Use this command to set the number of seconds a router must wait to receive a hello packet from its neighbor before determining that the neighbor is out of service.
| seconds | Specifies the number of seconds that a router must wait to receive a hello packet. Dead interval must be the same on neighboring routers (on a specific subnet), but can vary between subnets. This parameter is an unsigned integer ranging from 1 to 65535. Default: 40 Seconds. |
| minimal | Sets the dead-interval to 1 second for fast hello. |
| hello-multiplier number | Specifies the number of hello-packets that will be sent in 1 second. Valid values are 3 - 20. |
None.
Interface configuration.
By default, hello packets are sent out every 10 seconds. If after 40 seconds, there is no response on the interface, the interface will be shutdown. If for any reason you want a short (minimal) dead interval, entering the minimal keyword sets the dead interval to to a fixed value 1 second and requires you to specify the number of hello packets that will be sent in that 1 second interval. Keep in mind that setting the minimal option can result in a significant increase in OSPF overhead traffic on the network.
The “no” form of this command sets the dead interval value to the default.
This example shows how to set the dead interval to 20 for VLAN 1:
System(rw-config)->interface vlan 1 System(rw-config-intf-vlan.0.1)->ipv6 ospf dead-interval 20
This example shows how to configure fast hello for VLAN 1, hard setting the dead interval to 1 second and specifying that 3 hello packets will be sent in that fixed 1 second interval:
System(rw-config)->interface vlan 1 System(rw-config-intf-vlan.0.1)->ipv6 ospf dead-interval minimal hello-multiplier 3
Print
this page
Email this topic
Feedback
View PDF
Download EPUB