Broadband Scalability and Performance
Walk-by User Support for PWLAN in ISG
10
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
Note
For additional platform-independent restrictions pertaining to the walk-by sessions and information on
how to configure the Walk-By User Support for PWLAN in ISG feature, refer to the following URL:
http://www.cisco.com/en/US/docs/ios-xml/ios/isg/configuration/xe-3s/isg-wlkby-supp.html
ISG Scaling to Support Lite Sessions
This section provides the ISG scaling numbers for supporting walk-by session.
Table 22
lists the hardware combinations and scale numbers for authenticated and walk-by users.
The scale numbers provided in the
Table 22
assume the following reference configuration:
•
Walk-by users: A maximum of three traffic classes on the default session.
•
Authenticated users: A maximum of three traffic classes per user, with accounting on each traffic
class and L4R on a single traffic class.
Any deviation from the conditions mentioned above may result in different scale numbers.
Table 22
ISG Scaling Numbers
Hardware
Walk-by Users
1
1.
For a redundant system, after a route processor (RP) switchover, the existing configuration in a forwarding processor (FP)
takes some time to be cleaned up while new configuration (for walk-by users) is applied at a faster rate. In this scenario, if
the system operates at the maximum scale before the switchover, the system might exceed the resource limit. Therefore, it
is advisable to run a redundant system at a reduced scale.
Authenticated Users
1
Calls Per Second
2
2.
The calls-per-second rates mentioned in the
Table 22
are the target-sustained rates. However, after events such as failover
or reload, the rates might exceed these numbers for some period before falling back to the sustained values.
Walk-by Users
Authenticated Users
RP2/ESP40
128 K
48 K
135
15
RP2/ESP100
224 K
48 K
135
15
