Appendix D: IP-Based and Chassis Management Parameters Transition Networks
Table 28: Port Configuration Parameters (continued)
Parameter IP based Chassis Description
9 9
Virtual Cable Test The virtual cable test determines the
quality of the cable, connectors, and
terminations. Problems such as opens,
shorts, and cable impendence mismatch
can be diagnosed with this test.
9
VLAN Status 802.1q VLAN can be disabled or enabled
along with setting the following options:
Secure: The VLAN ID must be
contained in the VLAN database (Db)
and the ‘ingress’ port must be a member
of the VLAN or else it will be discarded.
Check: The VLAN ID must be contained
in the VLAN Db or the frame will be
discarded.
Fallback: The frames are not discarded if
their VLAN ID is not in the VLAN Db.
In all the above cases, the frames are
allowed to exit ports that are members of
the frame's VLAN, including the source
port's VLAN table
(sfbrm100PortBasedVLANTbl).
Also, frames that do not have a VLAN ID
in the Db can exit only ports in the
VLAN table.
Disabled: 802.1q is disabled.
9
VLAN Table This is a bitmap that restricts the output
ports that this input port can send frames
to. To send frames through port ‘2,’ bit
‘2’ of this value must be set to ‘1.’
9
VLAN Tunnel When enabled, frames that have a source
address in the forwarding database are
allowed to bypass Port-based VLAN,
IEEE 802.1q VLAN and trunk masking.
Continued on next page
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