- Index
- Preface
- Product Overview
-
- Configuring Ethernet Interfaces
- Configuring VLANs
- Configuring Private VLANs
- Configuring Rapid PVST+
- Configuring Multiple Spanning Tree
- Configuring STP Extensions
- Configuring Port Channels
- Configuring Access and Trunk Interfaces
- Configuring the MAC Address Table
- Configuring IGMP Snooping
- Configuring Traffic Storm Control
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- Configuring Fibre Channel Interfaces
- Configuring Domain Parameters
- Configuring N-Port Virtualization
- Configuring VSAN Trunking
- Configuring SAN PortChannels
- Configuring and Managing VSANs
- Configuring and Managing Zones
- Distributing Device Alias Services
- Configuring Fibre Channel Routing Services and Protocols
- Managing FLOGI, Name Server, FDMI, and RSCN Databases
- Discovering SCSI Targets
- Advanced Features and Concepts
- Configuring FC-SP and DHCHAP
- Configuring Port Security
- Configuring Fabric Binding
- Configuring Fabric Configuration Servers
- Configuring Port Tracking
Configuring Virtual Interfaces
This section describes the configuration of virtual interfaces on the Cisco Nexus 5000 Series switches. It includes the following sections:
Information About Virtual Interfaces
Cisco Nexus 5000 Series switches support Fibre Channel over Ethernet (FCoE), which allows Fibre Channel and Ethernet traffic to be carried on the same physical Ethernet connection between the switch and the servers. For additional information about FCoE, see Chapter1, “Configuring FCoE”
The Fibre Channel portion of FCoE is configured as a virtual Fibre Channel interface. Logical Fibre Channel features (such as interface mode) can be configured on virtual Fibre Channel interfaces.
Note
Virtual interfaces are created with the administrative state set to down. You need to explicitly configure the administrative state to bring the virtual interface into operation.
Guidelines and Limitations
When configuring virtual interfaces, note the following guidelines and limitations:
- Each virtual Fibre Channel interface must be bound to an FCoE-enabled Ethernet interface. FCoE is supported on 10-Gigabit Ethernet interfaces.
- Each virtual Fibre Channel interface is associated with only one VSAN.
- Any VSAN with associated virtual Fibre Channel interfaces must be mapped to a dedicated FCOE-enabled VLAN.
- FCoE is not supported on private VLANs.
Configuring Virtual Interfaces
This section describes how to configure virtual interfaces, and it includes the following topics:
- Creating a Virtual Fibre Channel Interface
- Mapping VSANs to VLANs
- Deleting a Virtual Fibre Channel Interface
Creating a Virtual Fibre Channel Interface
The Ethernet interface that you bind the virtual Fibre Channel interface to must be configured as follows:
- It must be a trunk port (use the switchport mode trunk command)
- The FCoE VLAN that corresponds to virtual Fibre Channel’s VSAN must be in the allowed VLAN list
- FCoE VLAN must not be configured as the native VLAN of the trunk port.
- The Ethernet interface must be configured as portfast (use the spanning-tree port type edge trunk command)
Following the above configuration guidelines will ensure a smooth upgrade to a T11 Fibre Channel Initialization Protocol (FIP) based FCoE release in the future.
To create a virtual Fibre Channel interface, perform this task:
Mapping VSANs to VLANs
To create a mapping between a VSAN and its associated VLAN, perform this task:
The following example shows how to configure the VLAN on a physical Ethernet address, create virtual Fibre Channel interface 4, bind vfc 4 to the physical Ethernet interface, enable associated VLAN 200, and map VLAN 200 to VSAN 2:
switch(config)# interface ethernet 1/2
switch(config-if)# switchport mode trunk
switch(config-if)# switchport trunk allowed vlan 1,200
switch(config)# interface vfc 4
switch(config-if)# bind interface ethernet 1/2
switch(config-if)# exit
switch(config)# vlan 200
switch(config-vlan)# fcoe vsan 2
switch(config-vlan)# exit
switch(config)# vsan database
switch(config-vsan)# vsan 2 interface vfc 4
Deleting a Virtual Fibre Channel Interface
To delete a virtual Fibre Channel interface, perform this task:
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The following example shows how to delete a virtual Fibre Channel interface:
switch(config)# no interface vfc 4
switch(config-if)# exit
Verifying Virtual Interface Information
To display configuration information about virtual interfaces, perform one of the following tasks:
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Displays the detailed configuration of the specified Fibre Channel interface. |
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The following example shows how to display information about a virtual Fibre Channel interface:
vfc3 is down
Bound interface is Ethernet3/2
Hardware is GigabitEthernet
Port WWN is 20:01:00:0d:ec:6d:81:3f
Admin port mode is F
snmp link state traps are enabled
Port vsan is 1
Beacon is turned unknown
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
0 frames input, 0 bytes
0 discards, 0 errors
0 frames output, 0 bytes
0 discards, 0 errors
The following example shows the status of all the interfaces on the switch (some output has been removed for brevity):
Interface Vsan Admin Admin Status SFP Oper Oper Port
Mode Trunk Mode Speed Channel
Mode (Gbps)
-------------------------------------------------------------------------------
fc3/1 1 auto on trunking swl TE 2 --
fc3/2 1 auto on sfpAbsent -- -- --
...
fc3/8 1 auto on sfpAbsent -- -- --
-------------------------------------------------------------------------------
Interface Status IP Address Speed MTU Port
Channel
-------------------------------------------------------------------------------
Ethernet1/1 hwFailure -- -- 1500 --
Ethernet1/2 hwFailure -- -- 1500 --
Ethernet1/3 up -- 10000 1500 --
...
Ethernet1/39 sfpIsAbsen -- -- 1500 --
Ethernet1/40 sfpIsAbsen -- -- 1500 --
-------------------------------------------------------------------------------
Interface Status IP Address Speed MTU
-------------------------------------------------------------------------------
mgmt0 up 172.16.24.41 100 1500
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Interface Vsan Admin Admin Status SFP Oper Oper Port
Mode Trunk Mode Speed Channel
Mode (Gbps)
-------------------------------------------------------------------------------
vfc 1 1 F -- down -- -- --
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