Chapter 10: Bridge Filtering Commands
Efficient Networks
®
Router family
Command Line Interface Guide
Page 10-2
Efficient Networks
®
Input Format
filter br ?
Parameters
None
Response
Lists the supported bridge filtering commands and keywords and a brief description of
their function.
filter br add
Adds a bridging filter to the filtering database. The filter can allow or deny the
forwarding of packets based on the contents of the packets. The command specifies
the position within the packet that is checked and the data that must appear in that
location in order for the packet to match this filter.
Mgmt Class
Security (R/W)
Input Format
filter br add [pos] [data] allow | deny
Parameters
Example
Example command prevents forwarding of RARP packets across the bridge. The data
at byte offset 12 in each packet is checked and, if the data is hex 8035, the packet is
denied forwarding.
Response
Command prompt.
<pos>
a
a
Integer, 0 - 127
Byte offset within a packet.
<byte>
Hexadecimal number up to 6 bytes.
allow
Allows forwarding of the packet(s).
deny
Denies forwarding of the packet(s).
-> filter br add 12 8035 deny
