Remote Port Mirroring; Remote Port Mirroring Example - Dell S4048–ON Configuration Manual

S-series 10gbe switches

Hide thumbs Also See for S4048–ON:

Table of Contents

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

--------- ------ ----------- --------- ----

Te 1/1 Te 1/2

Remote Port Mirroring

While local port monitoring allows you to monitor traffic 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 traffic on multiple source

ports on different switches and forward the mirrored traffic to multiple destination ports on different switches.

Remote port mirroring helps network administrators monitor and analyze traffic to troubleshoot network problems in a time-saving

and efficient way.

In a remote-port mirroring 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 mirrored traffic, which is forwarded on all egress ports of the VLAN. Each

intermediate switch that participates in the transport of mirrored traffic must be configured with the reserved L2 VLAN. Remote

port monitoring supports mirroring sessions in which multiple source and destination ports are distributed across multiple switches

Remote port mirroring uses the analyzers shown in the aggregation network in Site A.

The VLAN traffic on monitored links from the access network is tagged and assigned to a dedicated L2 VLAN. Monitored links are

configured in two source sessions shown with orange and green circles. Each source session uses a separate reserved VLAN to

transmit mirrored packets (mirrored source-session traffic is shown with an orange or green circle with a blue border).

The reserved VLANs transport the mirrored traffic in sessions (blue pipes) to the destination analyzers in the local network. Two

destination sessions are shown: one for the reserved VLAN that transports orange-circle traffic; one for the reserved VLAN that

transports green-circle traffic.

interface Flow-based

Port Monitoring