Intel 654655-001 manual Custom filtering, get-lt-filter, add-cf-entry

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

1800-40-05-2D-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-onlock-offperm} <mac_address> <sport> <dport>

Adds a custom filter entry for the specified MAC address. lock-onindicates the entry won’t be aged out, but will be lost when the switch is reset. lock-offindicates the entry can be aged out normally. perm indicates the entry is written to NVRAM and restored on reset.

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