backup up-link track route-monitor-group

Function

The backup up-link track route-monitor-group command configures a vBRAS-UP to track a route monitoring group, detecting network-side link faults.

The undo backup up-link track route-monitor-group command restores the default configuration.

By default, a vBRAS-UP is not configured to track a route monitoring group.

This command is supported only on the NetEngine 8000 F1A.

Format

backup up-link track route-monitor-group route-group-name trigger-down-weight down-weight-value

undo backup up-link track route-monitor-group route-group-name [ trigger-down-weight down-weight-value ]

Parameters

Parameter	Description	Value
route-group-name	Specifies the name of a route monitoring group.	The value is a string of 1 to 31 characters.
trigger-down-weight down-weight-value	Specifies a route weight for reporting a network-side fault.	The value is an integer ranging from 1 to 32000. The value cannot be greater than the weight sum of all Down routes in a route monitoring group.

Parameter

Description

Value

route-group-name

Specifies the name of a route monitoring group.

The value is a string of 1 to 31 characters.

trigger-down-weight down-weight-value

Specifies a route weight for reporting a network-side fault.

The value is an integer ranging from 1 to 32000.

The value cannot be greater than the weight sum of all Down routes in a route monitoring group.

Views

CU-agent view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bras-control	write

Usage Guidelines

Usage Scenario

In a CU separation UP dual-device hot backup scenario, if a network-side route goes Down, the vBRAS-CP cannot detect the Down event and therefore do not switch traffic to the secondary link. As a result, traffic is overloaded or lost. To enable the vBRAS-CP to detect network-side faults, configure a route monitoring group, add network-side routes to the route monitoring group, and run the backup up-link track route-monitor-group command to configure a vBRAS-UP to track the route monitoring group. When detecting a route fault, the vBRAS-UP reports the fault to the vBRAS-CP, triggering a master/backup switchover.

Prerequisites

A route monitoring group has been created using the ip route-monitor-group command in the system view, and routes to be tracked have been added to the route monitoring group using the track ip route command.

Configuration Impact

After the backup up-link track route-monitor-group command is run, user-side services are switched to the secondary link if the weight sum of all Down routes in a specified route monitoring group reaches the value specified by.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

# Configure a vBRAS-UP to track a route monitoring group named test.

<HUAWEI> system-view
[~HUAWEI] cu-agent
[~HUAWEI-cu-agent] backup up-link track route-monitor-group test trigger-down-weight 20