H3C LS-3100-52P-OVS-H3 Operation Manual - page 617
1-7
Figure 1-5 PDU format
Common header format
Figure 1-6
shows the PDU common header format.
Figure 1-6 PDU common header 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
z
Intradomain Routing Protocol Discriminator: Set to 0x83.
z
Length Indicator: Length of the PDU header in bytes, including both common and specific headers.
z
Version/Protocol ID Extension: Set to 1(0x01).
z
ID Length: Length of the NSAP address and NET ID.
z
R(Reserved): Set to 0.
z
PDU Type: For details, refer to
Table 1-1
.
z
Version: Set to 1(0x01).
z
Maximum Area Address: Maximum number of area addresses supported.
Table 1-1 PDU type
Type
PDU Type
Acronym
15
Level-1 LAN IS-IS hello PDU
L1 LAN IIH
16
Level-2 LAN IS-IS hello PDU
L2 LAN IIH
17
Point-to-Point IS-IS hello PDU
P2P IIH
18
Level-1 Link State PDU
L1 LSP
20
Level-2 Link State PDU
L2 LSP
24
Level-1 Complete Sequence Numbers PDU
L1 CSNP
25
Level-2 Complete Sequence Numbers PDU
L2 CSNP
26
Level-1 Partial Sequence Numbers PDU
L1 PSNP
27
Level-2 Partial Sequence Numbers PDU
L2 PSNP