Users Guide

MONITOR SESSION mode
flow-based enable
2. Dene in access-list rules that include the keyword monitor. For port monitoring, Dell Networking OS only considers trac
matching rules with the keyword monitor.
CONFIGURATION mode
ip access-list
Refer to 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 tengigabitethernet 1/1
Dell(conf-if-te-1/1)#
ip access-group testflow in
Dell(conf-if-te-1/1)#show config
!
interface TenGigabitEthernet 1/1
ip address 10.11.1.254/24
ip access-group testflow in
shutdown
Dell(conf-if-te-1/1)#exit
Dell(conf)#do show ip accounting access-list testflow
!
Extended Ingress IP access list testflow on TenGigabitEthernet 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 Te 1/1 Te 1/2 rx interface Flow-based
Remote Port Mirroring
While local port monitoring allows you to monitor trac from one or more source ports by directing it to a destination port on the
same switch/router, remote port mirroring allows you to monitor Layer 2 and Layer 3 ingress and/or egress trac on multiple source
ports on dierent switches and forward the mirrored trac to multiple destination ports on dierent switches.
Remote port mirroring helps network administrators monitor and analyze trac to troubleshoot network problems in a time-saving
and ecient way.
In a remote-port mirroring session, monitored trac is tagged with a VLAN ID and switched on a user-dened, non-routable L2
VLAN. The VLAN is reserved in the network to carry only mirrored trac, which is forwarded on all egress ports of the VLAN. Each
Port Monitoring
641