Cisco WS-C2960-24TC-S Software Guide - Page 542
no access-list, con terminal, permit, copy running-config startup-config, Step 1
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Configuring Standard QoS Chapter 28 Configuring QoS Beginning in privileged EXEC mode, follow these steps to create an IP extended ACL for IP traffic: Step 1 Step 2 Step 3 Step 4 Step 5 Command configure terminal access-list access-list-number {deny | permit} protocol source source-wildcard destination destination-wildcard end show access-lists copy running-config startup-config Purpose Enter global configuration mode. Create an IP extended ACL, repeating the command as many times as necessary. • For access-list-number, enter the access list number. The range is 100 to 199 and 2000 to 2699. • Use the permit keyword to permit a certain type of traffic if the conditions are matched. Use the deny keyword to deny a certain type of traffic if conditions are matched. • For protocol, enter the name or number of an IP protocol. Use the question mark (?) to see a list of available protocol keywords. • For source, enter the network or host from which the packet is being sent. You specify this by using dotted decimal notation, by using the any keyword as an abbreviation for source 0.0.0.0 source-wildcard 255.255.255.255, or by using the host keyword for source 0.0.0.0. • For source-wildcard, enter the wildcard bits by placing ones in the bit positions that you want to ignore. You specify the wildcard by using dotted decimal notation, by using the any keyword as an abbreviation for source 0.0.0.0 source-wildcard 255.255.255.255, or by using the host keyword for source 0.0.0.0. • For destination, enter the network or host to which the packet is being sent. You have the same options for specifying the destination and destination-wildcard as those described by source and source-wildcard. Note When creating an access list, remember that, by default, the end of the access list contains an implicit deny statement for everything if it did not find a match before reaching the end. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. To delete an access list, use the no access-list access-list-number global configuration command. This example shows how to create an ACL that permits IP traffic from any source to any destination that has the DSCP value set to 32: Switch(config)# access-list 100 permit ip any any dscp 32 This example shows how to create an ACL that permits IP traffic from a source host at 10.1.1.1 to a destination host at 10.1.1.2 with a precedence value of 5: Switch(config)# access-list 100 permit ip host 10.1.1.1 host 10.1.1.2 precedence 5 This example shows how to create an ACL that permits PIM traffic from any source to a destination group address of 224.0.0.2 with a DSCP set to 32: Switch(config)# access-list 102 permit pim any 224.0.0.2 dscp 32 28-42 Catalyst 2960 Switch Software Configuration Guide OL-8603-04
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