Cisco 7604 Configuration Guide - Page 621
Default Rule Allocation, Rules in Multiple Context Mode, Context Mode, Specification, Single
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Appendix A Specifications Rule Limits Default Rule Allocation Table A-7 lists the default number of rules for each feature type. Note Some access lists use more memory than others. Depending on the type of access list, the actual limit the system can support will be less than the maximum. See the "Maximum Number of ACEs" section on page 13-6 for more information about ACEs and memory usage. Table A-7 Default Rule Allocation Context Mode Specification Single Multiple (Maximum per Partition) with 121 pools AAA Rules 8744 1345 ACEs established commands2 100,567 624 14,801 96 Filter Rules 3747 576 ICMP, Telnet, SSH, and HTTP Rules 2498 384 Policy NAT ACEs3 2498 384 Inspect Rules 5621 1537 Total Rules 124,923 19,219 1. Use the show resource rule command to view the default values for partitions other than 12. 2. Each established command creates a control and data rule, so this value is doubled in the Total Rules value. 3. This limit is lower than in release 2.3. Rules in Multiple Context Mode In multiple context mode with the default of 12 memory partitions, each context supports the maximum number of rules listed in Table A-7; the actual number of rules supported in a context might be more or less, depending on how many contexts you have and how many partitions you configure. See the "About Memory Partitions" section on page 4-12 for information about memory distribution among contexts. If you reduce the number of partitions, the maximum number of rules is recalculated and might not match the total system number available for 12 partitions. To view the maximum number of rules for partitions, enter the following command in the system execution space: hostname(config)# show resource rule For example, the following is sample output from the show resource rule command, and shows the maximum rules as 19219 per partition with 12 partitions (this is an example only, and might differ from the actual number of rules for your system): hostname(config)# show resource rule Default Configured Absolute CLS Rule Limit Limit Max Policy NAT 384 384 833 ACL 14801 14801 14801 OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM A-7
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