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tech:network:cisco:ospf:stub:stub

Cisco: OSPF Stub Area, Totally Stub Area

Lab 1: 618d7c21-b99a-4aef-ab54-5d1f958572bb

Topology

Base Configuration

Common Configuration Snippet

R1

R2

R3

R4

  1. 618d7c21-ospf-stub-initial-state-r2-ge0-2.pcapng
  2. 618d7c21-ospf-stub-initial-state-r3-ge0-2.pcapng

Standard Area Verification 7cbbd0a8-53f0-4bed-b16f-6da4c2964b89

  • show routing table for OSPF
show ip route ospf
  • show OSPF process summary
show ip protocols | section ospf
  • show LSA Database Sumary
show ip ospf database
  • Wireshark Display Filter Expression
ospf && !ospf.hello
ospf && ospf.lsa.summary
ospf && ospf.lsa.asbr
ospf && ospf.lsa.asext

R2

R3

R4

Stub Area w/o route redisribution Configuration

Stub Area w/o route redisribution Verification 44d7c690-95ca-48ea-bcc2-4fd526fa2c73

This timing, There is no route redistribution.

  1. 618d7c21-44d7c690-standard-area-r2-ge0-2.pcapng
  2. 618d7c21-44d7c690-standard-area-r3-ge0-2.pcapng

R2

R3

R4

Stub Area w/ route redisribution Configuration

  • R3, R4
configure terminal
!
router ospf 1
 area 10 stub
exit
!
end
  • R2
configure terminal
!
router ospf 1
 ! redistribute from eigrp to ospf
 redistribute eigrp 1
exit
!
end

Stub Area w/ route redisribution Verification bcd9f7cd-cd93-4c3a-a8e2-b652d8c8b925

  • show OSPF process summary
show ip protocols | section ospf
  • show LSA Database Sumary
show ip ospf database
  • Wireshark Display Filter Expression
ospf && !ospf.hello
ospf && ospf.lsa.summary
ospf && ospf.lsa.asbr
ospf && ospf.lsa.asext

R1

R2

R3

R4

Totally Stub Area Configuration bb4640f8-9201-4c70-97cc-64a6a12d3809

  • R3 (ABR only)
configure terminal
!
router ospf 1
 area 10 stub no-summary
exit
!
end
  • R3, R4 (All Stub Router Configuraion Needed)
configure terminal
!
router ospf 1
 area 10 stub
exit
!
end
  • R2
configure terminal
!
router ospf 1
 ! redistribute from eigrp to ospf
 redistribute eigrp 1
exit
!
end

Totally Stub Area Verification

  • 618d7c21-bb4640f8-standard-area-r2-ge0-2.pcapng
  • 618d7c21-bb4640f8-standard-area-r3-ge0-2.pcapng
  • show routing table for OSPF
show ip route ospf
  • show OSPF process summary
show ip protocols | section ospf
  • show LSA Database Sumary
show ip ospf database
  • Wireshark Display Filter Expression
ospf && !ospf.hello
ospf && ospf.lsa.summary
ospf && ospf.lsa.asbr
ospf && ospf.lsa.asext

R1

R2

R3

R4

References

tech/network/cisco/ospf/stub/stub.txt · Last modified: 2020/01/04 15:34 by wnoguchi