IP R
OUTING
C
OMMANDS
-179
Link State ID Router ID of the router that originated the LSA
Advertising Router Advertising router ID
LS Sequence
Number
Sequence number of LSA (used to detect older duplicate LSAs)
LS Checksum Checksum of the complete contents of the LSA
Length The length of the LSA in bytes
Router Role Description of router type, including:
None, AS Boundary Router, Area Border Router, or Virtual Link
Number of Links Number of links described by the LSA
Link ID Link type and corresponding Router ID or network address
Link Data • Router ID for transit network
• Network's IP address mask for stub network
• Neighbor Router ID for virtual link
Link Type Link-state type, including transit network, stub network, or virtual
link
Number of TOS
metrics
Type of Service metric – This router only supports TOS 0 (or normal
service)
Metrics Cost of the link
Field Description