ZyXEL Communications SAM1316-22, User Manual

Page: 82 / 464

Chapter 10 Switch Setup
SAM1316-22 User’s Guide
82
Standalone switch mode with port isolation enabled blocks communications
between subscriber ports on an individual SAM1316-22. However, one SAM1316-
22’s subscribers can communicate with another SAM1316-22’s subscribers if the
two SAM1316-22’s Ethernet ports are connected to each other (see
Figure 38 on
page 82 for an example). If you have multiple SAM1316-22 connected on the
same network and set to standalone mode, they do not all need to have the same
port isolation setting.
10.2.2 Port Isolation with Standalone Switch Mode Example
The following graphic shows SAM1316-22 1 and 2 connected to each other and
the Ethernet backbone switch (3) in a network topology that creates a loop. The
SAM1316-22 are using the standalone switch mode and have RSTP enabled.
In this example, both SAM1316-22 have port isolation turned on. Communications
between A and B must first go through another switch (3 in the figure). However,
A and B can communicate with C without their communications going through
another switch or router.
Figure 38 Port Isolation with Standalone Switch Mode Example
10.2.3 Daisychain Switch Mode
Daisychain switch mode sets the SAM1316-22 to use Ethernet port one (ENET 1)
as an uplink port to connect to the Ethernet backbone and Ethernet port two
(ENET 2) to connect to another (daisychained or subtending) SAM1316-22. The
daisychain switch mode is recommended for use in a network topology that does