Mac Address Filtering Examples - 3Com PathBuilder S200 Series Owner's Manual

Bridge Filtering

MAC Address Filtering Examples

Introduction
First Example
How To Configure
the Example in
Figure 32
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This section shows two filtering examples. Figure 32 shows how the source address
can be used to filter frames. Figure 35 shows how the MAC Address Filter Table can
be used to filter frames by combining multiple source and destination addresses.
In Figure 32, the source address (MAC Address represented by A) is used to filter
frames passing in or out of the bridge via links 1, 5, and 6 (Figure 32). Frames
originating from the station with MAC Address A are to be sent to server B but not
server C. Figure 32 shows that for bridge link 1, Incoming Source Address frames
with MAC Address A are passed, and Outgoing Source Address frames with MAC
Address A are passed on link 5, but blocked on link 6.
Source Address
A
PB S200
Incoming
Source
Token
1
Bridge
Ring 1
Pass
Incoming Source Address: Pass Link 1
Outgoing Source Address: Pass Link 5; Do Not Pass Link 6 (Block)
Figure 32. Example of Bridge Links Configured to Filter Selected MAC
Address Frames
To configure something similar to Figure 32, complete the Bridge Link record for the
bridge and the MAC Address Filter Table as shown in these tables.
Configuring the Bridge Link Record
Parameter
Entry Number
MAC Address Filter Action
Pass
5
Outgoing
Source
Outgoing
Source
6
Block
1
Pass
Token
B
PB S200
Ring 2
Token
PB S200
C
Ring 3
Values
5 6
Pass Pass
Bridging