ZyXEL Communications MES3500 Series, Руководство пользователя

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Chapter 9 VLAN
MES3500 Series User’s Guide
104
9.10 Port-based VLAN Setup
Port-based VLANs are VLANs where the packet forwarding decision is based on the destination MAC
address and its associated port.
Port-based VLANs require allowed outgoing ports to be defined for each port. Therefore, if you wish
to allow two subscriber ports to talk to each other, for example, between conference rooms in a
hotel, you must define the egress (an egress port is an outgoing port, that is, a port through which
a data packet leaves) for both ports.
Port-based VLANs are specific only to the Switch on which they were created.
Note: When you activate port-based VLAN, the Switch uses a default VLAN ID of 1. You
cannot change it.
Note: In screens (such as IP Setup and Filtering ) that require a VID, you must enter 1
as the VID.
The port-based VLAN setup screen is shown next. The CPU management port forms a VLAN with all
Ethernet ports.
MAC Limit
Number Use this field to limit the number of (dynamic) MAC addresses that may be learned on a port
in a specified VLAN. For example, if you set this field to "5" on port 2, then only the devices
with these five learned MAC addresses may access port 2 at any one time. A sixth device
would have to wait until one of the five learned MAC addresses aged out. MAC address aging
out time can be set in the Switch Setup screen. The valid range is from “0” to “16384”. If
you enter 0 here, the Switch automatically changes to use the maximum value (16384).
Note: You also set the MAC address learning limit in the
Port Security
screen. If you
configure two different limits, the Switch bases on the smaller one.
Add Click Add to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Index This field displays the index number of the rule. Click an index number to change the
settings.
Active This field displays Yes when the rule is activated and No when is it deactivated.
VID This field displays the ID number of the VLAN to which the port belongs.
Port This field displays the number of the port to which this rule is applied.
MAC Learning This field displays Y when the MAC address learning limit is enabled in this rule. Otherwise,
it displays N .
MAC Limit
Number This is the maximum number of MAC addresses which a port can learn in a VLAN.
Delete Check the rule(s) that you want to remove in the Delete column and then click the Delete
button.
Cancel Click Cancel to clear the Delete check boxes.
Table 24
Advanced Application > VLAN > VLAN MAC Learning (continued)
LABEL DESCRIPTION