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Catalyst 6500 Series Switch Command Reference—Release7.6
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Chapter2 Catalyst 6500 Series Switch and ROM Monitor Commands
set msfcautostate
set msfcautostate
To enable or disable the line protocol state determination of the Multilayer Switch Feature Cards
(MSFCs) due to port state changes, use the se t msfcauto state command.
set msfcautostate {enable | disable}
Syntax Description
Defaults The default is enabled.
Command Types Switch command.
Command Modes Privileged.
Usage Guidelines This feature is used to accurately reflect the Layer 3 interface status based on the underlying Layer 2
interface status so that routing and other protocols converge faster. Faster protocol convergence prevents
traffic from being discarded without notice.
When you enable the MSFC auto state feature, VLAN interfaces on the MSFC are activ e only wh en there
is at least one other active interface in the spanning tree forwarding st at e on t he Ca taly st 6500 ser ies
switch. This interface could be a physical end-user port, a trunk c onn ect ion for w hic h the VLA N i s
active, or even another MSFC with an equivalent VLAN interface.
If you enable and then disable or disable and then enable t he set msfcautostate command, you might
have to use the shutdown and no shutdown commands to disable and then restart the VLAN and WAN
interfaces on the MSFC.
If your FXS module ports are in an auxiliary VLAN and there are no switching module ports active in
the VLAN, the FXS module will not initialize because the MSFC auto state feature shuts do wn all MSFC
interfaces and subinterfaces. We recommend that you add a physical Ethernet port to the VLAN.
Caution You should not disable the MSFC auto state feature because the Layer 3 interface status might not
accurately reflect the Layer 2 interface status. If you d isable thi s fe atur e, t r affic might be d isca rd ed
without notice even though other valid traffic paths might exist.
Examples This example shows how to enable the line protocol state determination of the MSFC:
Console> (enable) set msfcautostate enable
Console> (enable)
This example shows how to disable the line protocol state determination of the MSFC:
Console> (enable) set msfcautostate disable
Console> (enable)
enable Activates the line protocol state determination.
disable Deactivates the line protocol state determination.