A
CCESS
C
ONTROL
L
IST
C
OMMANDS
4-117
uses 1 bits to indicate “match” and 0 bits to indicate “ignore.” The
bitmask is bitwise ANDed with the specified source IP address, and
then compared with the address for each IP packet entering the port(s)
to which this ACL has been assigned.
Example
This example configures one permit rule for the specific address 10.1.1.21
and another rule for the address range 168.92.16.x – 168.92.31.x using a
bitmask.
Related Commands
access-list ip (4-115)
permit
,
deny
(Extended ACL)
This command adds a rule to an Extended IP ACL. The rule sets a
filter condition for packets with specific source or destination IP
addresses, protocol types, source or destination protocol ports, or TCP
control codes. Use the
no
form to remove a rule.
Syntax
[
no
] {
permit
|
deny
} [
protocol
-
number |
udp
]
{
any
|
source address-bitmask |
host
source
}
{
any
|
destination address-bitmask |
host
destination
}
[
source-port
sport
[
end
]] [
destination-port
dport
[
end
]]
[
no
] {
permit
|
deny
}
tcp
{
any
|
source address-bitmask |
host
source
}
{
any
|
destination address-bitmask |
host
destination
}
[
source-port
sport
[
end
]] [
destination-port
dport
[
end
]]
•
protocol-number
– A specific protocol number. (Range: 0-255)
•
source
– Source IP address.
•
destination
– Destination IP address.
•
address-bitmask
– Decimal number representing the address bits to
match.
•
host
– Keyword followed by a specific IP address.
Console(config-std-acl)#permit host 10.1.1.21
Console(config-std-acl)#permit 168.92.16.0 255.255.240.0
Console(config-std-acl)#
Summary of Contents for 6152L2
Page 2: ......
Page 18: ...TABLES xiv ...
Page 32: ...INTRODUCTION 1 10 ...
Page 46: ...INITIAL CONFIGURATION 2 14 ...
Page 185: ...PORT CONFIGURATION 3 139 Figure 3 61 Displaying Etherlike and RMON Statistics ...
Page 249: ...QUALITY OF SERVICE 3 203 Figure 3 90 Configuring Policy Maps ...
Page 290: ...CONFIGURING THE SWITCH 3 244 ...
Page 303: ...COMMAND GROUPS 4 13 VC VLAN Database Configuration ...
Page 434: ...COMMAND LINE INTERFACE 4 144 ...
Page 568: ...TROUBLESHOOTING B 4 ...
Page 581: ......