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C H A P T E R
2
Intel Express 100BASE-TX Switching Hub
Custom filtering
Custom filters are useful for ensuring that a device can reach other
devices regardless of where the device is attached. For example, if
you have a laptop computer that acts as a management station, you
want to make sure you can reach your servers from any part of your
network, even if some segments have security VLAN restrictions.
The custom filter entry for an address is shown onscreen as a matrix.
The source (SRC) column lists the available source ports (1 through 7,
where ports 1 and 2 may or may not be installed). The other columns
each represent an available destination port. A + represents a
forwarding path. In the example, each source port (except port 3,
because ports don’t forward frames to themselves) forwards frames to
port 3.
SYS_console>get-lt-filter 00-40-05-2D-9D-49
18 00-40-05-2D-9D-49 LOCK_OFF SELF_OFF — VIRTUAL LAN ——-
SRC PORT to : MGMT P1 P2 P3 P4 P5 P6 P7
==============================================
1 - - - + - - - -
2 - - - + - - - -
3 - - - - - - - -
4 - - - + - - - -
5 - - - + - - - -
6 - - - + - - - -
7 - - - + - - - -
get-lt-filter
get-lt-filter <
mac_address>
Displays the custom filter for the specified MAC address. See the
example above.
add-cf-entry
add-cf-entry {lock-on|lock-off|perm} <
mac_address> <sport> <dport>
Adds a custom filter entry for the specified MAC address.
lock-on
indicates the entry won’t be aged out, but will be lost when the switch
is reset.
lock-off
indicates the entry can be aged out normally.
perm
indicates the entry is written to NVRAM and restored on reset.
Summary of Contents for Express 100BASE-TX
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