Easy Cisco ACL Editing

 If you want to make an ACL change at anytime follow these steps of changing an ACL.  

 Login to Router or switch that needs an ACL change. 

 Issue the following command:

Router# sh ip access-lists [access-list name or #]

Note the line numbers of where you need to insert a line or delete a line.

Cisco Nexus Changes

       When you need to insert a line or lines issue the following commands on all Nexus devices:

NexusRouter# conf t

NexusRouter(config)#  ip access-list [name or #]

NexusRouter(config-acl)# (line #) permit (tcp/udp/ip) source ip(x.x.x.x/x) destination ip(y.y.y.y/y) (port)

Cisco IOS Changes

      When you need to insert a line on lines issue the following commands on all Cisco gear except Nexus:

Router# conf t

Router(config)# ip access-list extended [name or #]

Router(config-acl)# (line #) permit (tcp/udp/ip) source ip wildcard mask(x.x.x.x  y.y.y.y) destination ip wildcard mask.

 Lines will never be overwritten during an ACL change it will error out. You will have to say no line number and then renter the line with a new line number.  This is universal against all Cisco gear.

Router(config-acl)#no (line #)

If you need to re-sequence  the line numbers you can by issuing the following commands:

On Nexus Gear:

NexusRouter(config)# resequence ip access-list [name or #] [start #] [increment step]

On  Cisco Gear:

Router(config)# ip access-list resequence [name or #] [start #] [increment step]