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deny
To drop packets meeting the criteria specified, configure a filter.
Syntax
deny ip-prefix [ge min-prefix-length] [le max-prefix-length]
Parameters
ip-prefix 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.
Defaults Not configured.
Command Modes PREFIX-LIST
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
Sequence numbers for this filter are automatically assigned starting at sequence number 5.
If you do not use the ge or le options, only packets with an exact match to the prefix are filtered.
Related
Commands
permit — configures a filter to pass packets.
seq — configures a drop or permit filter with a specified sequence number.
ip prefix-list
Enter the PREFIX-LIST mode and configure a prefix list.
Syntax
ip prefix-list prefix-name
Parameters
prefix-name Enter a string up to 16 characters long as the name of the prefix list, up to 140
characters long.
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
Prefix lists redistribute OSPF and RIP routes meeting specific criteria.
Related
Commands
show ip route list — displays IP routes in an IP prefix list.
show ip prefix-list summary — displays a summary of the configured prefix lists.
Access Control Lists (ACL) 179