Ip Prefix List Commands - D-Link DXS-3600-16S Manual

IP Prefix List Commands

28-1 ip prefix-list
This command is used to create an IP prefix list or add a rule for an IP prefix list. Use the no form of this command to
remove an IP prefix list or remove a rule for an IP prefix list.
ip prefix-list PREFIX-LIST-NAME [[seq SEQ-NUMBER] {deny | permit} NETWORK-ADDRESS [ge MINIMUM-
PREFIX-LENGTH] [le MAXIMUM-PREFIX- LENGTH]]
no ip prefix-list PREFIX-LIST-NAME [[seq SEQ-NUMBER] {deny | permit} NETWORK-ADDRESS [ge
MINIMUM-PREFIX-LENGTH] [le MAXIMUM-PREFIX- LENGTH]]
Parameters
PREFIX-LIST-NAME
seq SEQ-NUMBER
deny
permit
NETWORK-ADDRESS
ge MINIMUM-PREFIX-
LENGTH
le MAXIMUM-PREFIX-
LENGTH
Default
Command Mode
Command Default Level
Usage Guideline
DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide
Specifies the name of the IP prefix list. It can accept up to 16 characters. The syntax
is general string that does not allow space.
(Optional) Specifies the sequence number of the rule entry. The range is 1 to 65535.
(Optional) Specifies the rule to deny the access when matched.
(Optional) Specifies the rule to permit the access when matched.
(Optional) Specifies the network address to match.
(Optional) Specifies the minimum prefix length used to match the network address.
The range is 1 to 32.
(Optional) Specifies the maximum prefix length used to match the network address.
The range is 1 to 32.
None.
Global Configuration Mode.
Level: 8
The ip prefix-list command is used to create or configure an IP prefix list.
An IP prefix list can have multiple rule entries; each is represented by a sequence
number. The rule with the lower sequence number will be evaluated first. If the
sequence number is not specified for the defined rule entry, the sequence number
will be automatically given. The automatically given sequence number will be a
multiple of 5. Therefore, if the defined rule is the first rule in the prefix list, the
automatically given sequence number will be 5. If the defined rule is not the first rule
in the prefix list, the sequence number will be the number that is a multiple of 5 and
larger than the largest sequence number of an existing rule in the prefix list.
A prefix list consists of an IP address and a bit mask. The bit mask is entered as a
number from 1 to 32. An implicit denial is applied to traffic that does not match any
prefix list entry. The IP route prefix list rule entry is defined to either permit or deny
specific routes. Prefix lists are configured to match an exact prefix length or a prefix
range.
The prefix list is processed using an exact match when neither the ge nor le is
specified. If only the ge is specified, the range of the mask length used to match the
network address is from the minimum prefix length to a full 32-bit length. If only the le
is specified, the range of the mask length is from prefix length of network to the
maximum prefix length. If both the ge and le is specified, the range of the mask
length falls between the minimum prefix length and the maximum prefix length.
There is a restriction about the minimum prefix length and the maximum prefix
length:
prefix length of network < the minimum prefix length < the maximum prefix length <=
32
290