ospf timer ldp-sync hold-down multi-area

Function

The ospf timer ldp-sync hold-down multi-area command configures a Hold-down timer for an OSPF multi-area adjacency interface to delay establishing an OSPF neighbor relationship until an LDP session and an LDP adjacency are reestablished.

The undo ospf timer ldp-sync hold-down multi-area command restores the default configuration.

By default, the value of the Hold-down timer is 10s.

Format

ospf timer ldp-sync hold-down value multi-area { area-id | area-id }

undo ospf timer ldp-sync hold-down multi-area { area-id | area-id }

Parameters

Parameter	Description	Value
value	Specifies the Hold-down timer for an OSPF multi-area adjacency interface to delay establishing an OSPF neighbor relationship until an LDP session and an LDP adjacency are reestablished.	The value is an integer ranging from 0 to 65535, in seconds.
area-id	Specifies the ID of an OSPF area.	The value can be a decimal integer ranging from 0 to 4294967295 or in the format of an IP address.

Parameter

Description

Value

value

Specifies the Hold-down timer for an OSPF multi-area adjacency interface to delay establishing an OSPF neighbor relationship until an LDP session and an LDP adjacency are reestablished.

The value is an integer ranging from 0 to 65535, in seconds.

area-id

Specifies the ID of an OSPF area.

The value can be a decimal integer ranging from 0 to 4294967295 or in the format of an IP address.

Views

100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, GMPLS-UNI interface view, Global VE sub-interface view, Tunnel interface view, VE sub-interface view, VLANIF interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
ospf	write

Usage Guidelines

Usage Scenario

If LDP-OSPF synchronization is enabled and the active link recovers from a physical fault, OSPF enters the Hold-down state and starts the Hold-down timer. After the timer expires, an LDP session and an LDP adjacency are reestablished, and traffic is switched back to the active link.

To configure a Hold-down timer for an OSPF multi-area adjacency interface to delay establishing an OSPF neighbor relationship until an LDP session is established, run the ospf timer ldp-sync hold-down multi-area command.

Prerequisites

The ospf enable multi-area command has been run.

Example

# Set the Hold-down timer to 15s for an OSPF multi-area adjacency interface to delay establishing an OSPF neighbor relationship until an LDP session and an LDP adjacency are reestablished.

<HUAWEI> system-view
[~HUAWEI] ospf 1
[*HUAWEI-ospf-1] area 0
[*HUAWEI-ospf-1-area-0.0.0.0] quit
[*HUAWEI-ospf-1] area 1
[*HUAWEI-ospf-1-area-0.0.0.1] quit
[*HUAWEI-ospf-1] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] ospf enable 1 area 0
[*HUAWEI-GigabitEthernet0/1/0] ospf enable multi-area 1
[*HUAWEI-GigabitEthernet0/1/0] ospf timer ldp-sync hold-down 15 multi-area 1