Installation manual

3-108
SIGNAMAX LLC • www.signamax.eu
CLI – This example displays all entries currently in the secure MAC address table.
Access Control Lists
Access Control Lists (ACL) provide packet filtering for IP frames (based on address,
protocol, Layer 4 protocol port number or TCP control code) or any frames (based on
MAC address or Ethernet type). To filter incoming packets, first create an access list, add
the required rules, and then bind the list to a specific port.
Configuring Access Control Lists –
An ACL is a sequential list of permit or deny conditions that apply to IP addresses, MAC
addresses, or other more specific criteria. This switch tests ingress or egress packets
against the conditions in an ACL one by one. A packet will be accepted as soon as it
matches a permit rule, or dropped as soon as it matches a deny rule. If no rules match for
a list of all permit rules, the packet is dropped; and if no rules match for a list of all deny
rules, the packet is accepted.
Command Usage
The following restrictions apply to ACLs:
• The maximum number of ACLs is 64.
• Each ACL can have up to 32 rules. However, due to resource restrictions, the average
number of rules bound to the ports should not exceed 20.
The order in which active ACLs are checked is as follows:
1. User-defined rules in the Ingress MAC ACL for ingress ports.
2. User-defined rules in the Ingress IP ACL for ingress ports.
3. Explicit default rule (permit any any) in the ingress MAC ACL for ingress ports.
4. Explicit default rule (permit any any) in the ingress IP ACL for ingress ports.
5. If no explicit rule is matched, the implicit default is permit all.
Console#show network-access mac-address-table 4-155
---- ----------------- --------------- --------- -------------------------
Port MAC-Address RADIUS-Server Attribute Time
---- ----------------- --------------- --------- -------------------------
1/1 00-00-01-02-03-04 172.155.120.17 Static 00d06h32m50s
1/1 00-00-01-02-03-05 172.155.120.17 Dynamic 00d06h33m20s
1/1 00-00-01-02-03-06 172.155.120.17 Static 00d06h35m10s
1/3 00-00-01-02-03-07 172.155.120.17 Dynamic 00d06h34m20s
Console#