Concept Guide
A standard IP ACL uses the source IP address as its match criterion.
1 Enter IP ACCESS LIST mode by naming a standard IP access list.
CONFIGURATION mode
ip access-list standard access-listname
2 Congure a drop or forward lter.
CONFIG-STD-NACL mode
seq sequence-number {deny | permit} {source [mask] | any | host ip-address} [count [byte]
[dscp] [order] [monitor [session-id]] [fragments]
NOTE: When assigning sequence numbers to lters, keep in mind that you might need to insert a new lter. To prevent
reconguring multiple lters, assign sequence numbers in multiples of ve.
To view the rules of a particular ACL congured on a particular interface, use the show ip accounting access-list ACL-name
interface interface command in EXEC Privilege mode.
Example of Viewing the Rules of a Specic ACL on an Interface
The following is an example of viewing the rules of a specic ACL on an interface.
DellEMC#show ip accounting access-list ToOspf interface gig 1/6
Standard IP access list ToOspf
seq 5 deny any
seq 10 deny 10.2.0.0 /16
seq 15 deny 10.3.0.0 /16
seq 20 deny 10.4.0.0 /16
seq 25 deny 10.5.0.0 /16
seq 30 deny 10.6.0.0 /16
seq 35 deny 10.7.0.0 /16
seq 40 deny 10.8.0.0 /16
seq 45 deny 10.9.0.0 /16
seq 50 deny 10.10.0.0 /16
DellEMC#
The following example shows how the seq command orders the lters according to the sequence number assigned. In the example, lter
25 was congured before lter 15, but the
show config command displays the lters in the correct order.
DellEMC(config-std-nacl)#seq 25 deny ip host 10.5.0.0 any log
DellEMC(config-std-nacl)#seq 15 permit tcp 10.3.0.0 /16 any monitor 300
DellEMC(config-std-nacl)#show config
!
ip access-list standard dilling
seq 15 permit tcp 10.3.0.0/16 any monitor 300
seq 25 deny ip host 10.5.0.0 any log
DellEMC(config-std-nacl)#
To delete a lter, use the no seq sequence-number command in IP ACCESS LIST mode. If you are creating a standard ACL with only
one or two lters, you can let Dell EMC Networking OS assign a sequence number based on the order in which the lters are congured.
The software assigns lters in multiples of 5.
Conguring a Standard IP ACL Filter
If you are creating a standard ACL with only one or two lters, you can let Dell EMC Networking OS assign a sequence number based on
the order in which the lters are congured. The software assigns lters in multiples of ve.
1 Congure a standard IP ACL and assign it a unique name.
CONFIGURATION mode
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Access Control Lists (ACLs)