Configuring Dynamic Telemetry Subscription (IPv6 Collector)

Usage Scenario

If an IPv6 collector functioning as a client initiates a connection to a device functioning as a server, the data sampled is dynamically subscribed to. In this case, you need to configure the source IPv6 address and port number for listening, and enable the gRPC service.

If the connection that carries dynamic telemetry subscription is interrupted, the device automatically cancels the subscription and stops data sampling and reporting. The configuration cannot be restored unless the collector sends a connection request again. For example, if a user wants to monitor an interface for a period of time, configure dynamic telemetry subscription. To stop monitoring, tear down the connection. The subscription is automatically canceled and cannot be restored. This avoids the long-term load on devices and simplifies the interaction between users and devices.

Pre-configuration Tasks

Before configuring dynamic telemetry subscription, complete the following tasks:

• configure a dynamic routing protocol or static routes to ensure that devices can communicate at the network layer.

• Create a local user, add the user to the administrator group, and configure the service type of the user.

• Create an ACL if you need to configure an ACL for the gRPC IPv6 service to control which clients can connect to the server. For details about how to create an ACL, see "ACL6 Configuration" in Configuration Guide > IP Services.

• Create an SSL policy if you need to configure an SSL policy for the gRPC IPv6 service so that a secure SSL connection can be established between the server and client. For details about how to create an SSL policy, see "Configuring and Binding an SSL Policy" in Configuration Guide > Basic Configuration.

Procedure

1. Run system-view

   The system view is displayed.

2. Run grpc

   The gRPC view is displayed.

3. Run grpc server ipv6

   The IPv6 gRPC server view is displayed.

4. Run source-ip sourceIp [ vpn-instance vpnName ]

   The source IPv6 address to be listened for during dynamic telemetry subscription is configured.

5. (Optional) Run server-port port-number

   The number of the port to be listened for during dynamic telemetry subscription is configured.

6. (Optional) Run acl { acl-name | acl-number }

   An IPv6 ACL is configured for the gRPC service during dynamic telemetry subscription.

7. (Optional) Run idle-timeout time

   The idle timeout interval of the gRPC IPv6 service during dynamic telemetry subscription is set.

8. (Optional) Run ssl-policy policy-name

   An SSL policy is configured for the gRPC IPv6 service during dynamic telemetry subscription.

9. (Optional) Run ssl-verify peer

   The server is configured to perform SSL verification on a client during dynamic telemetry subscription.

10. (Optional) Run dscp value

    A DSCP value is set for data packets to be sent.

11. Run server enable

    The gRPC IPv6 service is enabled.

12. (Optional) Configure a maximum usage for the main control board's CPU used when telemetry collects data.
    1. Run quit

       Return to the gRPC view.

    2. Run quit

       Return to the system view.

    3. Run telemetry

       The telemetry view is displayed.

    4. Run cpu-usage max-percent usage

       A maximum usage is configured for the main control board's CPU used when telemetry collects data.

    

    This command is supported only by the admin VS.

13. Run commit

    The configuration is committed.

Verifying the Configuration

After the preceding configurations are performed and the collector delivers the data sampled, verify the configuration.

Run the display telemetry dynamic-subscription [ subName ] command to check the dynamic subscription information.