Enable Fabric Attach on an Interface
Use this procedure to enable Fabric Attach on an interface (port, static MLT or LACP MLT). Enabling FA on an MLT enables FA on all ports of the MLT. If your platform supports channelization, FA can also be enabled on channelized ports.
You can also enable FA Ring Topology Change Notification (TCN) processing on an interface that connects to an ISW-Series Managed Industrial Ethernet Switches (ISW) switch. For more information about FA TCN, see Fabric Attach Ring with ISW-Series Managed Industrial Ethernet Switches.
Before you begin
Verify that FA is enabled globally on the switch.
About this task
Enabling FA on a port or MLT is necessary for element discovery.
On the FA Server, FA is enabled globally by default. However, you must explicitly enable FA on the desired port or MLT interface. FA is successfully enabled on an MLT only if all ports of the MLT have FA successfully enabled. Enabling FA automatically configures LLDP on all ports. Tagging is configured and spanning tree is disabled.
Procedure
Examples
Enable FA on a port:
Switch:1>en Switch:1#conf t Enter configuration commands, one per line. End with CNTL/Z. Switch:1(config)#interface gigabitethernet 1/2 Switch:1(config-if)#fa enable
Enable FA on an MLT:
Switch:1>en Switch:1#conf t Enter configuration commands, one per line. End with CNTL/Z. Switch:1(config)#interface mlt 2 Switch:1(config-mlt)#fa enable
Verify that FA is enabled on the interfaces.
Note
When FA is enabled, message authentication is enabled by default. The authentication key is set to the default value and displays encrypted on the output.
Switch:1>show fa interface ======================================================================== Fabric Attach Interfaces ======================================================================== INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY ------------------------------------------------------------------------ Port 1/1 enabled 0 0 enabled **** Port1/10 enabled 0 0 enabled **** Port1/6 enabled 0 0 enabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** ------------------------------------------------------------------------ 5 out of 5 Total Num of fabric attach interfaces displayed ------------------------------------------------------------------------
For example, disable FA on port 1/1.
Switch:1(config)#interface gigabitethernet 1/1 Switch:1(config-if)#no fa enable Switch:1(config-if)#exit
Verify that FA is disabled on port 1/1.
Switch:1(config)#show fa interface =========================================================================== Fabric Attach Interfaces =========================================================================== INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY --------------------------------------------------------------------------- Port 1/1 disabled 0 0 disabled **** Port1/10 enabled 0 0 enabled **** Port1/6 enabled 0 0 enabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** --------------------------------------------------------------------------- 5 out of 5 Total Num of fabric attach interfaces displayed ---------------------------------------------------------------------------
View the FA interfaces that have authentication enabled:
Switch:1(config)#show fa interface enabled-auth =========================================================================== Fabric Attach Interfaces =========================================================================== INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY --------------------------------------------------------------------------- Port1/10 enabled 0 0 enabled **** Port1/6 enabled 0 0 enabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** --------------------------------------------------------------------------- 2 out of 2 Total Num of fabric attach interfaces displayed ---------------------------------------------------------------------------
Optionally, disable FA message authentication on port 1/6.
Switch:1(config)#interface gigabitethernet 1/6 Switch:1(config-if)#no fa message-authentication Switch:1(config-if)#exit
Verify that both FA and FA message authentication are disabled on port 1/6, as indicated by the SERVER STATUS and MSG AUTH STATUS fields respectively.
Switch:1(config)#show fa interface ============================================================================= Fabric Attach Interfaces ============================================================================= INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY ----------------------------------------------------------------------------- Port 1/1 disabled 0 0 disabled **** Port1/10 enabled 0 0 enabled **** Port1/6 disabled 0 0 disabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** ----------------------------------------------------------------------------- 4 out of 4 Total Num of fabric attach interfaces displayed -----------------------------------------------------------------------------
View the FA interfaces that have authentication disabled:
Switch:1(config)#show fa interface disabled-auth ============================================================================= Fabric Attach Interfaces ============================================================================= INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY ----------------------------------------------------------------------------- Port 1/1 disabled 0 0 disabled **** Port1/6 disabled 0 0 disabled **** ----------------------------------------------------------------------------- 2 out of 2 Total Num of fabric attach interfaces displayed -----------------------------------------------------------------------------
Verify the FA interfaces that have TCN enabled.
Switch:1>show fa interface ======================================================================== Fabric Attach Interfaces ======================================================================== INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY ------------------------------------------------------------------------ Port 1/1 enabled 0 0 enabled **** enabled CONFIG Port1/10 enabled 0 0 enabled **** Port1/6 enabled 0 0 enabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** enabled CONFIG ------------------------------------------------------------------------ 5 out of 5 Total Num of fabric attach interfaces displayed ------------------------------------------------------------------------
Verify the FA interfaces that have TCN is disabled when FA is disabled.
Switch:1>show fa interface ======================================================================== Fabric Attach Interfaces ======================================================================== INTERFACE SERVER MGMT MGMT MSG AUTH MSG AUTH TCN ORIGIN STATUS ISID CVID STATUS KEY ------------------------------------------------------------------------ Port 1/1 disabled 0 0 disabled **** disabled CONFIG Port1/10 enabled 0 0 enabled **** Port1/6 enabled 0 0 enabled **** Port1/11 enabled 0 0 enabled **** Mlt2 enabled 0 0 enabled **** enabled CONFIG ------------------------------------------------------------------------ 5 out of 5 Total Num of fabric attach interfaces displayed ------------------------------------------------------------------------
Variable definitions
The following table defines parameters for the show fa interface command.
Variable |
Value |
---|---|
disabled-auth |
Displays the FA interfaces (port or MLT) that have authentication disabled. |
enabled-auth |
Displays the FA interfaces (port or MLT) that have authentication enabled. |
<1–512> |
The valid range for MLT ID. Displays FA configuration on the specified MLT interface. |
port {slot/port[/sub-port][-slot/port[/sub-port]][,...][slot/all][all]} |
Identifies the
slot and port in one of the following formats:
Displays FA configuration on the specified port. |