4. Create Source RPM session as follows (port-channel 1 and port-channel 2 are LACP).Dell(conf)#monitor session 1 type rpmDell(conf-mon-sess-1)#source port-channel 1 destination remote-vlan 10 dir rxDell(conf-mon-sess-1)#no disable5. Show the output for the LACP.Dell#show interfaces port-channel briefCodes: L - LACP Port-channelO - OpenFlow Controller Port-channelLAG Mode Status Uptime PortsL1 L3 up 00:01:17 Te 1/4 (Up)L2 L2 up 00:00:58 Te 1/5 (Up)Dell#Encapsulated Remote Port MonitoringEncapsulated Remote Port Monitoring (ERPM) copies traffic from source ports/port-channels or source VLANs and forwards thetraffic using routable GRE-encapsulated packets to the destination IP address specified in the session.Important:When configuring ERPM, follow these guidelines• The Dell Networking OS supports ERPM source session only. Encapsulated packets terminate at the destination IP addressor at the analyzer.• You can configure up to four ERPM source sessions on switch.• The system MTU should be configured properly to accommodate the increased size of the ERPM mirrored packet.• The maximum number of source ports that can be defined in a session is 128.• The system encapsulates the complete ingress or egress data under GRE header, IP header and outer MAC header andsends it out at the next hop interface as pointed by the routing table.• The keyword ‘flow-based enable’ should have been specified in case of source as vlan or where monitoring on a per flowbasis is desired.• The keyword monitor should have been specified in the access list rules for which we need to mirror.• The maximum number of source ports that can be defined in a session is 128.• The system allows to configure upto 4 ERPM sessions.• ERPM sessions do not copy locally sourced remote VLAN traffic from source trunk ports that carry RPM VLANs. ERPMsessions do not copy locally sourced ERPM GRE-encapsulated traffic from source ports.• Source Vlan monitoring can be done only for ingress packets and is not supported for egress direction.• A flow-based source VLAN can be monitored only for ingress traffic (not egress traffic). direction.Changes to Default Behavior• Rate-limiting ïs no longer done for ERSPAN traffic.• Same port can be configured as both source and destination in an ERSPAN session.• TTL and ToS values can be configured in IP header of ERSPAN traffic.Configuration steps for ERPMTo configure an ERPM session:Table 66. Configuration steps for ERPMStep Command Purpose1 configure terminal Enter global configuration mode.Port Monitoring 655
