HP 3600 v2 series Configuration Manual page 152

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 3 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 3 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 Level2 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
140
PDU Type
IIH, LSP
LSP
L2 LSP
LAN IIH
LAN IIH
IIH
SNP
IIH, LSP, SNP
LSP
IIH, LSP
L2 LSP
L2 LSP