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AAM1212 User's Guide
76
for an example). When the AAM is in standalone mode, you can use it in a network
topology that uses loops (you should also enable RSTP). You can have multiple AAMs
connected on the same network and set both of them to use standalone mode in order to use
them with a network topology that uses loops.
When in standalone switch mode, the AAM uses both Ethernet ports (LAN 1 and LAN 2) as
uplink ports and only forwards IGMP queries to the ADSL ports.
Standalone switch mode with port isolation enabled blocks communications between
subscriber ports on an individual AAM. However, one AAM's subscribers can communicate
with another AAM's subscribers if the two AAMs' Ethernet ports are connected to each other
(see
Figure 38 on page 76
network and set to standalone mode, they do not all need to have the same port isolation
setting.
7.5.2 Port Isolation with Standalone Switch Mode Example
The following graphic shows AAMs 1 and 2 connected to each other and the Ethernet
backbone switch (3) in a network topology that creates a loop. The AAMs are using the
standalone switch mode and have RSTP enabled.
In this example, both AAMs 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
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for an example). If you have multiple AAMs connected on the same
Chapter 7 Basic Setting Screens
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Troubleshooting
