HP MSR2000 series Configuration Manual page 150

Figure 60 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 61 CLV format
Table 5 shows that different PDUs contain different CLVs. Code 1 to 10 of CLV are defined in ISO 10589
(code 3 and 5 are not shown in the table), and others are defined in RFC 1 195.
Table 5 CLV name and the corresponding PDU type
CLV Code
1
2
4
6
7
8
9
10
128
129
130
131
Length indicator
ID length
R PDU type
Version
Reserved
Maximum area address
PDU length
Source ID
Variable length fields
Name
Area Addresses
IS Neighbors (LSP)
Partition Designated Level 2 IS
IS Neighbors (MAC Address)
IS Neighbors (SNPA Address)
Padding
LSP Entries
Authentication Information
IP Internal Reachability Information
Protocols Supported
IP External Reachability Information
Inter-Domain Routing Protocol Information
No. of Octets
1
1
1
1
1
1
1
1
2
ID length+1
137
PDU Type
IIH, LSP
LSP
L2 LSP
LAN IIH
LAN IIH
IIH
SNP
IIH, LSP, SNP
LSP
IIH, LSP
L2 LSP
L2 LSP