SNR S2940-8G-v2 Switch Configuration Guide
Flow-based Redirection
Chapter 27
Flow-based Redirection
27.1 Introduction to Flow-based Redirection
Flow-based redirection function enables the switch to transmit the data frames meeting some
special condition (specified by ACL) to another specified port. The fames meeting a same special
condition are called a class of flow, the ingress port of the data frame is called the source port
of redirection, and the specified egress port is called the destination port of redirection. Usually
there are two kinds of application of flow-based redirection: 1. connecting a protocol analyzer
(for example, Sniffer) or a RMON monitor to the destination port of redirection, to monitor and
manage the network, and diagnose the problems in the network; 2. Special transmission policy
for a special type of data frames.
The switch can only designate a single destination port of redirection for a same class of flow
within a source port of redirection, while it can designate different destination ports of redirection
for different classes of flows within a source port of redirection. The same class of flow can be
applied to different source ports.
27.2 Flow-based Redirection Configuration Task Sequence
• Flow-based redirection configuration
• Check the current flow-based redirection configuration
1. Flow-based redirection configuration
Command Explanation
Physical Interface Configuration Mode
access-group
<aclname>
redi-
rect to interface [ethernet <IF-
NAME> | <IFNAME>]
no
access-group
<aclname>
redirect
Specify flow-based redirection for the port; the 'no access-
group
<aclname>
redirect'
command
is
used
to
delete
flow-
based redirection.
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