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Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 2 Scalability and Performance
Configuring the Cisco 10000 Series Router for High Scalability
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 lists the buffer sizes to configure (and see Example 2-3).
Example 2-3 Configuring Buffer Sizes
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 lists the recommended settings (and see Example 2-4).
Example 2-4 Configuring RADIUS Server Parameters
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
Table 2-6 (and see Example 2-5, Example 2-6, and
Example 2-7).
Table 2-4 Buffer Sizes for RADIUS Authentication
Buffer Size
Small 15000
Middle 12000
Big 8000
Table 2-5 RADIUS Server Parameters
Parameter Value
RADIUS Server Retransmit Rate 5
RADIUS Server Timeout Rate 15
Table 2-6 L2TP Tunnel Settings
Parameter Setting
No Session Timeout 30
L2TP Tunnel Receive Window 100
L2TP Tunnel Retransmit Timeout 2 (minimum)
8 (maximum)