3com S7906E Guide De Référence

 

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Use the isis circuit-type p2p command to configure the network type for an interface as P2P.  

Use the undo isis circuit-type command to cancel the configuration. 

By default, the network type of a switch’s VLAN interface is broadcast.  

Interfaces with different network types operate differently. For example, broadcast interfaces on a 

network need to elect a DIS and flood CSNP packets to synchronize the LSDBs, while P2P interfaces 

on a network need not elect a DIS and have a different LSDP synchronization mechanism. 

If there are only two routers on a broadcast network, you can configure the network type of attached 

interfaces as P2P to avoid DIS election and CSNP flooding, saving network bandwidth and speeding up 

network convergence. 

 

You can perform this configuration only for a broadcast network with only two attached routers. 

 

# Configure the network type of VLAN-interface 10 as P2P.  

<Sysname> system-view 

[Sysname] interface vlan-interface 10 

[Sysname-Vlan-interface10] isis enable 

[Sysname-Vlan-interface10] isis circuit-type p2p 

isis cost value [ level-1 | level-2 ] 

undo isis cost [ level-1 | level-2 ] 

Interface view 

2: System level 

value: Specifies an IS-IS cost for the interface. The cost range differs with cost styles.  

z 

For cost styles narrow, narrow-compatible and compatible, the cost ranges from 1 to 63. 

z 

For cost styles wide and wide-compatible, the cost ranges from 1 to 16777215. 

level-1: Applies the cost to Level-1.  

level-2: Applies the cost to Level-2.