HP 4800G Series Configuration Manual page 514

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
Length indicator
Version/Protocol ID extension
ID length
R R R
Version
Reserved
Maximum area address
Intradomain Routing Protocol Discriminator: Set to 0x83.
Length Indicator: Length of the PDU header in bytes, including both common and specific headers.
Version/Protocol ID Extension: Set to 1(0x01).
ID Length: Length of the NSAP address and NET ID.
R(Reserved): Set to 0.
PDU Type: For details, refer to
Version: Set to 1(0x01).
Maximum Area Address: Maximum number of area addresses supported.
Table 1-1 PDU type
Type
15 Level-1 LAN IS-IS hello PDU
16 Level-2 LAN IS-IS hello PDU
17 Point-to-Point IS-IS hello PDU
18 Level-1 Link State PDU
20 Level-2 Link State PDU
24 Level-1 Complete Sequence Numbers PDU
25 Level-2 Complete Sequence Numbers PDU
26 Level-1 Partial Sequence Numbers PDU
27 Level-2 Partial Sequence Numbers PDU
No. of Octets
1
1
1
1
1
PDU type
1
1
1
Table 1-1.
PDU Type
1-7
Acronym
L1 LAN IIH
L2 LAN IIH
P2P IIH
L1 LSP
L2 LSP
L1 CSNP
L2 CSNP
L1 PSNP
L2 PSNP