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Cisco SCE8000 Software Configuration Guide, Rel 3.1.6S
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Chapter 9 Managing Subscribers
Information About Subscribers
The most basic mode is
Subscriber-less
mode. In this mode, there is no notion of subscriber in the
system, and the entire link where the SCE platform is deployed is treated as a single subscriber. Global
Application level analysis (such as total p2p, browsing) can be conducted, as well as global control (such
as limiting total p2p to a specified percentage). From a configuration stand point, this is a turnkey system
and there is no need to integrate or configure the system from a subscriber perspective.
In
Anonymous subscriber
mode, analysis is performed on an incoming network ID (IP address), as the
SCE platform creates an 'anonymous/on-the-fly' record for each subscriber. This permits analyzing
traffic at an individual network ID level (for example, to identify/monitor what a particular 'subscriber'
IP is currently doing) as well as control at this level (for example, to limit each subscriber's bandwidth
to a specified amount, or block, or redirect). Anonymous-subscriber allows quick visibility into
application and protocol usage without OSS integration, and permits the application of a uniform control
scheme using predefined templates.
There are two possible
Subscriber Aware
modes. In these modes, subscriber IDs and currently used
network IDs are provisioned into the SCE platform. The SCE platform can then bind usage to a particular
subscriber, and enforce per-subscriber policies on the traffic. Named reports are supported (such as top
subscribers with the OSS IDs), quota-tracking (such as tracking a subscriber-quota over time even when
network IDs change) as well as dynamic binding of packages to subscribers. The two Subscriber Aware
modes are:
•
Static subscriber aware
— The network IDs are static. The system supports the definition of
static-subscribers directly to the SCE platform. This is achieved by using the SCE platform CLI, and
defining the list of subscribers, their network IDs and policy information using interactive
configuration or import/export operations.
•
Dynamic subscriber aware
— The network IDs change dynamically for each subscriber login into
the Service Provider’s network. In this case, subscriber awareness is achieved by integrating with
external provisioning systems (either directly or through the SM) to dynamically learn network-ID
to subscriber mappings, and distribute them to the SCE platforms.
Subscriber Mapping Limits
Refer to the following table for the maximum number of IP mappings permitted per single subscriber.
An IP mapping may be either a single IP address or a range of addresses.
Aging Subscribers
Subscribers can be aged automatically by the SCE platform. ‘Aging’ is the automatic removal of a
subscriber, performed when no traffic sessions assigned to it have been detected for a certain amount of
time. The most common usage for aging is for anonymous subscribers, since this is the easiest way to
ensure that anonymous subscribers that have logged-out of the network are removed from the SCE
platform and are no longer occupying resources. Aging time can be configured individually for
introduced subscribers and for anonymous subscribers.
Table 9-2
Maximum Number of IP Mappings per Single Subscriber
Mode
Pure IP
Standalone
1024
