Command Line Reference Guide

196 | Access Control Lists (ACL)
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permit
c e s
Configure a filter to permit packets from a specific source IP address to leave the switch.
Syntax
permit {source [mask] | any | host ip-address} [count [byte] | log] [dscp value] [order] [monitor]
To remove this filter, you have two choices:
•Use the no seq sequence-number command syntax if you know the filter’s sequence number or
•Use the no permit {source [mask] | any | host ip-address} command.
Parameters
Defaults
Not configured.
Command Modes
CONFIGURATION-STANDARD-ACCESS-LIST
Command
History
Usage
Information
The order option is relevant in the context of the Policy QoS feature only. See the “Quality of Service”
chapter of the FTOS Configuration Guide for more information.
When you use the log option, CP processor logs details about the packets that match. Depending on
how many packets match the log entry and at what rate, the CP may become busy as it has to log these
packets’ details.
source
Enter the IP address in dotted decimal format of the network from which the packet was sent.
mask
(OPTIONAL) Enter a network mask in /prefix format (/x) or A.B.C.D. The mask, when
specified in A.B.C.D format, may be either contiguous or non-contiguous.
any Enter the keyword any to specify that all routes are subject to the filter.
host
ip-address
Enter the keyword host followed by the IP address to specify a host IP address or hostname.
count (OPTIONAL) Enter the keyword count to count packets processed by the filter.
dscp (OPTIONAL) Enter the keyword dcsp to match to the IP DCSCP values.
byte (OPTIONAL) Enter the keyword byte to count bytes processed by the filter.
log (OPTIONAL, E-Series only) Enter the keyword log to enter ACL matches in the log.
order (OPTIONAL) Enter the keyword order to specify the QoS priority for the ACL entry.
Range: 0-254 (where 0 is the highest priority and 254 is the lowest; lower order numbers
have a higher priority)
Default: If the order keyword is not used, the ACLs have the lowest order by default (255).
monitor (OPTIONAL) Enter the keyword monitor when the rule is describing the traffic that you
want to monitor and the ACL in which you are creating the rule will be applied to the
monitored interface. For details, see the section “Flow-based Monitoring” in the Port
Monitoring chapter of the FTOS Configuration Guide.
Version 8.3.1.0 Add DSCP value for ACL matching.
Version 8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Added support for S-Series
Version 7.5.1.0 Added support for C-Series
Version 7.4.1.0
Added support for non-contiguous mask and added the
monitor option.
Version 6.5.10
Expanded to include the optional QoS
order priority for the ACL entry.