Ethernet Switch CLI Reference Guide
259
CHAPTER 66
Smart Isolation Commands
This chapter explains how to use commands to configure smart isolation on the Switch.
66.1 Smart Isolation Overview
To block traffic between two specific ports within the Switch, you can use port isolation or
private VLAN (see Chapter 57 on page 233 for more information). However, it does not work
across multiple switches. For example, broadcast traffic from isolated ports on a switch (say
B) can be forwarded to all ports on other switches (A and C), including the isolated ports.
Smart isolation allows you to prevent isolated ports on different switches from transmitting
traffic to each other. After you enable RSTP/MRSTP and smart isolation on the Switch, the
designated port(s) will be added to the isolated port list. In the following example, switch A is
the root bridge. Switch B’s root port 7 connects to switch A and switch B’s designated port 8
A
B
C
Isolated ports: 2~6
Root port: 7
Designated port: 8
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