Cambium Networks PTP 820S, Техническое описание, Страница: 64 / 208

Chapter 4: Feature Description Ethernet Features
as Service Access Points (SAPs), while intra-network interfaces (E-NNIs or NNIs) are configured as
Service Network Points (SNPs).
Figure 38 PTP 820S Services Model
The PTP 820S services core provides for fully flexible C-VLAN and S-VLAN encapsulation, with a
full range of classification, preservation and translation options available. Service security and
isolation is provided without limiting the C-VLAN reuse capabilities of different customers.
Users can define up to 64 services on a single PTP 820S. Each service constitutes a virtual bridge
that defines the connectivity and behavior among the network element interfaces for the specific
virtual bridge. In addition to user-defined services, PTP 820S contains a pre-defined management
service (Service ID 257). If needed, users can activate the management service and use it for in-
band management.
To define a service, the user must configure virtual connections among the interfaces that belong
to the service. This is done by configuring service points (SPs) on these interfaces.
A service can hold up to 32 service points. A service point is a logical entity attached to a physical
or logical interface. Service points define the movement of frames through the service. Each
service point includes both ingress and egress attributes.
Note
Management services can hold up to 30 SPs.
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