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Point-to-Multipoint (P2M) transport service
Point-to-Multipoint (E-tree in the MEF classification, hereinafter also referred to as the P2M service) is a transport service involving a single service interface of a CPE device transmitting traffic in a centralized way to multiple interfaces on top of an Ethernet network based on a tree topology.
The hierarchical structure of the P2M service simplifies network management, ensures the reliability of data transfer without duplication, and improves the scalability of the network by accommodating new devices.
When creating a P2M service, you must assign one of the following roles to each service interface:
- Root is a service interface that can send traffic to interfaces with any role. At least one service interface must be assigned this role.
- Leaf is a service interface that can send traffic only to interfaces with the Root role.
Frames complying with the IEEE 802.1Q and 802.1AD standards can be transmitted.
Creating a P2M service
Before creating a P2M service, you must complete the following steps:
- Activate CPE devices.
- Create a constraint (Manual-TE or threshold).
- Create service interfaces.
- Define the topology of the transport service and assign roles to service interfaces.
- Create a traffic filter.
- Create a group of OpenFlow interfaces.
- Create a QoS rule.
To create a P2M transport service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- In the upper part of the page, click + P2M service.
- This opens a window; in that window, in the Name field, enter the name of the transport service.
- In the Constraint drop-down list, select a previously created constraint that you want to add to the transport service.
- In the Balancing mode drop-down list, select the balancing mode for evenly distributing traffic among the tunnels to prevent congestion of individual tunnels and prevent performance issues for users:
- Per-flow — Balancing across flows (sessions). During transmission, flows are evenly distributed across the tunnels. This is the default setting.
- Per-packet — Per-packet balancing. During transmission, packets are distributed evenly across the tunnels.
- Broadcast — Packets are sent to all tunnels simultaneously to prevent losses.
- In the MAC learn mode drop-down list, select the action to apply to a series of frames when the first frame is sent to the SD-WAN controller to learn the source MAC address:
- Learn and flood means the controller remembers the MAC address of the source and checks for the presence of the destination MAC address in the MAC address table. If the destination MAC address is not in the table, the series of frames is sent to all service interfaces added to the transport service, except for the interface on which the series of frames originally arrived. This is the default setting.
- Learn and drop means the controller remembers the MAC address of the source and checks for the presence of the destination MAC address in the MAC address table. If the destination MAC address is not in the table, the series of frames is dropped.
In both cases, if the destination MAC address is present in the MAC address table, the series of frames is sent to the corresponding service interface.
- In the MAC age (sec.) field, enter the time period in seconds during which entries are kept in the MAC table on the SD-WAN Controller. Range of values: 10 to 65,535. The default setting is
300
. - In the MAC table overload drop-down list, select the policy for processing new MAC addresses when the MAC table SD-WAN Controller is full:
- Flood means traffic with destination MAC addresses that have not been learned previously is transmitted as BUM traffic (Broadcast, unknown-unicast, and multicast). This is the default setting.
- Drop means that traffic with previously destination MAC addresses that have not been learned previously is dropped.
- In the MAC table size field, enter the maximum number of entries in the MAC table on the SD-WAN controller. Range of values: 0 to 65,535.
0
means the number of entries is not limited. The default setting is100
. - In the Mode drop-down list, select whether you want to use the Default Forwarding Interface (hereinafter referred to as DFI) in the transport service. If the DFI role is assigned to a service interface, all unknown unicast traffic is sent to that service interface. Possible values:
- Classic if you do not want to use DFI. This is the default setting.
- DFI with FIB on root and leafs if you want to use DFI on the service interface with the Root role. The number of service interfaces with the Leaf role is not limited. Backup service interfaces can be added for each service interface.
- DFI with FIB on leaf if you want to use DFI on the service interface with the Root role. The number of service interfaces with the Leaf role is not limited. Service interfaces with the Leaf role must be on the same CPE device. Backup service interfaces can be added for each service interface. Backup service interfaces with the Leaf role must be on the same CPE device, which must be different from the device hosting the primary service interfaces.
- If necessary, in the Description field, enter a brief description of the transport service.
- Click Next to proceed to the next group of settings.
- In the Switch and Port drop-down lists on the right, select the CPE device and the service interface that you want to add to the transport service.
- To display service interfaces that were previously added to transport services in the Port drop-down list, select the Show used interfaces check box. This check box is cleared by default.
- In the QoS drop-down list, select the previously created QoS rule for the service interface.
- In the Inbound filter drop-down list, select the previously created traffic filter for the service interface.
- In the Role drop-down list, select the role of the service interface:
- Leaf
- Root
- If necessary, add a backup service interface through which traffic must be transmitted if the primary interface goes out of service:
- Select the Use backup interface check box. This check box is cleared by default.
- In the Backup switch and Backup port drop-down lists, select the CPE device and the service interface created on it that you want to use as the backup service interface.
- To display service interfaces that were previously added to transport services in the Backup port drop-down list, select the Show used interfaces check box. This check box is cleared by default.
If the primary service interface goes back online, the transport service continues to use the backup service interface.
- To assign the DFI role to the service interface, select the Default Forwarding Interface check box. This check box cannot be selected if in the Role drop-down list for the service interface, you selected Leaf.
- Click + Add to add the service interface to the transport service.
The service interface is displayed in the lower part of the window. You can delete a service interface by clicking Delete next to it.
- Click Next to proceed to the next group of settings.
- In the Group drop-down list, select the previously created group of OpenFlow interfaces that you want to add. A service interface is automatically created on top of each OpenFlow interface in the group, and that service interface is added to the transport service.
- In the QoS drop-down list, select the previously created QoS rule for service interfaces created on top of OpenFlow interfaces.
- In the VLAN ID field, enter the outer VLAN tag value for service interfaces created on top of OpenFlow interfaces. You must take into account the following limitations regarding automatic creation of service interfaces on top of OpenFlow interfaces:
- Only service interfaces with the VLAN encapsulation type can be created.
- The VLAN tag value must be the same on all service interfaces.
- In the Role drop-down list, select a role for service interfaces automatically created on top of OpenFlow interfaces:
- Leaf
- Root
- Click + Add to add the group of OpenFlow interfaces to the transport service.
The automatically created service interfaces are displayed in the lower part of the window. You can delete a service interface by clicking Delete next to it.
- Click Create.
The P2M service is created and displayed in the table.
Page topEditing a P2M service
To edit a P2M service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select Edit.
- This opens a window; in that window, edit the settings that you want to change. For a description of the settings, see the instructions for creating a P2M service.
- Click Save.
Deleting a P2M service
Deleted P2M services cannot be restored.
To delete a P2M service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select Delete.
- If you need to delete the service interfaces added to the P2M service, select the Delete associated service interfaces check box in the confirmation window.
- Click Delete.
The P2M service is deleted and is no longer displayed in the table.
Page topViewing statistics of a P2M service
To view the statistics of a P2M service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select Statistics.
This opens a window with statistics of the P2M service.
Page topViewing the MAC table of a P2M service
To view the MAC table of a P2M service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select MAC table.
This opens a window with the MAC table of the P2M service.
- To find a specific MAC address, enter it in the field and click Find by MAC.
- To clear the MAC address table, click Clear.
Configuring the display of devices in a P2M service topology
To configure the display of devices in a P2M service topology
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select Service topology.
This opens a window with the P2M service topology.
- If you need to change the relative position of CPE devices in the topology, use the following buttons in the upper part of the window:
- Manual to manually change the relative position of CPE devices.
- Automatically to select one of the values in the drop-down list to automatically generate the transport service topology:
- Physical simulation — CPE devices are arranged in the diagram approximately in accordance with their actual location relative to each other. For example:
- Random — The arrangement of CPE devices is randomized. For example:
- Circle — Devices are arranged in accordance with a ring topology. For example:
- Breadthfirst — CPE devices are arranged horizontally. For example:
- Concentric — CPE devices are arranged concentrically. For example:
- Grid — CPE devices are arranged in accordance with a grid topology. For example:
- Physical simulation — CPE devices are arranged in the diagram approximately in accordance with their actual location relative to each other. For example:
- If you want to display labels of CPE devices, select the following check boxes:
- Name
- IP address
These check boxes are cleared by default.
- If necessary, display the links used in a segment of two CPE devices:
- Select the Segments check box. This check box is cleared by default.
- Select devices from the drop-down lists below or in the diagram.
- To open the window with control buttons and additional information about the CPE device or link, click the icon of the device or link.
Restarting a P2M service
You may need to restart a P2M service if a problem occurs during its operation (for example, with the network connection) or if changes made to the current configuration necessitate a restart.
To restart a P2M service:
- In the menu, go to the Infrastructure section.
The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.
- Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.
This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.
- Go to the P2M services section.
A table of P2M services is displayed.
- Click Management next to the P2M service and in the drop-down list, select Reprovision.
- In the confirmation window, click Confirm.
This opens a window with a success message about the restart of the P2M service. The SD-WAN Controller adds the P2M service to all CPE devices that were previously used in this service.
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