HP MSR2000 series Configuration Manual page 79

Figure 30 LSAck packet format
LSA header format
All LSAs have the same header.
Figure 31 LSA header format
Major fields of the LSA header are as follows:
LS age—Time, in seconds, elapsed since the LSA was originated. An LSA ages in the LSDB (added
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by 1 per second), but does not age during transmission.
• LS type—Type of the LSA.
Link state ID—The contents of this field depend on the LSA's type.
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LS sequence number—Used by other routers to judge new and old LSAs.
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• LS checksum—Checksum of the LSA except the LS age field.
Length—Length in bytes of the LSA, including the LSA header.
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LSAs formats
Router LSA
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