Zyxel VES-1624FT-55A [91/312] Switch modes

Zyxel VES-1624FT-55A [91/312] Switch modes
VES-1624FT-55A User’s Guide
91
CHAPTER 13
Switch Setup
The Switch Setup screen allows you to set up and configure global device features.
13.1 Switch Modes
The IP DSLAM supports daisychain and aggregation switch modes.
13.1.1 Daisychain Switch Mode
Daisychain switch mode sets the IP DSLAM 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) IP DSLAM. When you daisychain multiple IP DSLAM they
must all be set to daisychain mode.
Daisychain switch mode with port isolation enabled blocks communications between
subscriber ports on an individual IP DSLAM and between the subscribers of any daisychained
IP DSLAM (see Figure 40 on page 92 for an example). Use the same port isolation setting on
all IP DSLAM that you set up in a daisychain.
13.1.2 Port Isolation with Daisychain Switch Mode Example
In the example below, the IP DSLAM 1 has its Ethernet port one (ENET 1) connected to the
Ethernet backbone switch (3) and it’s Ethernet port two (ENET2) connected to Ethernet port
one (ENET 1) of the daisychained IP DSLAM (2).
With port isolation turned on, communications between A and B must first go through another
switch or router (3 in the figure). A and B also cannot communicate with C without their
communications going through another switch or router.

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