Cisco Cisco Aironet 340 Ethernet Bridges Guia Do Utilizador
Using Filters 11 - 5
Filtering Node Addresses (Node)
The node option allows you to control the forwarding of packets based
on the source node addresses. As with multicast filtering, there is a
default action for those addresses not in the table. You may enter actions
for specific addresses to override the default action.
on the source node addresses. As with multicast filtering, there is a
default action for those addresses not in the table. You may enter actions
for specific addresses to override the default action.
Specific node filters may be entered by specifying either the 6 byte
infrastructure address of the node or by specifying its IP address. If the
IP address is used, the Aironet 340 Series Bridge will determine the
infrastructure address associated with the IP address and use this for the
actual filtering.
infrastructure address of the node or by specifying its IP address. If the
IP address is used, the Aironet 340 Series Bridge will determine the
infrastructure address associated with the IP address and use this for the
actual filtering.
You may filter packets based on the source address in the received
packet. For example, if you wanted to prevent all but a limited number
of hosts to communicate with nodes on the radio network, you would set
the default action to discard. Then add entries for the specific hosts
whose action is “forward”.
packet. For example, if you wanted to prevent all but a limited number
of hosts to communicate with nodes on the radio network, you would set
the default action to discard. Then add entries for the specific hosts
whose action is “forward”.
Setting the Destination Address (Ethdst and Raddst)
The unit is always performing filtering based on the destination MAC
address of the packets it receives. The Bridge will learn where a node is
based on the source address of received packets and then can make a
decision as to whether to forward a packet based on its knowledge of the
location of the node.
address of the packets it receives. The Bridge will learn where a node is
based on the source address of received packets and then can make a
decision as to whether to forward a packet based on its knowledge of the
location of the node.
These options set the default actions when doing destination address fil-
tering. The Ethdst value specifies the default action for packets received
on the ethernet. The Raddst action specifies the default action for packet
received on the radio interface. The value allowed are discard or for-
ward.
tering. The Ethdst value specifies the default action for packets received
on the ethernet. The Raddst action specifies the default action for packet
received on the radio interface. The value allowed are discard or for-
ward.
Filter Node Menu
Option Value Description
1 - Ethdst [ forward ] - Destination address from ethernet
2 - Raddst [ forward ] - Destination address from radio
3 - Source [ off ] - Source addresses
4 - Display - Display the node address filters
5 - Ipdisplay - Display the IP address filters
6 - Add - Add a node address filter
7 - Remove - Remove a node address filter
Enter an option number or name, “=” main menu, <ESC> previous menu
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