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Information About Subscribers
Subscriber Database: Capacity and Limits
The capacity of the subscriber database depends on three variables:
•
•
•
Table 9-2
•
•
Table 9-2
Platform
SCE 1000
SCE 2000
Working with Large Numbers of Subscribers
A very large number of subscribers, approaching the upper limit of the SCOS capacity, is more typical
in mobile installations. As the actual number of subscriber increases, the impact is expected to be
approximately four flows per subscriber.
Actual Maximum Number of Subscribers
As shown in
However, the actual maximum number of subscribers supported is based on the limit specified while
loading the SCA BB application.
There are two ways to specify the actual maximum number of subscribers:
•
•
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
9-4
Subscriber context size: Determined by the specific SML application loaded to the 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 SCE platform. Note the following:
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
Subscribers
Network IDs IP addresses IP ranges
100,000
>100,000
200,000
>200,000
Table
9-2, there is an absolute maximum numbers of subscribers based on SCOS capacity.
The capacity options mechanism: This mechanism is based on various capacity options supplied by
the application. The actual capacity option used is either specified while loading the application or
a previously-configured default capacity option is used.
Specific capacity CLI command (see
page
9-37): This specific command overrides the capacity option configured when loading the
application. It provides the following options:
40K, 80K, 120K, 200K
100,000
>7900
200,000
>7900
Configuring the Actual Maximum Number of Subscribers,
Chapter 9
Managing Subscribers
Static
VLAN tags
Subscribers
2046
80,000
2046
80,000
OL-7827-12
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