a:
Ospf five packets of the head are the same, to distinguish with type fields,
Optional type field has five values, corresponding to:
1 -- -- -- -- -- Hello 2 -- -- -- -- -- 3 -- -- -- -- -- DD LSR 4 - LSU 5 -- -- -- -- -- LsAck
Another way to say :
OSPF LSA type variety, often make people dizzy and sick, and then the OSPF is currently the most widely used IGP agreement, we have to study for it, there are 11 kinds of OSPF LSA types and respectively is:
LSA LSA1 Router Router (lsas)
LSA2
Network LSA (Network LSA)
LSA3 Network summary LSA (Network summary LSA)
LSA4 ASBR summary LSA (ASBR summary LSA)
LSA5
Autonomous systems outside the LSA
(Autonomous system external LSA)
LSA6
Group members LSA (Group membership LSA)
* currently does not support multicast OSPF (MOSPF protocol)
LSA7 NSSA External LSA (NSSA External LSA)
LSA8 BGP External properties of LSA (External attributes the LSA for BGP)
LSA9
Opaque LSA (range), the local link (opaque LSA) * at present is mainly used for MPLS multi-protocol label switching protocol
LSA10 opaque LSA (local area) (opaque LSA)
* at present is mainly used for MPLS multi-protocol label switching protocol
LSA11 opaque LSA (AS) (opaque LSA)
* at present is mainly used for MPLS multi-protocol label switching protocol
My question: OSPF packet head type field determines which LSA types?
CodePudding user response:
The first statement refers to ospf message type, and lsa it doesn't matter, the second said lsu, dd lsa exchange inside information,CodePudding user response:
See rfc2328 LSA TYPECodePudding user response:
I translated a few years ago the latest version of the OSPF OSPFv3 RFC - 5340, I interpret to CSDN on http://download.csdn.net/detail/zhengmx100/9751672CodePudding user response:
I translated a few years ago the latest version of the OSPF OSPFv3 RFC - 5340, I interpret to CSDN on http://download.csdn.net/detail/zhengmx100/9751672CodePudding user response:
You confuse the two concepts:An OSPF baotou by Version, Type, Packet length, RouterID, AreaID, Checksum, Authentication Type, and so on, which occupies the first 8 bit Type parts, value of 1 is labelling is a Hello message, message for 2 is DBD (Database Description) Database state Description, for 3 is LSR (Link - state Request link-state Request Packet), for 4 is LSU (Link - state Update) link-state updates, for 5 is LSAck (Link - state Acknowledgement, link-state confirm package)
LSU packages to OSPF routing updates, reply LSR request, LSU is divided into multiple types of LSA, LSA is the Router lsas type 1, type 2 LSA is a Network of LSA, another way to say what you said is to account for different types of classification of LSU package (CCNP),
Asked by the original poster is decided by the TYPE of OSPF packet head TYPE, if for LSU for 4 package, LSU package and can be divided into different types of LSA, what kind of specific is determined by LSA baotou in the corresponding field,
CodePudding user response: