Administrator Guide

Ingress IPv6 access list kar on GigabitEthernet 10/0
Total cam count 1
seq 5 permit ipv6 22::/24 33::/24 monitor
Enabling Flow-Based Monitoring
Flow-based monitoring conserves bandwidth by monitoring only specied trac instead of all trac on the interface. This feature is
particularly useful when looking for malicious trac. It is available for Layer 2 and Layer 3 ingress and egress trac. You can specify
trac using standard or extended access-lists.
1. Enable ow-based monitoring for a monitoring session.
MONITOR SESSION mode
flow-based enable
2. Dene access-list rules that include the keyword monitor. Dell Networking OS only considers port monitoring trac that
matches rules with the keyword monitor.
CONFIGURATION mode
ip access-list
For more information, see Access Control Lists (ACLs).
3. Apply the ACL to the monitored port.
INTERFACE mode
ip access-group access-list
Example of the flow-based enable Command
To view an access-list that you applied to an interface, use the show ip accounting access-list command from EXEC
Privilege mode.
Dell(conf)#monitor session 0
Dell(conf-mon-sess-0)#flow-based enable
Dell(conf)#ip access-list ext testflow
Dell(config-ext-nacl)#seq 5 permit icmp any any count bytes monitor
Dell(config-ext-nacl)#seq 10 permit ip 102.1.1.0/24 any count bytes monitor
Dell(config-ext-nacl)#seq 15 deny udp any any count bytes
Dell(config-ext-nacl)#seq 20 deny tcp any any count bytes
Dell(config-ext-nacl)#exit
Dell(conf)#interface gig 1/1
Dell(conf-if-gi-1/1)#
ip access-group testflow in
Dell(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
ip address 10.11.1.254/24
ip access-group testflow in
shutdown
Dell(conf-if-gi-1/1)#exit
Dell(conf)#do show ip accounting access-list testflow
!
Extended Ingress IP access list testflow on GigabitEthernet 1/1
Total cam count 4
seq 5 permit icmp any any monitor count bytes (0 packets 0 bytes)
seq 10 permit ip 102.1.1.0/24 any monitor count bytes (0 packets 0 bytes)
seq 15 deny udp any any count bytes (0 packets 0 bytes)
seq 20 deny tcp any any count bytes (0 packets 0 bytes)
Dell(conf)#do show monitor session 0
SessionID Source Destination Direction Mode Type
--------- ------ ----------- --------- ---- ----
0 Gi 1/1 Gi 1/2 rx interface Flow-based
Access Control Lists (ACLs)
119