Cisco Nexus 5600 Series Configuration Manual page 28

System Management Features
Feature
ERSPAN
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
6
Description
Encapsulated remote switched port analyzer
(ERSPAN) is used to transport mirrored traffic in an
IP network. ERSPAN supports source ports, source
VLANs, and destinations on different switches, which
provide remote monitoring of multiple switches across
your network. ERSPAN uses a generic routing
encapsulation (GRE) tunnel to carry traffic between
switches.
ERSPAN consists of an ERSPAN source session,
routable ERSPAN GRE-encapsulated traffic, and an
ERSPAN destination session. You separately
configure ERSPAN source sessions and destination
sessions on different switches.
To configure an ERSPAN source session on one
switch, you associate a set of source ports or VLANs
with a destination IP address, ERSPAN ID number,
and virtual routing and forwarding (VRF) name. To
configure an ERSPAN destination session on another
switch, you associate the destinations with the source
IP address, the ERSPAN ID number, and a VRF
name.
The ERSPAN source session copies traffic from the
source ports or source VLANs and forwards the traffic
using routable GRE-encapsulated packets to the
ERSPAN destination session. The ERSPAN
destination session switches the traffic to the
destinations.
Overview
OL-31641-01