Dell S6100, Руководство по настройке

Страница: 208 / 1743

Version Description
8.3.1.0 Added the keyword
dscp
.
8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
8.1.1.0 Introduced on the E-Series.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Added support for non-contiguous mask and added the
monitor
option. Deprecated the
keyword
established
.
6.5.1.0 Expanded to include the optional QoS
order
priority for the ACL entry.
Usage Information
The order option is relevant in the context of the Policy QoS feature only. For more information, see the Quality
of Service section of the Dell Networking OS Configuration Guide .
The
monitor
option is relevant in the context of flow-based monitoring only. For more information, see the Port
Monitoring section.
The C-Series and S-Series cannot count both packets and bytes; when you enter the count byte options, only
bytes are incremented.
NOTE: When you configure ACL logging and byte counters 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.
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 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
Related Commands
• deny — assign a filter to deny IP traffic.
• deny tcp — assign a filter to deny TCP traffic.
208 Access Control Lists (ACL)