Applying Egress Layer 3 Acls (Control-Plane); Ip Prefix Lists - Dell S4820T Configuration Manual

seq 10 deny icmp any any
seq 15 permit 1.1.1.2
Dell#configure terminal
Dell(conf)#interface te 1/2
Dell(conf-if-te-1/2)#ip vrf forwarding blue
Dell(conf-if-te-1/2)#show config
!
interface TenGigabitEthernet 1/2
ip vrf forwarding blue
no ip address
shutdown
Dell(conf-if-te-1/2)#
Dell(conf-if-te-1/2)#
Dell(conf-if-te-1/2)#end
Dell#

Applying Egress Layer 3 ACLs (Control-Plane)

By default, packets originated from the system are not filtered by egress ACLs.
For example, if you initiate a ping session from the system and apply an egress ACL to block this type of
traffic on the interface, the ACL does not affect that ping traffic. The Control Plane Egress Layer 3 ACL
feature enhances IP reachability debugging by implementing control-plane ACLs for CPU-generated and
CPU-forwarded traffic. Using permit rules with the count option, you can track on a per-flow 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 traffic.
CONFIGURATION mode
ip control-plane [egress filter]
2. Apply Egress ACLs to IPv6 system traffic.
CONFIGURATION mode
ipv6 control-plane [egress filter]
3. Create a Layer 3 ACL using permit rules with the count option to describe the desired CPU traffic.
CONFIG-NACL mode
permit ip {source mask | any | host ip-address} {destination mask | any |
host ip-address} count
FTOS Behavior: Virtual router redundancy protocol (VRRP) hellos and internet group management
protocol (IGMP) packets are not affected when you enable egress ACL filtering for CPU traffic. Packets
sent by the CPU with the source address as the VRRP virtual IP address have the interface MAC address
instead of VRRP virtual MAC address.

IP Prefix Lists

IP prefix lists control routing policy. An IP prefix list is a series of sequential filters that contain a matching
criterion (examine IP route prefix) and an action (permit or deny) to process routes. The filters are
Access Control Lists (ACLs)
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