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For example, an ACL rule with TCP port range 4000 - 8000 uses 8 entries in the CAM:
Rule#
1
2
3
4
5
6
7
8
Total Ports: 4001
But an ACL rule with TCP port lt 1023 takes only one entry in the CAM:
Rule#
1
Total Ports: 1024
Related
permit
Commands
permit tcp
Data
0000111110100000 1111111111100000 4000
0000111111000000 1111111111000000 4032
0001000000000000 1111100000000000 4096
0001100000000000 1111110000000000 6144
0001110000000000 1111111000000000 7168
0001111000000000 1111111100000000 7680
0001111100000000 1111111111000000 7936
0001111101000000 1111111111111111 8000
Data
0000000000000000 1111110000000000 0
Assign a permit filter for IP packets.
Assign a permit filter for TCP packets.
Mask
From
To
4031
4095
6143
7167
7679
7935
7999
8000
Mask
From
To
1023
IPv6 Access Control Lists (IPv6 ACLs) | 699
#Covered
32
64
2048
1024
512
256
64
1
#Covered
1024
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