Ip Access-Group - Cisco catalyst 3750 Command Reference Manual

ip access-group

ip access-group
Use the ip access-group interface configuration command to control access to a Layer 2 or Layer 3
interface. Use the no form of this command to remove all access groups or the specified access group
from the interface.
Syntax Description
access-list-number
name
in
out
Defaults
No access list is applied to the interface.
Command Modes Interface configuration
Command History Release
12.1(11)AX
12.1(14)EA1
Usage Guidelines You can apply named or numbered standard or extended IP access lists to an interface. To define an
access list by name, use the ip access-list global configuration command. To define a numbered
access list, use the access list global configuration command. You can used numbered standard access
lists ranging from 1 to 99 and 1300 to 1999 or extended access lists ranging from 100 to 199 and
2000 to 2699.
You can use this command to apply an access list to a Layer 2 or Layer 3 interface. However, note these
limitations for Layer 2 interfaces (port ACLs):
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Catalyst 3750 Switch Command Reference
2-200
ip access-group {access-list-number | name} {in | out}
no ip access-group [access-list-number | name] {in | out}
The number of the IP access control list (ACL). The range is 1 to 199 or
1300 to 2699.
The name of an IP ACL, specified in the ip access-list global configuration
command.
Specify filtering on inbound packets.
Specify filtering on outbound packets. This keyword is valid only on
Layer 3 interfaces.
Modification
This command was introduced.
This command support was extended to Layer 2 interfaces.
You can only apply ACLs in the inbound direction; the out keyword is not supported for Layer 2
interfaces.
You can only apply one IP ACL and one MAC ACL per interface.
Layer 2 interfaces do not support logging; if the log keyword is specified in the IP ACL, it is
ignored.
An IP ACL applied to a Layer 2 interface only filters IP packets. To filter non-IP packets, use the
mac access-group interface configuration command with MAC extended ACLs.
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
OL-8552-07