H3C LS-3100-52P-OVS-H3 Operation Manual - page 621
Manual is about: S5500-EI Series Ethernet Switches
of
1918
1-11
Figure 1-11 L1/L2 CSNP format
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 new LSPs
from neighbors.
Figure 1-12
shows the PSNP packet format.
Figure 1-12 L1/L2 PSNP format
Intradomain routing protocol discriminator
Reserved
Version
R
ID length
Version/Protocol ID extension
Length indicator
Maximum area address
R
R
PDU type
No. of Octets
1
1
1
1
1
1
1
1
PDU length
Source ID
Variable length fields
2
ID length+1
CLV
The variable fields of PDU comprise multiple Code-Length-Value (CLV) triplets.
Figure 1-13
shows the
CLV format.