Install Guide

no disable
DellEMC#show run acl
!
ip access-list extended acl2
seq 10 permit tcp any 2.1.1.0/24 lt 140 count bytes monitor
!
ip access-list extended acl3
seq 15 permit udp 4.1.1.0/24 any neq 150 count bytes monitor
!
ip access-list extended acl4
seq 20 permit ip any any count bytes monitor
DellEMC(conf)#do show ip access-lists in
Extended Ingress IP access list acl3
seq 15 permit udp 4.1.1.0/24 any neq 150 monitor count bytes (6400 bytes)
DellEMC(conf)#
DellEMC(conf)#do show ip accounting access-list
!
Extended Ingress IP mirror access list acl3 on twentyFiveGigE 1/1
Total cam count 16
seq 15 permit udp 4.1.1.0/24 any neq 150 monitor count bytes (6400 bytes)
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 Example
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.
Port Monitoring
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