Users Guide

tagged TenGigabitEthernet 0/1-3
mac access-group flow in
shutdown
Dell#
The following example shows you how to configures a source as a physical interface only for ERPM.
Dell(conf)#monitor session 3 type erpm
Dell(conf-mon-sess-3)#)source vlan 100 dir rx
Dell(conf-mon-sess-3)# erpm source-ip 1.1.1.1 dest-ip 100.1.1.2
Dell(conf-mon-sess-3)# flow-based enable
Dell(conf-mon-sess-3)# no disable
The following example configures the port extender ports so that they are tagged and untagged members of VLAN 100. With regard to
the source as a VLAN, the supported direction of mirroring is rx only. You must also apply an access list to the VLAN with the rules that
match with the keyword “monitor”.
Dell(config-ext-macl)#do sh run mac
!
mac access-list extended test
seq 10 permit any any count monitor
Dell(config-ext-macl)#
Dell(config-ext-macl)#do sh run int vlan 100
!
interface Vlan 100
no ip address
tagged peGigE 3/0/1
mac access-group test in
shutdown
Dell(config-ext-macl)#
Port Monitoring on VLT
Devices on which VLT is configured are seen as a single device in the network. You can apply port monitoring function on the VLT devices
in the network.
Port monitoring enables ingress or egress traffic traversing on a port to be sent to another port so that the traffic can be analyzed. The
port to which traffic is sent for analysis is called the mirroring port. This port is connect to a port analyzer, which performs the traffic
analysis function.
Depending up on the location of the port to which the port analyzer is connected, port monitoring is classified into three categories: local
Port mirroring, remote port mirroring (RPM), and encapsulated remote port mirroring (ERPM).
NOTE
: For more information on port monitoring, see Port Monitoring.
The port monitoring or mirroring function when applied to VLT devices works as expected except with some restrictions. You can
configure RPM or ERPM monitoring between two VLT peers. As VLT devices are seen as a single device in the network, when a fail over
occurs, the source or destination port on one of the VLT peers becomes inactive causing the monitoring session to fail. As a result, Dell
Networking OS does not allow local Port mirroring based monitoring to be configured between VLT peers. However, you can create local
Port mirroring monitoring sessions separately on individual devices that are a part of the VLT configuration.
NOTE
: For more information on configuring VLT, see Configuring VLT.
VLT Non-fail over Scenario
Consider a scenario where port monitoring is configured to mirror traffic on a VLT device's port or LAG to a destination port on some
other device (TOR) on the network. When there is no fail over to the VLT peer, the VLTi link (ICL LAG) also receives the mirrored traffic
Port Monitoring
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