Administrator Guide

Layer 2 Switching Commands 669
• acl-name — An IP or MAC ACL name.
•
remote vlan rspan-vlan-id — An RSPAN VLAN.
•
rx — Monitors received packets only. If no option specified, monitors both
rx and tx.
•
tx — Monitors transmitted packets only. If no option is specified, monitors
both rx and tx.
•
both —Monitors both ingress and egress. This is the default.
Default Configuration
The default is to monitor both transmit and receive directions. If neither tx or
rx is configured, both directions are monitored.
Command Mode
Global Configuration mode
User Guidelines
The source of a monitoring session must be configured before the destination
can be configured. Up to four sessions monitoring traffic in a single direction
and with unique destinations are supported on the Dell Networking N2000,
N3000, and N4000 Series switches. The Dell Networking N1500 Series
switches supports a single unidirectional or bidirectional session. Each session
supports multiple sources. However, the destination interface within a session
may not overlap with other sessions. The internal CPU port cannot be
configured as an RSPAN source.
The session limitations are as follows (N2000, N3000, N4000 only):
• Up to 4 sessions in ingress (RX) traffic mirroring may be active.
• Up to 4 sessions with egress (TX) traffic mirroring may be active.
• Up to 2 sessions with both (RX and TX) traffic mirroring may be active.
• Any other combination of up to 4 total ingress or egress mirroring may be
active.
Destination interfaces do not perform MAC learning and drop ingress traffic
(forwarding is disabled). Destination interfaces must be dedicated to the
monitoring function (i.e., connected to a PC running WireShark or some
other packet decoder). For RSPAN, the reflector port need not be dedicated
2CSNXXX_SWUM204.book Page 669 Monday, January 25, 2016 1:25 PM