A# sh ip ospf 
 OSPF Routing Process, Router ID: 10.0.0.1
 Supports only single TOS (TOS0) routes
 This implementation conforms to RFC2328
 RFC1583Compatibility flag is disabled
 OpaqueCapability flag is disabled
 Initial SPF scheduling delay 0 millisec(s)
 Minimum hold time between consecutive SPFs 50 millisec(s)
 Maximum hold time between consecutive SPFs 5000 millisec(s)
 Hold time multiplier is currently 1
 SPF algorithm last executed 29m25s ago
 Last SPF duration 17 usecs
 SPF timer is inactive
 Refresh timer 10 secs
 Number of external LSA 0. Checksum Sum 0x00000000
 Number of opaque AS LSA 0. Checksum Sum 0x00000000
 Number of areas attached to this router: 1

 Area ID: 0.0.0.0 (Backbone)
   Number of interfaces in this area: Total: 5, Active: 5
   Number of fully adjacent neighbors in this area: 2
   Area has no authentication
   SPF algorithm executed 8 times
   Number of LSA 3
   Number of router LSA 3. Checksum Sum 0x00009867
   Number of network LSA 0. Checksum Sum 0x00000000
   Number of summary LSA 0. Checksum Sum 0x00000000
   Number of ASBR summary LSA 0. Checksum Sum 0x00000000
   Number of NSSA LSA 0. Checksum Sum 0x00000000
   Number of opaque link LSA 0. Checksum Sum 0x00000000
   Number of opaque area LSA 0. Checksum Sum 0x00000000

B# sh ip ospf 
 OSPF Routing Process, Router ID: 10.0.0.2
 Supports only single TOS (TOS0) routes
 This implementation conforms to RFC2328
 RFC1583Compatibility flag is disabled
 OpaqueCapability flag is disabled
 Initial SPF scheduling delay 0 millisec(s)
 Minimum hold time between consecutive SPFs 50 millisec(s)
 Maximum hold time between consecutive SPFs 5000 millisec(s)
 Hold time multiplier is currently 1
 SPF algorithm last executed 27m08s ago
 Last SPF duration 26 usecs
 SPF timer is inactive
 Refresh timer 10 secs
 Number of external LSA 0. Checksum Sum 0x00000000
 Number of opaque AS LSA 0. Checksum Sum 0x00000000
 Number of areas attached to this router: 1

 Area ID: 0.0.0.0 (Backbone)
   Number of interfaces in this area: Total: 5, Active: 5
   Number of fully adjacent neighbors in this area: 2
   Area has no authentication
   SPF algorithm executed 7 times
   Number of LSA 3
   Number of router LSA 3. Checksum Sum 0x00009867
   Number of network LSA 0. Checksum Sum 0x00000000
   Number of summary LSA 0. Checksum Sum 0x00000000
   Number of ASBR summary LSA 0. Checksum Sum 0x00000000
   Number of NSSA LSA 0. Checksum Sum 0x00000000
   Number of opaque link LSA 0. Checksum Sum 0x00000000
   Number of opaque area LSA 0. Checksum Sum 0x00000000

C# sh ip ospf 
 OSPF Routing Process, Router ID: 10.0.0.3
 Supports only single TOS (TOS0) routes
 This implementation conforms to RFC2328
 RFC1583Compatibility flag is disabled
 OpaqueCapability flag is disabled
 Initial SPF scheduling delay 0 millisec(s)
 Minimum hold time between consecutive SPFs 50 millisec(s)
 Maximum hold time between consecutive SPFs 5000 millisec(s)
 Hold time multiplier is currently 1
 SPF algorithm last executed 29m50s ago
 Last SPF duration 25 usecs
 SPF timer is inactive
 Refresh timer 10 secs
 Number of external LSA 0. Checksum Sum 0x00000000
 Number of opaque AS LSA 0. Checksum Sum 0x00000000
 Number of areas attached to this router: 1

 Area ID: 0.0.0.0 (Backbone)
   Number of interfaces in this area: Total: 5, Active: 5
   Number of fully adjacent neighbors in this area: 2
   Area has no authentication
   SPF algorithm executed 8 times
   Number of LSA 3
   Number of router LSA 3. Checksum Sum 0x00009867
   Number of network LSA 0. Checksum Sum 0x00000000
   Number of summary LSA 0. Checksum Sum 0x00000000
   Number of ASBR summary LSA 0. Checksum Sum 0x00000000
   Number of NSSA LSA 0. Checksum Sum 0x00000000
   Number of opaque link LSA 0. Checksum Sum 0x00000000
   Number of opaque area LSA 0. Checksum Sum 0x00000000


A# sh ip ospf database router 

       OSPF Router with ID (10.0.0.1)

                Router Link States (Area 0.0.0.0)

  LS age: 511
  Options: 0x2  : *|-|-|-|-|-|E|-
  LS Flags: 0x3  
  Flags: 0x0
  LS Type: router-LSA
  Link State ID: 10.0.0.1 
  Advertising Router: 10.0.0.1
  LS Seq Number: 80000009
  Checksum: 0x1cef
  Length: 108
   Number of Links: 7

    Link connected to: Stub Network
     (Link ID) Net: 10.1.1.0
     (Link Data) Network Mask: 255.255.255.0
      Number of TOS metrics: 0
       TOS 0 Metric: 10

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.2
     (Link Data) Router Interface address: 10.1.100.1
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.0
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.3
     (Link Data) Router Interface address: 10.1.100.5
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.4
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 127.0.0.1
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0

    Link connected to: Stub Network
     (Link ID) Net: 10.0.0.1
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0

  LS age: 507
  Options: 0x2  : *|-|-|-|-|-|E|-
  LS Flags: 0x6  
  Flags: 0x0
  LS Type: router-LSA
  Link State ID: 10.0.0.2 
  Advertising Router: 10.0.0.2
  LS Seq Number: 80000009
  Checksum: 0x1de2
  Length: 108
   Number of Links: 7

    Link connected to: Stub Network
     (Link ID) Net: 10.1.2.0
     (Link Data) Network Mask: 255.255.255.0
      Number of TOS metrics: 0
       TOS 0 Metric: 10

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.1
     (Link Data) Router Interface address: 10.1.100.2
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.0
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.3
     (Link Data) Router Interface address: 10.1.100.9
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.8
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 127.0.0.1
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0

    Link connected to: Stub Network
     (Link ID) Net: 10.0.0.2
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0


  LS age: 503
  Options: 0x2  : *|-|-|-|-|-|E|-
  LS Flags: 0x6  
  Flags: 0x0
  LS Type: router-LSA
  Link State ID: 10.0.0.3 
  Advertising Router: 10.0.0.3
  LS Seq Number: 80000009
  Checksum: 0x5d96
  Length: 108
   Number of Links: 7

    Link connected to: Stub Network
     (Link ID) Net: 10.1.3.0
     (Link Data) Network Mask: 255.255.255.0
      Number of TOS metrics: 0
       TOS 0 Metric: 10

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.1
     (Link Data) Router Interface address: 10.1.100.6
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.4
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 10.0.0.2
     (Link Data) Router Interface address: 10.1.100.10
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 10.1.100.8
     (Link Data) Network Mask: 255.255.255.252
      Number of TOS metrics: 0
       TOS 0 Metric: 20

    Link connected to: Stub Network
     (Link ID) Net: 127.0.0.1
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0

    Link connected to: Stub Network
     (Link ID) Net: 10.0.0.3
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metric: 0