Users Guide

Usage
Information
The C-Series cannot count both packets and bytes, so when you enter the count byte options, only
bytes are incremented.
Most ACL rules require one entry in the CAM. However, rules with TCP and UDP port operators (gt, lt,
range) may require more than one entry. The range of ports is configured in the CAM based on bitmask
boundaries; the space required depends on exactly what ports are included in the range.
Example
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
Example
An ACL rule with TCP port lt 1023 takes only one entry in the CAM:
Rule# Data Mask From To #Covered
1 0000000000000000 1111110000000000 0 1023 1024
Total Ports: 1024
Related
Commands
deny – assigns a filter to deny IP traffic.
deny tcp – assigns a deny filter for TCP traffic.
ipv6 access-list
Configure an access list based on IPv6 addresses or protocols.
Syntax
ipv6 access-list access-list-name cpu-qos
To delete an access list, use the no ipv6 access-list access-list-name command.
Parameters
access-list-name Enter the access list name as a string, up to 140 characters.
cpu-qos Enter the keyword cpu-qos to assign this ACL to control plane traffic only
(CoPP).
permit Enter the keyword permit to configure a filter to forward packets meeting this
condition.
deny Enter the keyword deny to configure a filter to drop packets meeting this
condition.
ospfv3 Specify that this ACL is for OSPFv3 control plane traffic
Defaults All access lists contain an implicit “deny any”; that is, if no match occurs, the packet is dropped.
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
198 Access Control Lists (ACL)