Cisco 10000 - Manual (Page 68)

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Cisco 10000 Series Router Software Configuration Guide
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Chapter 2 Scalability and Performance
Scaling Enhancements in Cisco IOS Release 12.2(28)SB
Scaling Enhancements in Cisco IOS Release 12.2(28)SB
In Cisco IOS Release 12.2(28)SB, up to 16,384 L2TP tunnels are supported. Because of a limit on the
number of VPDN groups supported, it is not possible to configure 16,384 tunnel definitions using the
CLI. Configure the remaining tunnel definitions using RADIUS.
Configuring the Cisco 10000 Series Router for High Scalability
To ensure high scalability on the Cisco 10000 series router, perform the following configuration tasks:
• Configuring Parameters for RADIUS Authentication, page 2-8
• Configuring L2TP Tunnel Settings, page 2-9
• VPDN Group Session Limiting, page 2-10
• Disabling Cisco Discovery Protocol, page 2-10
• Disabling Gratuitous ARP Requests, page 2-10
• Configuring a Virtual Template Without Interface-Specific Commands, page 2-11
• Monitoring PPP Sessions Using the SNMP Management Tools, page 2-13
• SNMP Process and High CPU Utilization, page 2-13
• CISCO-ATM-PVCTRAP-EXTN-MIB, page 2-14
• Configuring the Trunk Interface Input Hold Queue, page 2-15
• Configuring no atm pxf queuing, page 2-15
• Configuring atm pxf queuing, page 2-16
• Configuring keepalive, page 2-17
• Enhancing Scalability of Per-User Configurations, page 2-17
• Placing PPPoA Sessions in Listening Mode, page 2-19
• Placing PPPoA Sessions in Listening Mode, page 2-19
• Scaling L2TP Tunnel Configurations, page 2-19
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 ).
Table 2-4 Buffer Sizes for RADIUS Authentication
Buffer Size
Small 15000
Middle 12000
Big 8000