Will an AR router upgrade be affected in case of a power outage

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Power outage must be avoided during AR router upgrade. In case of such accident, information may be lost, causing the router to fail to start up.

Other related questions:
Alarm reported in the case of power outage and not reported in the case of power resumption
The firewall reports an alarm to the NMS in the case of power outage, but does not report an alarm after the power resumes because the level of the power outage alarm is warnings whereas that of the power resumption alarm is informational. By default, only alarms of the warnings level or higher are reported to the NMS. To enable the firewall to report power resumption alarms to the NMS, perform configuration on the firewall as follows: [USG] info-center source SRM channel trapbuffer trap level informational [USG] info-center source SRM channel snmpagent trap level informational

How is power outage loopback on VGA ports implemented for TE series endpoints?
Power outage loopback on VGA ports is implemented for TE series endpoints as follows: Power outage loopback on an output port refers to the following scenario: Upon power outage, an endpoint functions as a cable adapter and automatically transmits input VGA signals to the output port. One cable and one installation mode apply to multiple scenarios.

How to configure interface mirroring on AR routers
By configuring local interface mirroring (one mirroring interface or multiple mirroring interfaces), you can replicate the packets transmitted through the interface to local monitoring devices for analysis and surveillance.
Note:
Interfaces used in the example are just for reference. Configure local interface mirroring based on actual interface information in practice.
Before configuring local interface mirroring, ensure that the link protocol state of the interface is Up.
In the configuration commands, inbound indicates the inbound mirroring traffic and outbound indicates the outbound mirroring traffic. You can change outbound to inbound in the commands if you need outgoing mirroring traffic.

Scenario 1: Configure local interface mirroring (one mirroring interface)
(1)Configure the observing interface
#Configure GE0/0/1 as the local observing interface on the router.
system-view
[Huawei] observe-port interface gigabitethernet 0/0/1
(2)Configure the mirroring interface
#Configure GE0/0/2 as the mirroring interface, and bind the inbound mirroring traffic to the local observing interface, that is, replicate the packets received by the mirroring interface to the local observing interface.
[Huawei] interface gigabitethernet 0/0/2
[Huawei-GigabitEthernet0/0/2] mirror to observe-port inbound
[Huawei-GigabitEthernet0/0/2] return

For details, select Configuration > CLI-based Configuration > Network Management and Monitoring Configuration Guide >
Mirroring Configuration > Configuration Examples > Example for Configuring 1:1 Local Port Mirroring in the following URL: [http://support.huawei.com/hedex/hdx.do?docid=EDOC1000116356&id=dc_cfg_mirror_1131&text=Example%2520for%2520Configuring%25201%253A1%2520Local%2520Port%2520Mirroring&lang=en">Product Documentation.

Scenario 2: Configure local interface mirroring (multiple mirroring interfaces)
(1)Configure the observing interface
#Configure Eth0/0/1 as the local observing interface on the router.
system-view
[Huawei] observe-port interface ethernet 0/0/1
(2)Configure the mirroring interface.
Configure Eth0/0/0 as the mirroring interface on the router.
[Huawei] interface ethernet 0/0/0
[Huawei-Ethernet0/0/0] mirror to observe-port inbound
[Huawei-Ethernet0/0/0] quit
# Configure Eth0/0/2 as the mirroring interface on the router.
[Huawei] interface ethernet 0/0/2
[Huawei-Ethernet0/0/2] mirror to observe-port inbound
[Huawei-Ethernet0/0/2] return

For details, select Configuration > CLI-based Configuration > Network Management and Monitoring Configuration Guide >
Mirroring Configuration > Configuration Examples > Example for Configuring N:1 Local Port Mirroring in the following URL: Product Documentation.

How do TE endpoints implement power outage loopback on VGA ports?
To implement power outage loopback on VGA ports for TE endpoints: The power outage loopback function on output ports is to automatically transmit input VGA signals to the output port to directly send out signals when an endpoint is powered off. Here, the endpoint functions as the cable converter. The function only uses one cable and one installation method but can apply to multiple scenarios.

How to configure login failure times and lock duration of local accounts on an AR router
By default, the account lock function of an AR router is enabled, the retry interval is five minutes, wrong password retry times are three, and account lock duration is five minutes. The following example exemplifies how to configure login failure times and lock duration for a local account: Set the retry interval to five minutes, wrong password retry times to 3, and account lock duration to five minutes. [Huawei] aaa [Huawei-aaa] local-aaa-user wrong-password retry-interval 5 retry-time 3 block-time 5 If the wrong password retry times are exceeded within the retry interval, a user is locked. Run the local-user < user-name > state active command to unlock the user.

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