Cisco Cisco IOS Software Release 12.2(15)T
OSPF Support for Fast Hello Packets
How to Configure OSPF Fast Hello Packets
3
Cisco IOS Release: Multiple releases (see the Feature History table)
Benefits of OSPF Fast Hello Packets
The benefit of the OSPF Fast Hello Packets feature is that your OSPF network will experience faster
convergence time than it would without fast hello packets. This feature allows you to detect lost
neighbors within 1 second. It is especially useful in LAN segments, where neighbor loss might not be
detected by the Open System Interconnection (OSI) physical layer and data-link layer.
convergence time than it would without fast hello packets. This feature allows you to detect lost
neighbors within 1 second. It is especially useful in LAN segments, where neighbor loss might not be
detected by the Open System Interconnection (OSI) physical layer and data-link layer.
How to Configure OSPF Fast Hello Packets
The following section describes how to enable OSPF fast hello packets:
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Configuring OSPF Fast Hello Packets
This section describes how to configure OSPF fast hello packets.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
interface type number
4.
ip ospf dead-interval minimal hello-multiplier multiplier
5.
end
6.
show ip ospf interface [interface-type interface-number]
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables higher privilege levels, such as privileged EXEC
mode.
mode.
Enter your password if prompted.
Step 2
configure
terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
interface
type number
Example:
Router(config)# interface ethernet 0
Configures an interface type and enters interface
configuration mode.
configuration mode.