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Bumblebee CPE Pass Through Mode

Writer's picture: Sherry  WeiSherry Wei

Updated: 7 days ago

IP Address Allocation

Bumblebee CPE supports a "Pass Through" mode where the CPE takes up one IP address from the public subnet provided by the carrier and leaves the rest of the addresses to the customer network. All the visibility and monitoring capabilities are preserved.


The table below illustrates the IP addresses distribution for different subnet size allocations from the service provider.

Service Provider WAN subnet

Total IP addresses

Total Usable host addresses

Service Provider default gateway IP

Bumblebee CPE IP address

Customer Network addresses

/28

16

14

1

1

12

/29

8

6

1

1

4



As an example, say the service provider subnet is X.Y.134.112/28 where the default gateway IP address on the service provider side is X.Y.134.113. In this case CPE can be configured to have a management IP address X.Y.134.126. The address pool for customer network is 12 addresses from X.Y.134.114 to X.Y.134.125. The deployment diagram is shown below.



Bumblebee CPE Pass Through Mode deployment
Bumblebee CPE Pass Through Mode Deployment Example

As another example, say the service provider's subnet is X.Y.134.112/29. In this case, the usable host IP address is 6. After taking account of the service provider default gateway IP address and the Bumblebee CPE IP address, the customer will have 4 usable public IP addresses.


Configurations

You can enable Pass Through mode either at CPE create time or later after it has been deployed.


Switch from Router Mode to Pass Through Mode

To switch from Router Mode to Pass Through Mode after it has been deployed, follow the instructions below.


  1. Login to the Bumblebee platform portal

  2. On the left navigation menu, click Intelligent Edge -> CPE Routers.

  3. Select on CPE device from the list view, click Actions -> Edit Network Info

  4. (Fill the Upload speed and Download speed if you have not done so. If these two fields are left unspecified, the default 1000Mbps are assumed)

  5. Select Pass Through radio button. Proceed to the next step.

  6. Unselect DHCP Client if the service provider side default gateway router only supports static IP configuration.

    1. For IP Address field, enter one IP address from the WAN network address pool in CIDR format. For example, X.Y.134.126/28, indicating this is a /28 subnet with X.Y.134.112/28 as its network address range.

    2. For Default Gateway field, enter the default gateway IP address allocated by the service provider. For example, X.Y.134.113

    3. For DNS Server IP(s) field, enter one or multiple DNS server IP address. For example, 8.8.8.8

  7. Click Save

  8. This triggers change. The CPE may or may not go down during this transition. When it comes back up again, the configuration is complete.

  9. To verify the configuration is complete, check the CPE Details in the bottom half of the List view. You should see the configuration of the Management Interface


Specify Pass Through Mode at device creation time

To specify Pass Through Mode at the create time, click the Create Device and select Pass Pass Through. Follow the same steps outlined above to create a device in Pass Through Mode.

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