Port Isolation With Standalone Switch Mode Example; Daisychain Switch Mode; Figure 52 Port Isolation With Standalone Switch Mode Example - ZyXEL Communications IES-1248-51 User Manual

IES-1248-51/51A/53 User's Guide

13.2.2 Port Isolation with Standalone Switch Mode Example

The following graphic shows IES-1248 1 and 2 connected to each other and the Ethernet
backbone switch (3) in a network topology that creates a loop. The IES-1248 are using the
standalone switch mode and have RSTP enabled.
In this example, both IES-1248 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 52 Port Isolation with Standalone Switch Mode Example

13.2.3 Daisychain Switch Mode

Daisychain switch mode sets the IES-1248 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) IES-1248. The daisychain switch mode is recommended for use
in a network topology that does not have loops. When you daisychain multiple IES-1248 they
must all be set to daisychain mode.
Daisychain switch mode with port isolation enabled blocks communications between
subscriber ports on an individual IES-1248 and between the subscribers of any daisychained
IES-1248 (see
all IES-1248 that you set up in a daisychain.
110
Figure 53 on page 111 for an example). Use the same port isolation setting on
Chapter 13 Switch Setup