3com S7906E Guide De Référence

 

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Use the ospf trans-delay command to set the LSA transmission delay on an interface.  

Use the undo ospf trans-delay command to restore the default. 

The delay defaults to 1s. 

Each LSA in the LSDB has an age that is incremented by 1 every second, but the age does not change 

during transmission. It is necessary to add a transmission delay into its age time, which is important for 

low speed networks. 

This configuration is not supported on the null interface. 

# Set the LSA transmission delay to 3 seconds on the current interface. 

<Sysname> system-view 

[Sysname] interface vlan-interface 10 

[Sysname-Vlan-interface10] ospf trans-delay 3 

peer ip-address [ dr-priority dr-priority ] 

undo peer ip-address 

OSPF view 

2: System level 

ip-address: Neighbor IP address. 

dr-priority: Neighbor DR priority, in the range 0 to 255.  

Use the peer command to specify a neighbor, and the DR priority of the neighbor.  

Use the undo peer command to remove the configuration. 

On an Frame Relay network, you can configure mappings to make the network fully meshed (any two 

routers have a direct link in between), so OSPF can handle DR/BDR election as it does on a broadcast 

network. However, since routers on the network cannot find neighbors via broadcasting hello packets, 

you need to specify neighbors and neighbor DR priorities on the routers. 

After startup, a router sends a hello packet to neighbors with DR priorities higher than 0. When the DR 

and BDR are elected, the DR will send hello packets to all neighbors for adjacency establishment. 

A router uses the priority set with the peer command to determine whether to send a hello packet to the 

neighbor rather than for DR election. The DR priority set with the ospf dr-priority command is used for 

DR election. 

Related commands: ospf dr-priority.