access-speed adjustment system-state threshold ipoe-keepalive

Function

The access-speed adjustment system-state threshold ipoe-keepalive command configures the CPU usage thresholds for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease increase of the slave core and the CPU usage thresholds for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease callback of the slave core.

The undo access-speed adjustment system-state threshold ipoe-keepalive command restores the default value.

By default, the CPU usage threshold for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease increase of the slave core is 90%, and the CPU usage threshold for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease callback of the slave core is 85%.

This command is supported only on the NetEngine 8000 F1A.

Format

access-speed adjustment system-state threshold ipoe-keepalive cpu-usage alarm threshold-value resume threshold-value

undo access-speed adjustment system-state threshold [ ipoe-keepalive cpu-usage [ alarm threshold-value resume threshold-value ] ]

Parameters

Parameter	Description	Value
resume threshold-value	Specifies the resume threshold.	The value is an integer ranging from 1 to 99.
cpu-usage	Indicates the CPU usage of the slave core.	-
alarm threshold-value	Specifies the alarm threshold.	The value is an integer ranging from 2 to 100.

Parameter

Description

Value

resume threshold-value

Specifies the resume threshold.

The value is an integer ranging from 1 to 99.

cpu-usage

Indicates the CPU usage of the slave core.

alarm threshold-value

Specifies the alarm threshold.

The value is an integer ranging from 2 to 100.

Views

AAA view

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
aaa-access	write

Usage Guidelines

Usage Scenario

If the ARP/ND keepalive detection period or DHCPv6 proxy lease period of IPoE is short, the slave core processes packets at a high rate per unit of time. As a result, the CPU usage is high, affecting device performance. By default, the CPU usage threshold for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease increase of the slave core is 90%, and the CPU usage threshold for triggering the ARP/ND keepalive detection period and DHCPv6 proxy lease callback of the slave core is 85%. Run the access-speed adjustment system-state threshold ipoe-keepalive command to change the CPU usage threshold for triggering the ARP/ND keepalive detection period, DHCPv6 proxy lease increase, and callback of the slave core to prevent high CPU usage from affecting other services.

Configuration Impact

Impact on ARP keepalive probe for IPoE users: If the slave core CPU usage of the interface board reaches the alarm threshold and the interval for ARP keepalive probe is less than or equal to 300s, the probe interval doubles. If the slave core CPU usage of the interface board falls below the alarm clear threshold, the ARP keepalive probe interval is restored.
Impact on ND keepalive probe for IPoE users: If the slave core CPU usage of the interface board reaches the alarm threshold and the interval for ND keepalive probe is less than or equal to 300s, the probe interval doubles. If the slave core CPU usage of the interface board falls below the alarm clear threshold, the ND keepalive probe interval is restored.
Impact on DHCPv6 lease proxy users:
Initial state: The proxy lease is not adjusted to the initial state. The CPU detection frequency is 1s. When the slave core CPU usage of the interface board is greater than the alarm threshold, the proxy lease period is extended to 2 minutes and the proxy lease enters the adjustment state.
Adjustment state: The CPU detection frequency is 1 minute. Each time the slave core CPU usage of the interface board is detected, actions are performed using the following rules:
When the proxy lease is adjusted to 2 minutes: If the CPU usage is greater than the alarm threshold, the proxy lease is adjusted to 5 minutes. If the CPU usage falls below the alarm clear threshold, the adjustment state is exited and the initial state is restored. If the CPU usage is greater than or equal to the alarm clear threshold but is less than or equal to the alarm threshold, the proxy lease is retained to 2 minutes.
When the proxy lease is adjusted to 5 minutes: If the CPU usage is greater than or equal to the alarm clear threshold, the proxy lease is retained to 5 minutes. If the CPU usage falls below the alarm clear threshold, the adjustment proxy lease is 2 minutes.
During proxy lease adjustment, if the configured proxy lease period is greater than the adjusted value, adjustment will be performed.

Precautions

In VSmode,this command is supported only by the adminVS.
When the CPU usage is greater than the alarm threshold, the device increases the ARP/ND keepalive detection period and DHCPv6 proxy lease period of IPoE. When the CPU usage is lower than the configured resume threshold, the IPoE ARP/ND keepalive detection period and DHCPv6 proxy lease are call back.

Example

# Configure the CPU usage threshold for triggering IPoE ARP/ND keepalive detection period and DHCPv6 proxy lease increase to 85% and the CPU usage threshold for triggering IPoE ARP/ND keepalive detection period and DHCPv6 proxy lease callback to 80%.

<HUAWEI> system-view
[~HUAWEI] aaa
[~HUAWEI-aaa] access-speed adjustment system-state threshold ipoe-keepalive cpu-usage alarm 85 resume 80