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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Configuring Filters with a Sequence Number

To configure filters with a sequence number, use the following commands.

  1. Enter IP ACCESS LIST mode by creating an extended IP ACL. CONFIGURATION mode ip access-list extended access-list-name
  2. Configure a drop or forward filter. CONFIG-EXT-NACL mode seq sequence-number {deny | permit} { ip-protocol-number | icmp | ip | tcp | udp} { source mask | any | host ip-address} { destination mask | any | host ip-address} [ operator port [ port]] [count [byte]] [order] [fragments]
When you create the filters with a specific sequence number, you can create the filters in any order and the filters are placed in the correct order.
  • NOTE: When assigning sequence numbers to filters, you might need to insert a new filter. To prevent reconfiguring multiple filters, assign sequence numbers in multiples of five or another number.
The following examples shows how the seq command orders the filters according to the sequence number assigned. In the example, filter 15 was configured before filter 5, but the show config command displays the filters in the correct order. 
Dell(conf-ext-nacl)#seq 15 deny ip host 112.45.0.0 any
                                 Dell(conf-ext-nacl)#seq 5 permit tcp 12.1.3.45 255.255.0.0 any
                                 Dell(conf-ext-nacl)#show config
                                 !
                                 ip access-list extended dilling
                                 seq 5 permit tcp 12.1.0.0 255.255.0.0 any
                                 seq 15 deny ip host 112.45.0.0 any
                                 Dell(conf-ext-nacl)#

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