HPE FlexNetwork HSR6800 Configuration Manual page 140

Figure 44 L1/L2 CSNP format
A PSNP only contains the sequence numbers of one or multiple latest received LSPs. It can
acknowledge multiple LSPs at one time. When LSDBs are not synchronized, a PSNP is used to
request missing LSPs from a neighbor.
Figure 45 L1/L2 PSNP format
Intradomain routing protocol discriminator
Version/Protocol ID extension
R R
CLV
The variable fields of PDU comprise multiple Code-Length-Value (CLV) triplets.
Figure 46 CLV format
Length indicator
ID length
R PDU type
Version
Reserved
Maximum area address
PDU length
Source ID
Variable length fields
No. of Octets
1
1
1
1
1
1
1
1
2
ID length+1
128