9-5
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
OL-7827-12
Chapter 9 Managing Subscribers
Information About Subscribers
Subscriber Mapping Limits
Refer to Table 9-3 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.
Introduced subscriber aging is not supported when using VPN-based subscribers.
VPN-Based Subscribers
A VPN-based subscriber contains a set of mappings of the form: IP@VpnName, where IP can be either
a single IP address or a range of addresses. A VPN-based subscriber may be either VLAN-based or
MPLS/VPN-based
Most VPN-based subscriber functionality is managed via the SM, with the role of the SCE platform CLI
being more limited.
The SCE platform CLI can be used to do the following:
• Display VPN-related mappings
• Monitor bypassed VPNs
• View all automatic VLAN VPNs
• Clear upstream VPN mappings
• Clear all automatic VLAN VPNs (only VPNs that have no active subscriber mappings).
Automatic VLAN VPNs
The SCE platform will automatically create a new VPN under the following conditions
• The VPN name does not currently exist
and
• The VPN name is a number in the range [0 to 2046]
The number is used as the VLAN mapping of the newly created VPN. VLAN mappings cannot be added
to automatic VPNs.
Table 9-3 Maximum Number of IP Mappings per Single Subscriber
Mode Pure IP Private IP
Standalone 1024 200
Cascade 300 50
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