Subscriber Database: Capacity And Limits - Cisco SCE 8000 10GBE Software Configuration Manual

Information About Subscribers
There are two possible Subscriber Aware modes. In these modes, subscriber IDs and currently used
network IDs are provisioned into the Cisco SCE platform. The Cisco 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:
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Subscriber Database: Capacity and Limits

The capacity of the subscriber database depends on three variables:
The capacity of the subscriber database depends on three variables:
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•
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Table 10-2
following:
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•
Table 10-2
Subscribers
1,000,000
The maximum number of subscribers are same for all system modes. The maximum number of IPv4
subscribers, IPv6 subscribers, and network IDs in Dual stack mode varies based on the Dual stack mode
configuration. If the const-db value of the Dual stack mode is configured as 20, the device supports a
maximum of 800,000 IPv4 subscribers and 200,000 IPv6 subscribers. When the Dual stack mode is
enabled and all subscribers are dual stack subscribers (subscribers with one IPv4 and one IPv6 address),
then the device supports only a maximum of 500,000 dual stack subscribers. For details on configuring
the system modes, see the
Cisco SCE 8000 10GBE Software Configuration Guide
10-4
Static subscriber aware—The network IDs are static. The system supports the definition of
static-subscribers directly to the Cisco SCE platform. This is achieved by using the Cisco 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 Cisco SCE platforms.
Subscriber context size—Determined by the specific SML application loaded to the Cisco SCE
platform. This size is multiplied by the number of subscribers.
Available memory per traffic processor—The main memory consumers in a traffic processor are
flows and subscribers. The total number of subscribers that can be supported is the number of
subscribers per traffic processor multiplied by the number of traffic processors.
Available memory in the control processor—The control processor holds one entry per subscriber.
However, the control database is usually not the limiting factor regarding the number of subscribers,
since the control processor entry (context size) is much smaller than the traffic processor entry.
contains the maximum subscribers capacities for the Cisco SCE platform. Note the
These capacities are the maximum limits imposed by the SCOS. Usually actual numbers would be
lower due to large subscriber context size.
There is a difference between the maximum number of network ID entries and the numbers of
specific types of network IDs due to hardware limitations.
Maximum Number of Subscribers and Network IDs
Network
IDs IP addresses IP ranges
1,000,000 1,000,000
"Configuring the System Mode" section on page
VLAN tags Static Subscribers
250,000 4096 250,000
Chapter 10 Managing Subscribers
Virtual Gi
with VPN
250,000
3-17.
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