|Oracle® Communications Unified Inventory Management MPLS L3 VPN Technology Pack Implementation Guide
Part Number E36035-01
|PDF · Mobi · ePub|
This chapter provides an example of configuring a service using the MPLS L3 VPN Technology Pack.
This example is for a Full Mesh VPN with three sites.
A service such as this example comprises two services that you create in Oracle Communications Unified Inventory Management (UIM):
A customer service that represents sites and represents devices that require connectivity. The customer service is modeled as an instance of the Data Networking Service specification. See "Creating the Customer View" for more information.
A transport service that represents the service provider's implementation of that connectivity. The transport service is modeled as an instance of the MPLS L3 VPN Service specification.
After the customer and transport services have been created, you link them together to complete the overall service. See "Linking the Customer View to the Service Provider View" for more information.
Inventory administration includes Data Networking Device and Data Networking Device Interface specifications for PE devices and CE devices.
For this example, we will assume that all the required PE and CE devices have been discovered and populated.
Note:This example is based on the use of the default specifications and characteristics supplied with the technology pack. Extending the technology pack may influence how you configure the service.
The customer view includes the CPE and sites that are to be connected by the service-provider MPLS L3 VPN network. The customer service is an instance of the Data Networking Service specification provided in the technology pack. See Figure 1-2, "Data Networking Service Model" for an illustration of the specifications used to model a data networking service.
Creating the customer service involves the following steps:
The customer service is represented by an instance of the Data Networking Service specification. This specification has an accompanying configuration specification.
See Figure 1-2, "Data Networking Service Model" to view the relationships between the Data Networking Service specification and other specifications.
You create a configuration version based on this specification so that you can assign the customer sites that you create. Later, you will also assign a transport service to this service configuration. See "Linking the Customer View to the Service Provider View".
Complete the following steps to create and provision the customer service:
Create a service based on the Data Networking Service specification.
Specify a name, for example ACME Service, for the Data Networking service.
Add a configuration to the service. Only one specification (Data Networking Service Configuration) is available for this configuration.
The technology pack includes a location-type Place specification called serviceLocation. You create entities based on this specification for the locations of customer sites. These locations are then assigned to customer site configurations. For this example, you need a serviceLocation entity for each of the three customer sites.
You create Place entities for the customer sites where the CPE devices are located. The technology pack includes a Data Networking Site specification and an accompanying configuration specification.
You create three Place entities, one for each customer site. For each site:
Create a Place entity of type Site based on the Data Networking Site specification.
Specify a name, for example New York, Miami, and Los Angeles.
Add a configuration version. Only one configuration specification (Data Networking Site Configuration) is available. See "Provisioning the Customer Sites" for information about assigning resources to the site configuration.
See Figure 1-3, "Data Networking Site Model" to view the relationships among the entities used to model data networking sites.
You provision the customer sites, New York, Miami, and Los Angeles, that you created by specifying their location, site termination, and CPE devices.
For each site configuration:
Add a Location Address configuration item and assign one of the service locations you created previously.
Add a Customer Premise Equipment configuration item. Assign a Data Networking Device entity to this item, selecting the logical device entity that is appropriate for each site.
Add a Site Termination configuration item. To this configuration item, add a Customer Premise Equipment Interface configuration item and assign a logical device interface that is provided by the logical device you selected as the CPE.
Do not assign a resource to the Transport Termination configuration item at this time. You will assign this resource after you have created the transport service. See "Linking the Customer View to the Service Provider View" for more information.
In the Data Networking Service Configuration specification, under Sites, create three configuration items of type Data Networking Site.
For the first configuration item, assign New York; for the second configuration item, assign Miami; for the third configuration item, assign Los Angeles.
The service provider view includes the creation of route distinguishers, route targets, IP addresses, VRFs, VPN networks, terminations, and the MPLS L3 VPN service.
The route distinguisher is a six-byte number that is prepended to a standard IPv4 address to create a VPN-IPv4 address that is unique across the core network. PEs use route distinguishers to ensure that traffic is routed to the proper CE. You must create a pool of route distinguishers so that they can be assigned to VRF configurations.
To create a route distinguisher, do the following:
Create an Inventory Group entity of type Route Distinguisher Type 0 Group.
Specify a name for the route distinguisher inventory group, for example RD 0 Group.
In the Initial Route Distinguisher Group Name list, specify the range of route distinguishers you want to create, such as 1:1-1:10.
Custom Network Addresses based on the Route Distinguisher specification are created automatically. Their names correspond to the range you entered in the Initial Route Distinguisher Group Name list.
Verify whether the custom network address and the route distinguisher are created properly.
Note:You must not edit the route distinguishers that are automatically generated because the inventory group, Route Distinguisher Type 0 Group, controls these route distinguishers.
The route target represents a route target scoped to a Route Target Group. You must create a pool of route targets so that they can be assigned to VRF configurations.
To create a route target, do the following:
Create an Inventory Group entity of type Route Target Type 0 Group.
Specify a name for the route target inventory group, for example RT 0 Group.
In the Initial Route Target Group Name list, specify the range of route targets you want to create, such as 2:1 - 2:10.
Custom network addresses based on the Route Target specification are created automatically. Their names correspond to the range you entered in the Initial Route Target Group Name list.
You must generate a pool of route targets that would be consumed.
Verify whether the custom network address and the route target is created properly.
Note:You must not edit the route targets that are automatically generated because the inventory group, Route Target Type 0 Group, controls these route targets.
An IP address is a numerical representation of the computers involved in a network that use the IP for communication. IP addresses are stored as binary numbers and are usually displayed in human-readable notations. An IP address in the MPLS L3 VPN network represents an IPv4 address or an IPv6 address.
You must create three IP addresses. For each IP address:
Create the Custom Network Address specification, IPv4 IP Address.
Specify a value for the IPv4 IP address, such as 192.168.1.1/30.
Specify a prefix for the IPv4 IP address, such as 192.168.1.1.
Specify a CIDR value for the IPv4 IP address, such as 30.
In addition to the IPv4 IP Address that you created, you must create two more IP addresses: 192.168.1.5/30 and 192.168.1.9/30.
A VRF defines a VRF instance in the MPLS L3 VPN network.
You must create three VRF instances, for example VRF1, VRF2, and VRF3. Then, associate VRF1, VRF2, and VRF3 to PE1, PE2, and PE3 respectively. The following procedure describes the steps to create VRF1. You must repeat these steps for VRF2 and VRF3:
Create the Logical Device specification, VRF.
Specify a name for the VRF instance, for example VRF1.
Select the route distinguisher inventory group that you created, such as RD 0 Group.
Associate the VRF to PE.
Search for PE1 and associate.
Add a configuration. Only one configuration specification is available, MPLS VPN VRF Configuration.
UIM automatically assigns an unassigned route distinguisher from the group that you selected in the Preferred Route Distinguisher Group list. Auto Assignment occurs when the you choose the Auto-Assign menu item from the Related Pages menu.
A VPN network represents a topology segment for a larger VPN network. A VPN network is either a Full Mesh topology or Hub and Spoke topology. Each VPN network can be divided into a set of Full Mesh and Hub and Spoke network segments.
To create a VPN network:
Create the Network specification, MPLS L3 VPN Network.
Specify a name for the Network specification, for example Network1.
In the Preferred Route Target Group list, select the route target inventory group that you created, such as RT 0 Group.
Add a configuration to the MPLS L3 VPN Network service. Only one configuration specification (MPLS L3 VPN Network) is available.
Add a route target and three VRF configuration items, for example VRF1, VRF2, and VRF3.
Set VPN Topology to Full Mesh.
Select the first, second, and third VRF configuration items and assign objects VRF1, VRF2, and VRF3 respectively, and then set the Membership Type characteristic to Full Mesh Member.
Assign the unassigned route target from the group that you selected in the Preferred Route Target Group list.
The MPLS L3 VPN termination is the service-provider side of the VRF attachment circuit. It can include configurations based on the MPLS L3 VPN Termination Configuration specification.
You must create three Terminations, for example Termination 1, Termination 2, and Termination 3. The following procedure describes the steps to create Termination 1. You must repeat these steps for Termination 2 and Termination 3:
Create the Place specification, MPLS L3 VPN Termination.
Specify a name for the Place specification, for example Termination 1.
Add a configuration, MPLS L3 VPN Termination Configuration, to the termination.
Assign VRF1 object of the type VRF.
Add a Provider Edge Interface configuration item.
Assign a PE Interface object of type Data Networking Device Interface that represents the PE customer-facing interface.
This example assumes that the PE and its interfaces are already inventoried.
Assign an IP Address object of type IPv4 IP Address.
The MPLS L3 VPN service includes VPN networks and VPN terminations.
You create an entity based on the MPLS L3 VPN Service specification to represent the transport service. The specification is accompanied by the configuration specification, MPLS L3 VPN Configuration.
To create a service:
Create the Service specification, MPLS L3 VPN Service.
Specify a name for the Service specification, for example ACME VPN.
Add a configuration, MPLS L3 VPN Configuration, to the service.
Add the configuration items, MPLS L3 VPN Network and VPN ID.
Under the VPN Transport Terminations folder, add three MPLS VPN Termination configuration items.
Select the first, second, and third MPLS VPN Termination configuration items and assign objects Termination 1, Termination 2, and Termination 3 respectively.
Assign object MPLS L3 VPN Network.
Assign the VPN ID.
Until now, we have created the service provider view of the service request; we created a transport service instance and attached three terminations to that service. In each of the terminations, we captured information modeling the PE interface, which is customer facing. We also captured information about the VRF termination. The service is not complete until we update the customer view of the service, which references this instance.
After the transport service is complete, you can return to the customer view to link the two. Linking the views includes:
When these two assignments have been made, the entire MPLS L3 VPN service is complete.
You assign an MPLS L3 VPN service instance to the customer service configuration. This relationship defines the service that is used to enable connectivity between the three customer sites.
In the customer service configuration:
Add a Transport Service configuration item to the Transport Services configuration item. Assign the MPLS L3 VPN Service instance you created previously.
You assign an MPLS L3 VPN termination to each customer site. This relationship defines which service-provider termination is used to connect the customer site to the MPLS L3 VPN network.
For each customer site:
In the site configuration, assign the appropriate MPLS L3 VPN termination to the Transport Termination configuration item. This configuration item was left undefined when you provisioned the site originally. See "Provisioning the Customer Sites" for more information.
Now we have created the customer view of the service as well as the service provider view of the service; we created a data networking service instance composed of sites, which represents what the end user considers as the service. We also created a transport service composed of networks and terminations, which represents what the service provider considers as the implementation of interconnecting the sites together through terminations.