Setup Guide
To create an egress ACL, use the ip access-group command in EXEC Privilege mode. The example shows viewing the conguration,
applying rules to the newly created access group, and viewing the access list.
NOTE: VRF based ACL congurations are not supported on the egress
trac.
Example of Applying ACL Rules to Egress Trac and Viewing ACL Conguration
To specify ingress, use the out keyword. Begin applying rules to the ACL with the ip access-list extended abcd command. To
view the access-list, use the
show command.
DellEMC(conf)#interface GigabitEthernet 1/1
DellEMC(conf-if-gi-1/1)#ip access-group abcd out
DellEMC(conf-if-gi-1/1)#show config
!
GigabitEthernet 1/1
no ip address
ip access-group abcd out
no shutdown
DellEMC(conf-if-gi-1/1)#end
DellEMC#configure terminal
DellEMC(conf)#
ip access-list extended abcd
DellEMC(config-ext-nacl)#permit tcp any any
DellEMC(config-ext-nacl)#deny icmp any any
DellEMC(config-ext-nacl)#permit 1.1.1.2
DellEMC(config-ext-nacl)#end
DellEMC#show ip accounting access-list
!
Extended Ingress IP access list abcd on gigabitethernet 0/0
seq 5 permit tcp any any
seq 10 deny icmp any any
seq 15 permit 1.1.1.2
DellEMC#configure terminal
DellEMC(conf)#interface gigabitethernet 1/2
DellEMC(conf-if-gi-1/2)#ip vrf forwarding blue
DellEMC(conf-if-gi-1/2)#show config
!
interface GigabitEthernet 1/2
ip vrf forwarding blue
no ip address
shutdown
DellEMC(conf-if-gi-1/2)#
DellEMC(conf-if-gi-1/2)#
DellEMC(conf-if-gi-1/2)#end
DellEMC#
Applying Egress Layer 3 ACLs (Control-Plane)
By default, packets originated from the system are not ltered by egress ACLs.
For example, if you initiate a ping session from the system and apply an egress ACL to block this type of trac on the interface, the ACL
does not aect that ping trac. The Control Plane Egress Layer 3 ACL feature enhances IP reachability debugging by implementing
control-plane ACLs for CPU-generated and CPU-forwarded trac. Using permit rules with the
count option, you can track on a per-ow
basis whether CPU-generated and CPU-forwarded packets were transmitted successfully.
NOTE
: The ip control-plane [egress filter] and the ipv6 control-plane [egress filter] commands are
not supported.
1 Apply Egress ACLs to IPv4 system trac.
CONFIGURATION mode
ip control-plane [egress filter]
2 Apply Egress ACLs to IPv6 system trac.
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Access Control Lists (ACLs)