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Chapter 2
Scalability and Performance
Configuring Parameters for RADIUS Authentication
If your network uses a RADIUS server for authentication, set the small, middle, and big buffers by using
the buffers command.
Table 2-4
Buffer
Small
Middle
Big
Example 2-3
Router(config)# buffers small perm 15000
Router(config)# buffers mid perm 12000
Router(config)# buffers big perm 8000
Typically, if the RADIUS server is only a few hops away from the router, we recommend that you
configure the RADIUS server retransmit and timeout rates by using the radius-server command.
Table 2-5
Table 2-5
Parameter
RADIUS Server Retransmit Rate
RADIUS Server Timeout Rate
Example 2-4
Router(config)# radius-server retransmit 5
Router(config)# radius-server timeout 15
Configuring L2TP Tunnel Settings
Configure an L2TP tunnel password using Cisco IOS Release 12.2(4)BZ1 or later. We recommend that
you configure the L2TP tunnel parameters listed in
Example
Table 2-6
Parameter
No Session Timeout
L2TP Tunnel Receive Window
L2TP Tunnel Retransmit Timeout
OL-2226-23
Table 2-4
lists the buffer sizes to configure (and see
Buffer Sizes for RADIUS Authentication
Size
15000
12000
8000
Configuring Buffer Sizes
lists the recommended settings (and see
RADIUS Server Parameters
Configuring RADIUS Server Parameters
2-7).
L2TP Tunnel Settings
Configuring the Cisco 10000 Series Router for High Scalability
Example
2-4).
Value
5
15
Table 2-6
(and see
Setting
30
100
2 (minimum)
8 (maximum)
Cisco 10000 Series Router Software Configuration Guide
Example
2-3).
Example
2-5,
Example
2-6, and
2-9
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Troubleshooting
