泰克-OSPF

OSPF

一、邻接建立的七中状态及用途

1、Init

2、Twoway

1. P2PMA
2. 用途是什么
3. DRwait
4. P2PMA

3Exstart

a.   ?

B.DBD

C.

4Exchange

   A.DBD

5Loading

   A.LSR

6Full

   a.LSR

   B.DBD

   C.LSDB

7

   A.DNADC

   B.virtual-link

OSPF

1HelloOSPFDRBDR

2DDDDLSDBLSDBLSAHeaderLSAHeaderLSALSALSA HeaderLSALSA HeaderLSADDMasterSlaveMasterDD1SlaveMaster

3LSRDDLSRLSALSA

4LSULSULSALSALSAFloodingLSAckLSALSA

5LSAckLSAckLSULSAHeaderLSAckLSA

 

三、数据报文格式

Hello

hello packet 1 DBD2   LSR3   LSU4  LSACK5

 

Hello Packet

LSAIDRouter-LSA

LSRLSA

 

Network Mask 32 Hello

 

HelloInterval 16 Hello

 

Options 8

 

可选项：

 

EFlood AS-External-LSAs

 

MCIP

 

N/PType-7 LSAs

 

DC

 

Rtr Pri 8 DR10DRBDR

 

RouterDeadInterval 32 Hello

 

Designated Router 32 DR

 

Backup Designated Router 32 BDR

 

Neighbor 32 Router ID

 

OSPF Hello

 

 

 

 

1、LSA1Router Link

 

2. P2P:
3. TransitDR
4. Stub
5. Vitrual-link
6. 用途讲解

 

2、LSA2Network

 

1. DR
2. DRBDR
3. MA

 

3LSA3network summary

 

   A.ABRLSA

 

4LSA4ASBR summary

 

   A.ABR

 

   B.

 

5LSA5external

 

   A.ASBR

 

   B.

 

6LSA7NSSA external

 

   A.NSSAASBR

 

   B.

 

 

 

 

 

 

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文章来源: 泰克-OSPF