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OSPF with two ABR

Please help me with this. 

 

 

r1-----r3------r5

|                         |

r2-----r4------r6

 

see the attachment for the diagram also 

R1 R3 and R5 is Area 0

R2 R4 and R6 is Area 1

 

Please, someone explain the database. 

 


Router#show ip ospf database
OSPF Router with ID (23.0.0.1) (Process ID 10)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count
45.0.0.2 45.0.0.2 905 0x80000002 0x00484e 1
45.0.0.1 45.0.0.1 890 0x80000004 0x00de77 2
23.0.0.1 23.0.0.1 778 0x80000006 0x009656 1

Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
45.0.0.2 45.0.0.2 905 0x80000001 0x007b25
23.0.0.1 23.0.0.1 890 0x80000001 0x00d80c

Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
34.0.0.0 45.0.0.2 962 0x80000001 0x0035d7
12.0.0.0 45.0.0.2 962 0x80000002 0x005cc4
12.0.0.0 23.0.0.1 761 0x80000004 0x001b1c
34.0.0.0 23.0.0.1 756 0x80000005 0x00041b

Summary ASB Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
23.0.0.1 45.0.0.1 771 0x80000002 0x00a670
23.0.0.1 45.0.0.2 771 0x80000003 0x009e76
23.0.0.1 23.0.0.1 766 0x80000003 0x006bc0

Router Link States (Area 1)

Link ID ADV Router Age Seq# Checksum Link count
45.0.0.1 45.0.0.1 922 0x80000004 0x003f88 1
45.0.0.2 45.0.0.2 967 0x80000003 0x007f2c 1
23.0.0.1 23.0.0.1 767 0x80000005 0x00db27 1
34.0.0.1 34.0.0.1 767 0x80000004 0x004256 2

Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
23.0.0.1 23.0.0.1 975 0x80000001 0x00befe
34.0.0.2 45.0.0.2 967 0x80000001 0x001f0a
12.0.0.2 34.0.0.1 767 0x80000001 0x00f76f

Summary Net Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
23.0.0.0 23.0.0.1 885 0x80000003 0x008d9f
45.0.0.0 23.0.0.1 885 0x80000004 0x00769e
45.0.0.0 45.0.0.2 962 0x80000001 0x00a55c
23.0.0.0 45.0.0.2 897 0x80000002 0x00cc49

Summary ASB Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
23.0.0.1 23.0.0.1 772 0x80000007 0x0063c4
23.0.0.1 34.0.0.1 772 0x80000001 0x000c17
23.0.0.1 45.0.0.2 772 0x80000003 0x009e76
Router#

Please do not hesitate to click the STAR button if you are satisfied with my answer.
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1 REPLY 1
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Re: OSPF with two ABR

@networkchef,

Greetings,

I would prefer that you check this link:

https://community.cisco.com/t5/networking-documents/reading-and-understanding-the-ospf-database/ta-p/3145995

 

It should answer all your questions deeply!

 

Please don't forget to rate all helpful responses and mark solutions!

Bst Rgds,

Andrew Khalil

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