3com 5500-ei pwr Instruccion De Instalación

 

4-16 

Create and configure a virtual 
link 

vlink-peer router-id [ hello 
seconds | retransmit 
seconds | trans-delay 
seconds | dead seconds | 
simple password | md5 
keyid key ] * 

Optional 

For a virtual link to take effect, you 
need to use this command at both 
ends of the virtual link and ensure 
consistent configurations of the 
hello, dead, and other 
parameters at both ends. 

 

z 

You must use the stub command on all the routers connected to a stub area to configure the area 

with the stub attribute.  

z 

You must use the nssa command on all the routers connected to an NSSA area to configure the 

area with the NSSA attribute.  

 

OSPF divides networks into four types by link layer protocol. See section 

0  

"

OSPF Network Type

". An 

NBMA network must be fully connected. That is, any two routers in the network must be directly 

reachable to each other through a virtual circuit. However, in many cases, this cannot be implemented 

and you need to use a command to change the network type forcibly.  

Configure the network type of an interface as P2MP if not all the routers are directly accessible on an 

NBMA network. You can also configure the network type of an interface to P2P if the router has only one 

peer on the NBMA network. 

In addition, when configuring a broadcast network or NBMA network, you can also specify DR election 

priority for each interface of a router to control the DR/BDR election in the network. Thus, the router with 

higher performance and reliability can be selected as a DR or BDR. 

Before configuring the network type of an OSPF interface, perform the following tasks:  

z 

Configuring the network layer address of the interface so that the adjacent node is reachable at 

network layer 

z 

Performing basic OSPF configuration 

Follow these steps to configure the network type of an OSPF interface: 

Enter system view 

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