Dell Force10 MXL Blade - Page 115

Access Control Lists (ACL) | 115
In the MXL Switch, you can configure either count (packets) or count (bytes). However, for an ACL
with multiple rules, you can configure some ACLs with count (packets) and others as count (bytes) at
any given time.
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 bit
mask boundaries; the space required depends on exactly what ports are included in the range.
For example, an ACL rule with TCP port range 4000 - 8000 uses eight entries in the CAM:
But an ACL rule with TCP port lt 1023 takes only one entry in the CAM:
Related
Commands
seq
Assign a sequence number to a deny or permit filter in an extended IP access list while creating the
filter.
Syntax
seq sequence-number {deny | permit} {ip-protocol-number | icmp | ip | tcp | udp} {source mask |
any | host ip-address} {destination mask | any | host ip-address} [operator port [port]] [count
[byte]] [dscp value] [order] [fragments]
Parameters
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
Rule# Data Mask From To #Covered
1 0000000000000000 1111110000000000 0 1023 1024
Total Ports: 1024
ip access-list extended Configures an extended ACL.
permit Assigns a permit filter for IP packets.
permit tcp Assigns a permit filter for TCP packets.
sequence-number
Enter a number from 0 to 4294967290.
Range: 1 to 65534
deny Enter the keyword deny to configure a filter to drop packets meeting this condition.
permit Enter the keyword permit to configure a filter to forward packets meeting this
criteria.
ip-protocol-number
Enter a number from 0 to 255 to filter based on the protocol identified in the IP
protocol header.
icmp Enter the keyword icmp to configure an ICMP access list filter.