Dell Force10 S4810P - Egress Layer 3 ACL Lookup for Control-Plane IP Traffic

120 | Access Control Lists (ACLs)
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To create an egress ACLs, use the ip access-group command in the EXEC Privilege mode as shown in the
example below. This example also shows viewing the configuration, applying rules to the newly created
access group, and viewing the access list:
FTOS(conf)#interface gige 0/0
FTOS(conf-if-gige0/0)#ip access-group abcd out
FTOS(conf-if-gige0/0)#show config
!
gigethernet 0/0
no ip address
ip access-group abcd out
no shutdown
FTOS(conf-if-gige0/0)#end
FTOS#configure terminal
FTOS(conf)#ip access-list extended abcd
FTOS(config-ext-nacl)#permit tcp any any
FTOS(config-ext-nacl)#deny icmp any any
FTOS(config-ext-nacl)#permit 1.1.1.2
FTOS(config-ext-nacl)#end
FTOS#show ip accounting access-list
!
Extended Ingress IP access list abcd on gigethernet 0/0
seq 5 permit tcp any any
seq 10 deny icmp any any
seq 15 permit 1.1.1.2
Egress Layer 3 ACL Lookup for Control-plane IP Traffic
By default, packets originated from the system are not filtered by egress ACLs. If you initiate a ping
session from the system, for example, 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..
Task Command Syntax Command Mode
Apply Egress ACLs to IPv4 system
traffic.
ip control-plane [egress filter] CONFIGURATION
Apply Egress ACLs to IPv6 system
traffic.
ipv6 control-plane [egress filter] CONFIGURATION
Create a Layer 3 ACL using permit
rules with the count option to describe
the desired CPU traffic
permit ip {source mask | any |
host ip-address} {destination mask
| any | host ip-address} count
CONFIG-NACL
Note: The ip control-plane [egress filter] and the ipv6 control-plane [egress filter] commands are not
supported on S4810 systems.