Cisco ASR1002-5G-SHA/K9 Software Guide - Page 211

Chapter 6 Broadband Scalability and Performance IP Sessions Scaling IP Sessions Scaling The ASR 1000 Series Routers can be deployed as an IP session aggregator. The maximum number of IP sessions that can be supported depends on the hardware combination. Table 6-2 lists the hardware combination and the maximum number of IP sessions that are supported. The session limits apply to all variety of IP session initiators: DHCP, unclassified Mac address, unclassified IP, and RADIUS proxy. Table 6-2 Maximum Number of IP Sessions Supported on ASR 1000 Hardware Chassis 1001 1002 1004, 1006 1004, 1006, 1013 RP Integrated Integrated RP1 RP1 RP2 ESP ESP-2.5G or ESP-5G ESP-5G ESP-10G or ESP-20G ESP-20G or ESP-40G IP Session 8000 12000 24000 32000 ISG Traffic Class 24000 36000 72000 96000 Note RP1 with 2GB DRAM is not recommended for IP sessions deployment. Layer 4 Redirect Scaling The ASR1000 supports the ability to redirect IP traffic within an ISG traffic class. Layer 4 redirect scaling is performed by the Quantum Flow Processor (QFP). The scaling limits are dependent on the ESP. Table 6-3 lists the ESP and the default per-session limit. Table 6-3 Maximum Number of Per-Session Limit Per ESP ESP ESP-2.5G ESP-5G ESP-10G ESP-20G ESP-40G L4 Redirect Translations 256K 256K 512K 1 Million 1 Million Default Per-Session Limit 128 128 128 128 128 Configuring the Cisco ASR 1000 Series Router for High Scalability The Cisco ASR 1000 Series Routers provide powerful performance and scalability for embedded services. To achieve maximum scaling on the 1001, 1002, and 1004 chassis, IOS software redundancy must be disabled. For more information about restrictions and limitations, see the "Restrictions for PPP Sessions and L2TP Tunnel Scaling" section on page 6-2. OL-16506-10 Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide 6-3