Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 241

Example Example Related Commands When you use the log option, the CP processor logs detail the packets that match. Depending on how many packets match the log entry and at what rate, the CP may become busy as it has to log these packet details. Use the monitor option only when you are using flow-based monitoring. For more information, refer to the Port Monitoring chapter in the C9000 Series Configuration Guide. By default, 10 ACL logs are generated if you do not specify the threshold explicitly. The default frequency at which ACL logs are generated is five minutes. By default, flow-based monitoring is not enabled. NOTE: When ACL logging and byte counters are configured simultaneously, byte counters may display an incorrect value. Configure packet counters with logging instead. Most ACL rules require one entry in the CAM. However, rules with TCP and UDP port operators (for example, gt, lt, or range) may require more than one entry. The range of ports is configured in the CAM based on bit mask boundaries; the space required depends on exactly what ports are included in the range. An ACL rule with a TCP port range of 4000-8000 uses eight entries in the CAM. Rule# Data Mask From To #Covered 1 0000111110100000 1111111111100000 4000 4031 32 2 0000111111000000 1111111111000000 4032 4095 64 3 0001000000000000 1111100000000000 4096 6143 2048 4 0001100000000000 1111110000000000 6144 7167 1024 5 0001110000000000 1111111000000000 7168 7679 512 6 0001111000000000 1111111100000000 7680 7935 256 7 0001111100000000 1111111111000000 7936 7999 64 8 0001111101000000 1111111111111111 8000 8000 1 Total Ports: 4001 An ACL rule with a TCP port lt 1023 uses only one entry in the CAM. Rule# Data Mask From To #Covered 1 0000000000000000 1111110000000000 0 1023 1024 Total Ports: 1024 deny - assigns a filter to deny IP traffic. deny udp - assigns a filter to deny UDP traffic. deny udp To drop user datagram protocol (UDP) packets meeting the filter criteria, configure a filter. C9000 Series Syntax Parameters deny udp {source mask | any | host ip-address} [operator port [port]] {destination mask | any | host ip-address} [dscp] [operator port [port]] [count [bytes]] [log] [order] [monitor] [fragments] To remove this filter, you have two choices: ● Use the no seq sequence-number command if you know the filter's sequence number. ● Use the no deny udp {source mask | any | host ip-address} {destination mask | any | host ip-address} command. source Enter the IP address of the network or host from which the packets were sent. Access Control Lists (ACL) 241