 passive-interface g0$0 end

"outer "2 +on$iguration( conf t service password-encryption no ip domain lookup hostname R& enable secret class line con 0 logging synchronous password cisco login


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 line vty 0 password cisco login banner motd @Unauthorized Access is rohibited!@ ipv" unicast-routing ipv" router ospf 1 router-id &#&#&#& interface g0$0 ip address 1%"'# &((#&((#&((#0 ipv" address &001)db')acad),))&$"* ipv" address fe'0))1 link-local no shutdown interface s0$0$0 ip address 1%"'#1&#& &((#&((#&((#&(& ipv" address &001)db')acad)1&))&$"* ipv" address fe'0))& link-local ipv" ospf 1 area 0 no shutdown interface s0$0$1 clock rate 1&'000 ipv" address &001)db')acad)&+))&$"* ipv" address fe'0))& link-local no shutdown router ospf 1 network 1%"'#� 0#0#0#&(( area 0 network 1%"'#1� 0#0#0#+ area 0 network 1%"'#&+#0 0#0#0#+ area 0 end

"outer "3 +on$iguration( conf t service password-encryption no ip domain lookup enable secret class hostname R+ line con 0 logging synchronous password cisco login line vty 0 password cisco login banner motd @Unauthorized Access is rohibited!@ interface g0$0 ipv" address &001)db')acad)c))+$"*


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 ipv" address fe'0))+ link-local interface s0$0$0 clock rate 1&'000 ip address 1%"'#1+#1 &((#&((#&((#&(& ipv" address &001)db')acad)1+))+$"* ipv" address fe'0))+ link-local no shutdown interface s0$0$1 ip address 1%"'#&+#& &((#&((#&((#&(& ipv" address &001)db')acad)&+))+$"* ipv" address fe'0))+ link-local router ospf 1 network 1%"'#+#0 0#0#0#&(( area 0 passive-interface g0$0 end

Part 2( Troubleshoot Layer 3 +onnectivity n Part 24 5ou ill verif5 that >a5er 3 connectivit5 is established on all interfaces. 7ou ill need to test both Pv$ and Pv" connectivit5 for all device interfaces.

Step ( 1eri$y that the inter$aces listed in the Addressing Table are active and con$igured &ith the correct #P address in$oration/ a.

ssue the sho& ip inter$ace brie$ command on all routers to verif5 that the interfaces are in an u/u state. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

b.

ssue the sho& run inter$ace command to verif5 P address assignments on all router interfaces. Comare the interface P addresses against the Addressing Table and verif5 the subnet mas* assignments. (or Pv"4 verif5 that the lin*+local address has been assigned. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

c.

Resolve all roblems that are found. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? d.

@sing the ping command4 verif5 that each router has netor* connectivit5 ith the serial interfaces on the neighbor routers. a5er 3 issues.

Part 3( Troubleshoot OSPFv2 n Part 34 5ou ill troubleshoot -P(v2 roblems and ma*e the necessar5 changes needed to establish -P(v2 routes and end+to+end Pv$ connectivit5. )ote% >A, 0/0 interfaces should not advertise -P( routing information4 but routes to these netor*s should be in the routing tables.

Step ( Test #Pv, end-to-end connectivity/ (rom each PC host4 ing the other PC hosts in the toolog5 to verif5 end+to+end connectivit5. )ote( t ma5 be necessar5 to disable the PC fireall before testing4 to ing beteen PCs. a. Ping from PC+A to PC+'. :ere the ings successful ?????????????? b. Ping from PC+A to PC+C. :ere the ings successful ?????????????? c.

Ping from PC+' to PC+C. :ere the ings successful ??????????????

Step 2( 1eri$y that all inter$aces are assigned to OSPFv2 area 4 on "/ a.

ssue the sho& ip protocols command to verif5 that -P( is running and that all netor*s are advertised in area 0.

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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 ???????????????????????????????????????????????????????????????????????????????????? b. 9a*e the necessar5 changes to the configuration on R1 based on the outut from the sho& ip protocols command. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.

ssue the clear ip osp$ process command if necessar5.

d. Re+issue the sho& ip protocols command to verif5 that 5our changes had the desired effect. e.

ssue the sho& ip osp$ inter$ace brie$ command to verif5 that all interfaces are listed as -P( netor*s assigned to area 0.

f.

ssue the sho& ip osp$ inter$ace g44 command to verif5 that 0/0 is a assive interface. )ote% This information is also in the sho& ip protocols command.

g. Resolve an5 roblems discovered on R1. >ist an5 additional changes made to R1. f no roblems ere found on the device4 then resond ith Bno roblems ere found. ????????????????????????????????????????????????????????????????????????????????????

Step 3( 1eri$y that all inter$aces are assigned to OSPFv2 area 4 on "2/ a.

ssue the sho& ip protocols command to verif5 that -P( is running and that all netor*s are being advertised in area 0.
b. 9a*e the necessar5 changes to the configuration on R2 based on the outut from the sho& ip protocols command. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.




f.

ssue the sho& ip osp$ inter$ace g44 command to verif5 that 0/0 is a assive interface. )ote% This information is also available from the sho& ip protocols command.

g. Resolve an5 roblems discovered on R2. >ist an5 additional changes made to R2. f no roblems ere found on the device4 then resond ith Bno roblems ere found. ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

Step ,( 1eri$y that all inter$aces are assigned to OSPFv2 area 4 on "3/ a.

ssue the sho& ip protocols command to verif5 that -P( is running and that all netor*s are being advertised in area 0.

Page 6 of 3

Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 ???????????????????????????????????????????????????????????????????????????????????? b. 9a*e the necessar5 changes to the configuration on R3 based on the outut from the sho& ip protocols command. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.




f.

ssue the sho& ip osp$ inter$ace g44 command to verif5 that 0/0 is a assive interface. )ote% This information is also in the sho& ip protocols command.


Step 0( 1eri$y OSPF neighbor in$oration/ a.

ssue the sho& ip osp$ neighbor command on all routers to vie the -P( neighbor information.

Step ( 1eri$y OSPFv2 "outing #n$oration/ a.

ssue the sho& ip route osp$ command to verif5 that each router has -P(v2 routes to all non+adDoining netor*s. Are all -P(v2 routes available ?????????????? f an5 -P(v2 routes are missing4 hat is missing ????????????????????????????

b. f an5 routing information is missing4 resolve these issues.

Step 5( 1eri$y #Pv, end-to-end connectivity/ (rom each PC4 verif5 that Pv$ end+to+end connectivit5 e6ists. PCs should be able to ing the other PC hosts in the toolog5. f Pv$ end+to+end connectivit5 does not e6ist4 then continue troubleshooting to resolve a n5 remaining issues. )ote% t ma5 be necessar5 to disable the PC fireall to ing beteen PCs.

Part ,( Troubleshoot OSPFv3 n Part $4 5ou ill troubleshoot -P(v3 roblems and ma*e the necessar5 changes needed to establish -P(v3 routes and end+to+end Pv" connectivit5. )ote% >A, 0/0 interfaces should not advertise -P(v3 routing information4 but routes to these netor*s should be contained in the routing tables.

Step ( Test #Pv end-to-end connectivity/ (rom each PC host4 ing the Pv" addresses of the other PC hosts in the toolog5 to verif5 Pv" end+to+end connectivit5.


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 )ote% t ma5 be necessar5 to disable the PC fireall to ing beteen PCs.

Step 2( 1eri$y that #Pv unicast routing has been enabled on all routers/ a. An eas5 a5 to verif5 that Pv" routing has been enabled on a router is to use the sho& run 8 section ipv unicast command. '5 adding this ie E section to the sho& run command4 the ipv unicastrouting command disla5s if Pv" routing has been enabled. )ote% The sho& run command can also be issued ithout an5 ie4 and then a manual search for the ipv unicast-routing command can be done. ssue the command on each router. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? b. f Pv" unicast routing is not enabled on one or more routers4 enable it no. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

Step 3( 1eri$y that all inter$aces are assigned to OSPFv3 area 4 on "/ a.

ssue the sho& ipv protocols command and verif5 that the router & is correct. Also verif5 that the e6ected interfaces are disla5ed under area 0. )ote% f no outut is generated from this command4 then the -P(v3 rocess has not been configured. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

b. 9a*e the necessar5 configuration changes to R1. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.

ssue the clear ipv osp$ process command if necessar5.

d. Re+issue the sho& ipv protocols command to verif5 that 5our changes had the desired effect. e.

ssue the sho& ipv osp$ inter$ace brie$ command to verif5 that all interfaces are listed as -P( netor*s assigned to area 0.

f.

ssue the sho& ipv osp$ inter$ace g44 command to verif5 that this interface is set not to advertise -P(v3 routes.



Page 4 of 3


Step ,( 1eri$y that all inter$aces are assigned to OSPFv3 area 4 on "2/ a.

ssue the sho& ipv protocols command and verif5 the router & is correct. Also verif5 that the e6ected interfaces disla5 under area 0. )ote% f no outut is generated from this command4 then the -P(v3 rocess has not been configured. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

b. 9a*e the necessar5 configuration changes to R2. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.




f.

ssue the sho& ipv osp$ inter$ace g44 command to verif5 that this interface is not set to advertise -P(v3 routes.

g. >ist an5 additional changes made to R2. f no roblems ere found on the device4 then resond ith Bno roblems ere found. ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

Step 0( 1eri$y that all inter$aces are assigned to OSPFv3 area 4 on "3/ a.

ssue the sho& ipv protocols command and verif5 that the router & is correct. Also verif5 that the e6ected interfaces disla5 under area 0. )ote% f no outut is generated from this command4 then the -P(v3 rocess has not been configured. Record 5our findings. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????

b. 9a*e the necessar5 configuration changes to R3. Record the commands used to correct the issues. ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????


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Lab – Troubleshooting Basic Single-Area OSPFv2 and OSPFv3 ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????? c.




f.

ssue the sho& ipv osp$ inter$ace g44 command to verif5 that this interface is set not to advertise -P(v3 routes.


Step ( 1eri$y that all routers have correct neighbor ad'acency in$oration/ a.

ssue the sho& ipv osp$ neighbor command to verif5 that adDacencies have formed beteen neighboring routers.

b. Resolve an5 -P(v3 adDacenc5 issues that still e6ist.

Step 5( 1eri$y OSPFv3 routing in$oration/ a.

ssue the sho& ipv route osp$ command4 and verif5 that -P(v3 routes e6ist to all non+adDoining netor*s. Are all -P(v3 routes available ?????????????? f an5 -P(v3 routes are missing4 hat is missing ????????????????????????????

b. Resolve an5 routing issues that still e6ist.

Step 6( 1eri$y #Pv end-to-end connectivity/ (rom each PC4 verif5 that Pv" end+to+end connectivit5 e6ists. PCs should be able to ing each interface on the netor*. f Pv" end+to+end connectivit5 does not e6ist4 then continue troubleshooting to resolve remaining issues. )ote% t ma5 be necessar5 to disable the PC fireall to ing beteen PCs.

"e$lection :h5 ould 5ou troubleshoot -P(v2 and -P(v3 searatel5 ??????????????????????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????


Page 2 of 3


"outer #nter$ace Suary Table "outer #nter$ace Suary "outer 9odel

:thernet #nter$ace ;

:thernet #nter$ace ;2

Serial #nter$ace ;

Serial #nter$ace ;2

1#00

(ast )thernet 0/0 (0/0


-erial 0/0/0 -0/0/0

-erial 0/0/1 -0/0/1

1!00

igabit )thernet 0/0 0/0


-erial 0/0/0 -0/0/0

-erial 0/0/1 -0/0/1

2#01



-erial 0/1/0 -0/1/0

-erial 0/1/1 -0/1/1

2#11



-erial 0/0/0 -0/0/0

-erial 0/0/1 -0/0/1

2!00



-erial 0/0/0 -0/0/0

-erial 0/0/1 -0/0/1

)ote% To find out ho the router is configured4 loo* at the interfaces to identif5 the t5e of router and ho man5 interfaces the router has. There is no a5 to effectivel5 list all the combinations of configurations for each router class. This table includes identifiers for the ossible combinations of )thernet and -erial interfaces in the device. The table does not include an5 other t5e of interface4 even though a secific router ma5 contain one. An e6amle of this might be an -&, 'R interface. The string in arenthesis is the legal abbreviation that can be used in Cisco - commands to reresent the interface.


Page 3 of 3

5.2.3.3 Lab - Troubleshooting Basic Single-Area OSPFv2 and OSPFv3.docx

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