3com S7906E Instruccion De Instalación

 

1-12 

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

 

 

The variable fields of PDU comprise multiple Code-Length-Value (CLV) triplets. 

 shows the 

CLV format. 

Figure 1-13 CLV format 

 

 

 shows that different PDUs contain different CLVs. 

Table 1-2 CLV name and the corresponding PDU type 

1 

Area Addresses 

IIH, LSP 

2 

IS Neighbors (LSP) 

LSP 

4 

Partition Designated Level2 IS 

L2 LSP 

6 

IS Neighbors (MAC Address) 

LAN IIH 

7 

IS Neighbors (SNPA Address) 

LAN IIH 

8 Padding 

IIH 

9 LSP 

Entries 

SNP 

10 

Authentication Information 

IIH, LSP, SNP 

128 

IP Internal Reachability Information 

LSP 

129 

Protocols Supported 

IIH, LSP 

130 

IP External Reachability Information 

L2 LSP 

131 

Inter-Domain Routing Protocol Information 

L2 LSP