ospf peer hold-max-cost timer

Function

The ospf peer hold-max-cost timer command sets a period during which OSPF keeps the maximum cost in local LSAs.

The undo ospf peer hold-max-cost timer command restores the default configuration.

By default, no such a period is set after an OSPF neighbor relationship is established.

Format

ospf peer hold-max-cost timer timer

undo ospf peer hold-max-cost timer [ timer ]

Parameters

Parameter	Description	Value
timer timer	Specifies a period during which OSPF keeps the maximum cost in local LSAs.	The value is an integer ranging from 100 to 1000000, in milliseconds.

Parameter

Description

Value

timer timer

Specifies a period during which OSPF keeps the maximum cost in local LSAs.

The value is an integer ranging from 100 to 1000000, in milliseconds.

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, VBDIF 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

When an OSPF interface changes from Down to Up, the OSPF neighbor relationship is re-established. When IGP route convergence ends, traffic is switched back. IGP routes converge fast. Many services that depend on IGP routes may require a delayed switchback. In this case, you can run the ospf peer hold-max-cost command so that OSPF keeps the maximum cost in local LSAs for a specified period after the OSPF neighbor relationship reaches Full state. During this period, the traffic forwarding path remains unchanged. After this period elapses, the original cost is restored, and traffic is switched back.

Example

# Set the period during which OSPF keeps the maximum cost in local LSAs on GE 0/1/0 to 1000 ms.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet 0/1/0
[~HUAWEI-GigabitEthernet0/1/0] ospf peer hold-max-cost timer 1000