H3C vAC1000 User manual

H3C vAC1000 Virtual Access Controller
Cloud Connection Configuration Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com
Software version: R5435P03
Document version: 5W100-20220524

Copyright © 2022, New H3C Technologies Co., Ltd. and its licensors
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.
Trademarks
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this
document are the property of their respective owners.
Notice
The information in this document is subject to change without notice. All contents in this document, including
statements, information, and recommendations, are believed to be accurate, but they are presented without
warranty of any kind, express or implied. H3C shall not be liable for technical or editorial errors or omissions
contained herein.

Preface
The H3C vAC1000 virtual access controller documentation set describes the software features for
the vAC1000 virtual access controller and guide you through the software configuration procedures.
These guides also provide configuration examples to help you apply software features to different
network scenarios.
This configuration guide describes cloud connection configuration tasks.
This preface includes the following topics about the documentation:
•
Audience.
•
Conventions.
•
Documentation feedback.
Audience
This documentation is intended for:
•
Network planners.
•
Field technical support and servicing engineers.
•
Network administrators working with the vAC1000 virtual access controller.
Conventions
The following information describes the conventions used in the documentation.
Command conventions
Convention
Description
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ] Square brackets enclose a set of optional syntax choices separated by vertical bars,
from which you select one or none.
{ x | y | ... } * Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select a minimum of one.
[ x | y | ... ] * Asterisk marked square brackets enclose optionalsyntaxchoices separated by vertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign
can be entered 1 to n times.
# A line that starts with a pound (#) sign is comments.
GUI conventions
Convention
Description
Boldface
Window names, button names, field names, and menu items are in Boldface. For

Convention
Description
example, the New User window opens; click OK.
> Multi-level menus are separated by angle brackets. For example, File > Create >
Folder.
Symbols
Convention
Description
WARNING!
An alert that calls attention to important information that if not understood or followed
can result in personal injury.
CAUTION:
An alert that calls attention to important information that if not understood or followed
can result in data loss, data corruption, or damage to hardware or software.
IMPORTANT:
An alert that calls attention to essential information.
NOTE:
An alert that contains additional or supplementary information.
TIP:
An alert that provides helpful information.
Network topology icons
Convention
Description
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that
supports Layer 2 forwarding and other Layer 2 features.
Represents an access controller, a unified wired-WLAN module, or the access
controller engine on a unified wired-WLAN switch.
Represents an access point.
Represents a wireless terminator unit.
Represents a wireless terminator.
Represents a mesh access point.
Represents omnidirectional signals.
Represents directional signals.
Represents a security product, such as a firewall, UTM, multiservice security
gateway, or load balancing device.
Represents a security module, such as a firewall, load balancing, NetStream, SSL
VPN, IPS, or ACG module.
T
T
T
T

Examples provided in this document
Examples in this document might use devices that differ from your device in hardware model,
configuration, or software version. It is normal that the port numbers, sample output, screenshots,
and other information in the examples differ from what you have on your device.
Documentation feedback
You can e-mail your comments about product documentation to [e-mail].
We appreciate your comments.

i
Contents
Configuring cloud connections·······································································1
About cloud connections····································································································································1
Multiple subconnections·····························································································································1
Cloud connection establishment················································································································1
Configuring the H3C Oasis server ·····················································································································2
Configuring the local device·······························································································································2
Unbinding the device from the Oasis server······································································································3
Display and maintenance commands for cloud connections·············································································4
Cloud connection configuration examples ·········································································································4
Example: Configuring a cloud connection··································································································4

1
Configuring cloud connections
About cloud connections
A cloud connection is a management tunnel established between a local device and the H3C Oasis
server. It enables you to manage the local device from the H3C Oasis server without accessing the
network where the device resides.
Multiple subconnections
After a local device establishes a connection with the H3C Oasis server, service modules on the
local device can establish multiple subconnections with the microservices on the H3C Oasis server.
These subconnections are independent from each other and provide separate communication
channels for different services. This mechanism avoids interference among different services.
Cloud connection establishment
As shown in Figure 1, the cloud connection between the device and the H3C Oasis server is
established as follows:
1. The device sends an authentication request to the H3C Oasis server.
2. The H3C Oasis server sends an authentication success packet to the device.
The device passes the authentication only if the serial number of the device has been added to
the H3C Oasis server. If the authentication fails, the H3C Oasis server sends an authentication
failure packet to the device.
3. The device sends a registration request to the H3C Oasis server.
4. The H3C Oasis server sends a registration response to the device.
The registration response contains the uniform resource locator (URL) used to establish a
cloud connection.
5. The device uses the URL to send a handshake request (changing the protocol from HTTP to
WebSocket) to the H3C Oasis server.
6. The H3C Oasis server sends a handshake response to the device to finish establishing the
cloud connection.
7. After the cloud connection is established, the device automatically obtains the subconnection
URLs and establishes subconnections with the H3C Oasis server based on the service needs.

2
Figure 1 Establishing a cloud connection
Configuring the H3C Oasis server
For a successful cloud connection establishment, add the serial number of the device to be managed
to the H3C Oasis server. For more information about the H3C Oasis server settings, see the
installation guide for the H3C Oasis server.
Configuring the local device
About this task
You can specify a domain name for the H3C Oasis server and log in to the server through the domain
name on a remote PC to manage the local device.
For a device to establish a cloud connection to the Oasis server, perform either of the following tasks:
•
Specify the domain name of the Oasis server on the device through CLI.
•
Configure VLAN interface 1 of the device as a DHCP client and the Oasis server as the DHCP
server. The device obtains the IP address of the DHCP server and parses the option 253 field in
the DHCP packets to obtain the domain name of the Oasis server.
If the local device does not receive a response from the H3C Oasis server within three keepalive
intervals, the device sends a registration request to re-establish the cloud connection.
To prevent NAT entry aging, the local device sends ping packets to the H3C Oasis server
periodically.
Restrictions and guidelines
You can specify one primary server by using the cloud-management server domain
command and a maximum of eight backup servers by repeating the cloud-management
backup-server domain command.
When establishing a cloud connection, the device connects to one of the primary and backup servers
according to the sequence in which they are specified. The first specified server has the highest
priority. When the connected server fails, the device switches to another server and does not switch
Cloud connection
Registration request
Registration response
Device
Handshake request
Handshake response
H3C Oasis server
Authentication request
Authentication success packet

3
back to the original server even if the original server recovers. To view the connected server, execute
the display cloud-management state command.
The domain name obtained through DHCP has a higher priority than the domain name configured
manually.
If a device obtains the domain name of the Oasis server through DHCP after establishing a cloud
connection to the Oasis server with the manually configured domain name, the device performs the
following tasks:
•
If the automatically obtained and manually configured domain names are identical, the device
retains the cloud connection.
•
If the automatically obtained and manually configured domain names are different, the device
tears down the cloud connection and then establishes a cloud connection to the Oasis server
with the automatically obtained domain name.
Reduce the ping interval value if the network condition is poor or the NAT entry aging time is short.
Prerequisites
Before configuring this feature, make sure a DNS server is configured to translate domain names.
To obtain the domain name of the Oasis server automatically, first configure the option 253 field as
the domain name of the Oasis server.
Procedure
1. Enter system view.
system-view
2. Configure the domain name of the H3C Oasis server.
cloud-management server domain domain-name
By default, the domain name of the H3C Oasis server is not configured.
3. (Optional.) Specify a backup H3C Oasis server by its domain name.
cloud-management backup-server domain domain-name
By default, no backup H3C Oasis server is specified.
4. (Optional.) Set the keepalive interval.
cloud-management keepalive interval
By default, the keepalive interval is 180 seconds.
5. (Optional.) Set the ping interval.
cloud-management ping interval
By default, the ping interval is 60 seconds.
6. (Optional.) Specify the TCP port number used to establish cloud connections.
cloud-management server port port-number
By default, the TCP port number used to establish cloud connections is 19443.
Unbinding the device from the Oasis server
About this task
A device can be registered on the Oasis server by only one user.
To register a device that has been registered by another user, you need to take the following steps:
1. Obtain a verification code for device unbinding from the Oasis server.
2. Execute the command on the device for sending the verification code to the Oasis server.
3. Register the device on the Oasis server.

4
Procedure
1. Enter system view.
system-view
2. Send the verification code for device unbinding to the Oasis server.
cloud-management unbinding-code code
Display and maintenance commands for cloud
connections
Execute display commands in any view.
Task Command
Display cloud connection state information.
display cloud-management
state
Cloud connection configuration examples
Example: Configuring a cloud connection
Network configuration
As shown in Figure 2, configure the AC to establish a cloud connection with the H3C Oasis server.
Figure 2 Network diagram
Procedure
1. Configure IP addresses for interfaces as shown in Figure 2, and configure a routing protocol to
make sure the devices can reach each other. (Details not shown.)
2. Log in to the H3C Oasis server to add the serial number of the AC to the server. (Details not
shown.)
3. Configure the domain name of the H3C Oasis server as oasis.h3c.com.
<AC> system-view
[AC] cloud-management server domain oasis.h3c.com
NOTE:
The DNS service is provided by the ISP DNS server.
IP network
Cloud connection
AC H3C Oasis server
Switch Gateway
GE1/0/1
10.0.0.1/24
139.217.27.153/24
PC