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Dell Configuration Guide for the S4048–ON System 9.14.2.5

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Creating a Prefix List Without a Sequence Number

To create a filter without a specified sequence number, use the following commands.

  1. Create a prefix list and assign it a unique name.
    CONFIGURATION mode
    ip prefix-list prefix-name
  2. Create a prefix list filter with a deny or permit action.
    CONFIG-NPREFIXL mode
    {deny | permit} ip-prefix [ge min-prefix-length] [le max-prefix-length]
    The optional parameters are:
    • ge min-prefix-length: is the minimum prefix length to be matched (0 to 32).
    • le max-prefix-length: is the maximum prefix length to be matched (0 to 32).

Example of Creating a Filter with Dell EMC Networking OS-Assigned Sequence Numbers

The example shows a prefix list in which the sequence numbers were assigned by the software. The filters were assigned sequence numbers based on the order in which they were configured (for example, the first filter was given the lowest sequence number). The show config command in PREFIX LIST mode displays two filters with the sequence numbers 5 and 10.
DellEMC(conf-nprefixl)#permit 123.23.0.0 /16
DellEMC(conf-nprefixl)#deny 133.24.56.0 /8
DellEMC(conf-nprefixl)#show conf
!
ip prefix-list awe
  seq 5 permit 123.23.0.0/16
  seq 10 deny 133.0.0.0/8
DellEMC(conf-nprefixl)#

To delete a filter, enter the show config command in PREFIX LIST mode and locate the sequence number of the filter you want to delete, then use the no seq sequence-number command in PREFIX LIST mode.

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