Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 261
Remote port monitoring, Session and VLAN requirements
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Configure source and destination port, and traffic direction OS10(conf-mon-local-1)# source interface ethernet 1/1/7-1/1/8 rx OS10(conf-mon-local-1)# destination interface ethernet1/1/1 OS10(conf-mon-local-1)# no shut View configured monitoring sessions In the State field, true indicates that the port is enabled. In the Reason field, Is UP indicates that hardware resources are allocated. OS10# show monitor session all S.Id Source Destination Dir SrcIP DstIP DSCP TTL State Reason 1 ethernet1/1/7 ethernet1/1/1 rx N/A N/A N/A N/A true Is UP Remote port monitoring Remote port monitoring allows you to monitor ingress and/or egress traffic on multiple source ports of multiple devices and forward the monitored traffic to multiple destination ports on different remote devices. Remote port monitoring helps network administrators monitor and analyze traffic to troubleshoot network problems in a time-saving and efficient way. In a remote port monitoring session, monitored traffic is tagged with a VLAN ID and switched on a user-defined, non-routable L2 VLAN. The VLAN is reserved in the network to carry only monitored traffic, which is forwarded on all egress ports of the VLAN. You must configure each intermediate switch that participates in the transport of monitored traffic with the reserved L2 VLAN. Remote port monitoring supports monitoring sessions in which multiple source and destination ports distribute across multiple network devices. Session and VLAN requirements Remote port monitoring requires a source session (monitored ports on different source devices), a reserved tagged VLAN for transporting monitored traffic (configured on source, intermediate, and destination devices), and a destination session (destination ports connected to analyzers on destination devices). • Configure any network device with source ports and destination ports and enable it to function in an intermediate transport session for a reserved VLAN at the same time for multiple remote port monitoring sessions. Enable and disable individual monitoring sessions. • A remote port monitoring session mirrors monitored traffic by prefixing the reserved VLAN tag to monitored packets to transmit using the reserved VLAN. • The source address, destination address, and original VLAN ID of the mirrored packet are prefixed with the tagged VLAN header. Untagged source packets are tagged with the reserved VLAN ID. Layer 2 261