Concept Guide
The next example shows the conguration of an ERPM session in which VLAN 11 is monitored as the source interface and a MAC ACL
lters the monitored ingress trac.
DellEMC(conf)#mac access-list standard flow
DellEMC(config-std-macl)#seq 5 permit 00:00:0a:00:00:0b count monitor
DellEMC#show running-config interface vlan 11
!
interface Vlan 11
no ip address
tagged TenGigabitEthernet 1/1-3
mac access-group flow in <<<<<<<<<<<<<< Only ingress packets are supported for mirroring
shutdown
ERPM Behavior on a typical Dell EMC Networking OS
The Dell EMC Networking OS is designed to support only the Encapsulation of the data received / transmitted at the specied source port
(Port A). An ERPM destination session / decapsulation of the ERPM packets at the destination Switch are not supported.
Figure 105. ERPM Behavior
As seen in the above gure, the packets received/transmitted on Port A will be encapsulated with an IP/GRE header plus a new L2 header
and sent to the destination ip address (Port D’s ip address) on the snier. The Header that gets attached to the packet is 38 bytes long.
If the snier does not support IP interface, a destination switch will be needed to receive the encapsulated ERPM packet and locally mirror
the whole packet to the Snier or a Linux Server.
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Port Monitoring