3com 5500-ei pwr Guia De Referência
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ospf timer hello
Syntax
ospf timer hello
seconds
undo ospf timer hello
View
Interface view
Parameters
seconds
: Interval, in seconds, at which an interface transmits hello packet. It ranges from 1 to 255.
Description
Use the ospf timer hello command to configure the interval for transmitting Hello messages on an
interface.
interface.
Use the undo ospf timer hello command to restore the interval to the default.
By default, the Hello interval is
z
10 seconds for an interface of p2p or broadcast
z
30 seconds for an interface of p2mp or nbma
Hello packets are periodically sent to find and maintain neighbors and used for DR/BDR election. The
hello seconds value
must be identical on interfaces attached to the same network segment. Otherwise,
neighbor relationships cannot be established between routers.
Related commands: ospf timer dead.
Examples
# Configure the interval of transmitting Hello messages on the interface VLAN-interface 10 to 20
seconds.
seconds.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] ospf timer hello 20
ospf timer poll
Syntax
ospf timer poll
seconds
undo ospf timer poll
View
Interface view
Parameters
seconds
: Poll Hello interval in seconds. It ranges from 1 to 65535.