Reference Guide
ip-prefix /nn
(OPTIONAL) Specify an IP prefix in the network/length format. For 
example, 35.0.0.0/8 means match the first 8 bits of address 35.0.0.0.
ge 
min-prefix-
length
(OPTIONAL) Enter the keyword ge and then enter the minimum prefix 
length, which is a number from zero (0) to 32.
le 
max-prefix-
length
(OPTIONAL) Enter the keyword le and then enter the maximum prefix 
length, which is a number from zero (0) to 32.
bitmask 
number
Enter the keyword bitmask then enter a bit mask number in dotted 
decimal format.
Defaults Not configured.
Command Modes PREFIX-LIST
Command History
This guide is platform-specific. For command information about other platforms, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
Version 6.3.1.0 Added the bit mask option.
Usage 
Information
If you do not use the ge or le options, only packets with an exact match to the prefix are 
filtered.
Related 
Commands
deny — configures a filter to drop packets.
permit — configures a filter to pass packets.
show config
Display the current PREFIX-LIST configurations.
S4820T
Syntax
show config
Command Modes PREFIX-LIST
Command History
This guide is platform-specific. For command information about other platforms, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
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