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Safety & Configuration Cautions and Guidelines
Document version: 5W101-20210408
Copyright © 2021 New H3C Technologies Co., Ltd. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd.
The information in this document is subject to change without notice.
Controller safety & configuration cautions and guidelines
Introduction
Only trained and qualified personnel are allowed to do the configuration tasks described in this guide. This guide contains important information that if not understood or followed can result service anomalies or interruption. Before you perform high-risk tasks, read the information in this document carefully and apply for a cutover time window.
High-risk tasks
IMPORTANT: The operation paths vary by software version. |
Table 1 High-risk tasks
Controller |
Operation path |
Task |
Risks |
SeerEngine-DC |
Provision > Inventory > Devices > Physical Devices > Switching Device Data Sync Details > Data Sync |
Manually synchronize the configuration between the controller and its incorporated devices. |
When you click Data Sync, a dialog box that prompts the risks opens. Data synchronization might add, delete, or edit the configuration on devices. For example, data synchronization might delete the configuration only on a device but not on the controller, which might interrupt some services. |
SeerEngine-DC |
Provision > Network Design > Fabrics > Settings > Settings > Advanced Settings > Reply by Device/Proxy ARP/ND on Device |
Edit the way a device replies to ARP requests from hosts. |
Editing the way a device replies to ARP requests affects ARP packet forwarding, which might affect the specific services. |
SeerEngine-DC |
System > Parameters > ARP > Edit > Host Aging Time |
Edit the ARP aging time. |
By default, the ARP aging time is 0, which means that ARP entries do not age out. Editing the ARP aging time might bring vPorts offline and delete access configuration for the corresponding subnets on devices, which might affect the specific services. |
SeerEngine-DC |
Tenants > Common Network Settings > Virtual Distributed Switches > Edit Virtual Distributed Switch > Advanced Settings |
Edit the advanced parameters for a VDS. |
Editing the advanced settings for a VDS might affect the specific services. |
SeerEngine-DC |
System > Parameters > Firewalls > Edit > Enable Security Policy |
Change the type of firewall policies deployed. |
By default, the controller deploys security policies to firewalls. If you change the type of firewall policies deployed to object policy, the firewalls might operate incorrectly. Changing the type of firewall policies deployed to security policy might also cause firewalls to operate incorrectly. |
DR2000 |
Service > General Groups > Auto Import Devices and Interfaces |
Identify the roles of devices and deploy configurations to devices by role. |
Unexpected configurations might be deployed to devices. |
SeerEngine-Campus |
Provision > Inventory > Devices > Physical Devices > Switching Device Data Sync Details > Data Sync |
Manually synchronize the configuration between the controller and its incorporated devices. |
When you click Data Sync, a dialog box that prompts risks opens. Data synchronization might add, delete, or edit the configuration on devices. For example, data synchronization might delete the configuration only on a device but not on the controller, which might interrupt some services. |
SeerEngine-Campus |
Provision > Inventory > Templates > Underlay Automation Control > Enable/Bulk Enable |
On this page, you can enable automation again on devices where automation has stopped. |
After automation is enabled for devices, the controller deploys configurations to devices based on the topology changes, which might affect services. |
SeerEngine-WAN |
Assurance > Configuration Audit > Configuration Audit > Configuration Audit Results > Sync |
Manually synchronize the configuration between the controller and its incorporated devices. |
When you click Sync, a dialog box that prompts the risks opens. Data synchronization might add, delete, or edit the configuration on devices. For example, data synchronization might delete the configuration only on a device but not on the controller, which might interrupt some services. |
SeerEngine-SDWAN |
Assurance > Configuration Audit > Configuration Audit > Configuration Audit Results > Sync |
Manually synchronize the configuration between the controller and its incorporated devices. |
When you click Sync, a dialog box that prompts the risks opens. Data synchronization might add, delete, or edit the configuration on devices. For example, data synchronization might delete the configuration only on a device but not on the controller, which might interrupt some services. |
All controllers |
System > License > Disconnect |
Disconnect the controller from the license server. |
After you manually disconnect the controller from the license server, the controller will not enter fail-safe state, which will invalidate licenses and might affect services. |
All controllers |
CLI in the operating system |
All non-query commands executed in the CLI of the operating system except for the commands in the routine inspection guide. |
Operating the processes and files related to the controller in the CLI of the operating system might cause the controller to operate incorrectly. |
All controllers, SeerAnalyzer |
CLI in the operating system |
Power off a server |
Powering off the server in the CLI of operating system might cause database exceptions. Therefore, before powering off a controller/SeerAnalyzer server, you must follow the powering on/off guidelines in the user guide. |