HP 6125XLG User manual
HP 6125XLG Blade Switch
FCoE
Configuration Guide
Part number: 5998-3726
Software version: Release 2306
Document version: 6W100-20130912
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Contents
FCoE overview ····························································································································································· 1
Storage area network·······················································································································································1
FC SAN··············································································································································································1
FC protocol ········································································································································································2
Basic concepts ··························································································································································2
Communication flow ················································································································································3
VSAN·········································································································································································4
FC zone ·····································································································································································4
FCoE ···················································································································································································5
Basic concepts ··························································································································································5
How FCoE works······················································································································································7
FCoE modes·······································································································································································8
FCF mode··································································································································································9
NPV mode·································································································································································9
Protocols and standards ················································································································································ 10
Configuring an FCoE mode ······································································································································11
FCoE features supported in different FCoE modes ····································································································· 11
Configuration procedure··············································································································································· 11
Configuring VFC interfaces and FIP··························································································································13
VFC interfaces and FIP configuration task list ············································································································· 13
Configuring a VFC interface········································································································································· 13
Enabling FCoE for a VLAN and mapping a VSAN to the VLAN ············································································· 14
Configuration restrictions and guidelines ··········································································································· 14
Configuration procedure ······································································································································ 14
Configuring the FC-MAP value ····································································································································· 15
Configuring the FKA advertisement period value······································································································· 15
Configuring the FCF priority ········································································································································· 16
Configuring the system FCF priority ···················································································································· 16
Configuring the VFC interface FCF priority ········································································································ 16
Displaying and maintaining VFC interfaces and FIP·································································································· 16
VFC interfaces and FIP configuration example··········································································································· 17
Network requirements··········································································································································· 17
Configuration procedure ······································································································································ 17
Setting up a fabric ·····················································································································································21
Overview········································································································································································· 21
Principal switch selection······································································································································ 21
Domain ID assignment ·········································································································································· 22
FC address assignment········································································································································· 23
Fabric setup configuration task list······························································································································· 23
Building a fabric statically···································································································································· 23
Building a fabric dynamically ······························································································································ 24
Enabling or disabling the fabric configuration function ···························································································· 24
Setting a fabric name ···················································································································································· 25
Setting the switch priority ·············································································································································· 25
Configuring the allowed domain ID list······················································································································· 26
Configuring a domain ID for a switch ························································································································· 26
Configuring the mapping between the N_Port WWN and the FC address ··························································· 27
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Configuring the fabric timers ········································································································································ 27
Configuring the fabric timers in system view······································································································ 28
Configuring the fabric timers in VSAN view······································································································ 28
Configuring the fabric reconfiguration ························································································································ 28
Configuring the auto fabric reconfiguration function ························································································ 29
Manually initiating the fabric reconfiguration···································································································· 29
Configuring a VFC interface to reject incoming RCF requests·················································································· 29
Configuring and obtaining FC4 information of nodes ······························································································ 30
Enabling auto discovery of SCSI-FCP information ····························································································· 30
Configuring the default FC4 information for a node························································································· 31
Displaying and maintaining a fabric ··························································································································· 31
Static fabric building configuration example·············································································································· 32
Network requirements··········································································································································· 32
Configuration procedure ······································································································································ 32
Verifying the configurations ································································································································· 36
Dynamic fabric building configuration example ········································································································ 37
Network requirements··········································································································································· 37
Configuration procedure ······································································································································ 38
Verifying the configurations ································································································································· 45
Configuring VSAN·····················································································································································47
VSAN fundamentals······················································································································································· 47
Trunk VSAN in an FC network····························································································································· 47
Trunk VSAN in an FCoE network ························································································································ 47
Creating a VSAN··························································································································································· 48
Configuring a trunk VSAN············································································································································ 48
Displaying and maintaining VSAN······························································································································ 48
VSAN configuration example······································································································································· 48
Network requirements··········································································································································· 48
Configuration considerations ······························································································································· 49
Configuration procedure ······································································································································ 49
Verifying the configurations ································································································································· 52
Configuring FC routing and forwarding ··················································································································54
Overview········································································································································································· 54
Routing table and FIB table ·································································································································· 54
Direct routes ··························································································································································· 55
Static routes···························································································································································· 56
FSPF routes ····························································································································································· 56
Configuring static routes for FC···································································································································· 57
Configuration restrictions and guidelines ··········································································································· 57
Configuration procedure ······································································································································ 58
Configuring FSPF···························································································································································· 58
FSPF configuration task list ··································································································································· 58
Enabling FSPF ························································································································································ 58
Configuring the shortest SPF calculation interval ······························································································· 59
Configuring the minimum LSR receiving interval································································································ 59
Configuring the minimum LSR refresh interval···································································································· 59
Configuring the FSPF cost for an interface ········································································································· 60
Configuring the hello interval for an interface ··································································································· 60
Configuring the dead interval for an interface ·································································································· 60
Configuring the LSR retransmission interval for interfaces ················································································ 61
Disabling FSPF for an interface···························································································································· 61
Configuring FSPF GR ············································································································································ 62
Displaying and maintaining FC routing and forwarding ·························································································· 62
iii
Static FC routing configuration example ····················································································································· 63
Network requirements··········································································································································· 63
Configuration procedure ······································································································································ 63
Verifying the configurations ································································································································· 66
FSPF configuration example·········································································································································· 67
Network requirements··········································································································································· 67
Configuration procedure ······································································································································ 67
Verifying the configurations ································································································································· 69
Configuring FC zones················································································································································71
Overview········································································································································································· 71
Zone database······················································································································································· 71
Distributing zones·················································································································································· 73
Zone merge···························································································································································· 75
Access control························································································································································ 77
FC zone configuration task list ····································································································································· 77
Configuring zone aliases ·············································································································································· 78
Configuring zones·························································································································································· 78
Configuring zone sets···················································································································································· 79
Configuring the default zone policy····························································································································· 79
Configuring zone distribution and merge types ········································································································· 79
Activating a zone set and distributing it to the entire fabric ····················································································· 80
Triggering a complete distribution ······························································································································· 80
Renaming zone aliases, zones, and zone sets··········································································································· 81
Copying zone aliases, zones, and zone sets ············································································································· 81
Deleting the zone database·········································································································································· 82
Displaying and maintaining FC zones ························································································································ 82
FC zone configuration example ··································································································································· 82
Network requirements··········································································································································· 82
Configuration considerations ······························································································································· 83
Configuration procedure ······································································································································ 83
Verifying the configurations ································································································································· 84
Configuring NPV························································································································································86
Overview········································································································································································· 86
Downlink interface and downlink························································································································ 86
Uplink interface and uplink ·································································································································· 86
Downlink-to-uplink interface mappings ··············································································································· 87
Disruptive load balancing ···································································································································· 87
NPV configuration task list ············································································································································ 87
Configuring uplink interfaces and downlink interfaces······························································································ 87
Configuring uplink interfaces ······························································································································· 88
Configuring downlink interfaces·························································································································· 88
Configuring downlink-to-uplink interface mappings··································································································· 88
Initiating a disruptive load-balancing process ············································································································ 89
Displaying and maintaining NPV································································································································· 89
NPV configuration example·········································································································································· 89
Network requirements··········································································································································· 89
Configuration procedure ······································································································································ 90
Verifying the configurations ································································································································· 93
Configuring FC ping··················································································································································95
Overview········································································································································································· 95
Configuration procedure··············································································································································· 95
FC ping configuration example···································································································································· 95
Network requirements··········································································································································· 95
iv
Configuration procedure ······································································································································ 96
Verifying the configurations ································································································································· 97
Configuring FC tracert···············································································································································99
Overview········································································································································································· 99
Configuration procedure·············································································································································100
FC tracert configuration example·······························································································································100
Network requirements·········································································································································100
Configuration procedure ····································································································································100
Appendixes······························································································································································ 105
Appendix A Fabric address assignment····················································································································105
Appendix B Well-known fabric addresses ················································································································105
Support and other resources ·································································································································· 107
Contacting HP ······························································································································································107
Subscription service ············································································································································107
Related information······················································································································································107
Documents····························································································································································107
Websites·······························································································································································107
Conventions ··································································································································································108
Index ········································································································································································ 110
1
FCoE overview
The switch supports FCoE only when operating in advanced mode (the default). For more information
about system operating modes, see Fundamentals Configuration Guide.
HP recommends that you set the delay for the IRF ports to report a link down event as 0 on IRF member
devices connected into a ring topology. For more information, see the irf link-delay command in
Fundamentals Command Reference.
Storage area network
According to the Storage Networking Industry Association dictionary, "a storage area network (SAN) is
any high-performance network whose primary purpose is to enable disk devices to communicate with
computer systems and with each other."
A SAN enables the universal connectivity of servers and disk devices. Compared to the conventional
client/server computer system, a SAN allows the servers to share data and directly access data created
by one another without having to copy it, improves storage scalability, and centralizes the management
of data backup, access, and security.
Most SANs use Fibre Channel (FC) or Ethernet to interconnect devices. An FC SAN uses the FC protocol
suite for communication, and an Ethernet SAN uses the TCP/IP protocol suite for communication.
This document covers only the FC SAN.
FC SAN
As shown in Figure 1, an FC SAN connects the data sending and receiving entities (network servers and
disk devices) with fibers or copper wires in the following ways:
•Directly connects a server and a disk device, as shown in the point-to-point connection.
•Connects servers and disk devices to an FC switched fabric, as shown in the switched fabric. In a
switched fabric, the servers and disk devices are called "nodes." A fabric uses 24-bit addressing
and supports thousands of devices.
2
Figure 1 FC SAN networking
NOTE:
•An FC SAN refers to a network comprising FC switches and nodes.
•A fabric refers to a transmission network comprising FC switches.
FC protocol
The servers, FC switches, and disk devices in an FC SAN must all support FC.
Basic concepts
WWN
The world wide name (WWN) is a 64-bit address that identifies a fabric or an entity (such as an FC
switch, node, or port) in an FC SAN. The upper-layer protocol of FC uses WWNs for communication.
Each entity has a factory-assigned globally unique WWN.
FC address
The FC protocol accesses communication entities in a SAN through FC addresses. An FC address is also
known as an "FC_ID."
Figure 2 shows the structure of an FC address. The FC address is 24 bits long and is divided into these
8-bit fields: Domain_ID, Area_ID, and Port_ID.
•A domain represents an FC switch and all N_Ports connected to the switch. A Domain_ID, which is
in the range of 1 to 239, uniquely identifies an FC switch.
•One or more N_Ports on the same node can be assigned to an area, which is identified by an
Area_ID.
•The Port_ID field identifies an N_Port.
Fabric
Disk
Server
FC switch
Disk
Server
(1) Point-to-point connection (2) Switched fabric
3
Figure 2 Structure of an FC address
A Domain_ID can uniquely identify an FC switch. Different FC switches in the same fabric have different
Domain_IDs.
An FC address can uniquely identify an N_Port on a node. Different N_Ports on the same node have
different FC addresses. FC switches use Domain_IDs to route messages between each other.
The FC protocol standardizes the FC address usage. For more information, see "Appendixes."
Port modes
In a switched fabric, nodes and FC switches communicate through interfaces of different modes.
Figure 3 Port modes
A node has the following port modes:
•N_Port—Directly connects to a fabric.
•NL_Port—Connects to a fabric through an arbitrated loop.
An FC switch provides the following port modes:
•F_Port—Connects to an N_Port or an NP_Port on another FC switch.
•E_Port—Connects to an E_Port on another FC switch.
•NP_Port—Connects to an F_Port on another FC switch. For more information about NP_Port, see
"Configuring NPV."
E_Ports connect FC switches to form a fabric, and F_Ports connect the nodes to FC switches in the fabric.
Communication flow
FC switches provide data transmission services. Through FC switches, a server sends instructions and
data to disk devices and reads data from disk devices.
E_Port E_Port
F_Port
F_Port
F_Port
F_Port
N_Port
N_Port N_Port
N_Port
Server
Disk Disk
Disk
FC switch FC switch
4
Figure 4 FC SAN communication model
The following takes a server accessing a disk device as an example to see how data communication
occurs in an FC SAN.
1. The server and the disk device use the fabric login (FLOGI) protocol to register with the FC switches,
which then assign FC addresses to each directly-connected node.
2. The registered server and disk device send name service registration requests to their respective
access FC switches to register name service information, including their WWNs and FC addresses.
Finally, each FC switch in the fabric stores the name service information for all nodes.
3. To access a disk device, the server needs to send a name service query request to its
directly-connected FC switch to obtain the list of disk devices in the fabric and their WWNs and FC
addresses.
4. After the server obtains the FC address of the disk device, the server can send FC frames (with the
FC address of the disk device as the destination FC address) to the FC switch nearby.
5. When the FC switch receives the FC frame from the server, it queries its FIB table for a data
forwarding path according to the destination FC address, and forwards the FC frame to the
next-hop FC switch. The next-hop FC switch forwards the FC frame in the same way, until the FC
switch at the last hop forwards the FC frame to the destination disk device.
NOTE:
A
FIB table is generated by the FC switch through calculation based on the FC routing protocol or
configured static routes.
VSAN
In actual applications, the data is insecure because the data of all users is transmitted in the same FC
SAN. You can divide one physical FC SAN into multiple Virtual Storage Area Networks (VSANs). In this
manner, VSANs are separated from one another and provide independent services, enhancing
adaptability and security of the network and offering more effective services for users. For more
information about VSAN, see "Configuring VSAN."
FC zone
With VSAN, one physical SAN is divided into multiple logical SANs. A VSAN, however, cannot perform
access control over the servers and disk devices (or the N_Ports) connected to a fabric. N_Ports in the
same VSAN can access one another only if these N_Ports register name services. This creates data
security risks.
5
Zoning can solve the preceding problem by dividing a VSAN into zones and adding N_Ports to different
zones for different purposes. In this manner, N_Ports in different zones are separated to implement
access control.
For more information about FC zones, see "Configuring FC zones."
FCoE
A data center using the FC SAN technology usually comprises separate local area networks (LANs) and
SANs. LANs carry traditional Ethernet/IP services, and SANs carry network storage services.
To provide services for LANs and use SANs for storage simultaneously, the servers must use independent
Ethernet adapters and FC adapters. In addition, the IP switches and the FC switches are also
independent and have independent network connections. Such a network needs many switches,
network adapters, and cables, and it brings high investments and maintenance costs and low scalability.
FCoE was introduced to solve this problem. FCoE is a protocol that carries FC over Ethernet. In an FCoE
solution, the server uses an FCoE-capable Ethernet adapter, and the FCoE switch (FCoE forwarder)
integrates the functions of both the traditional IP switch and FCF switch. FCoE reduces the number of
network adapters, switches, and cables, and the network operation and maintenance workload. In all,
FCoE reduces the total cost.
Figure 5 FCoE for I/O consolidation
As shown in Figure 5, in the traditional network, the server is connected to the LAN through an Ethernet
interface and to the SAN through an FC interface. In the FCoE network, the server is connected to the
FCoE-capable FCF switch, and then the FCF switch is connected to the LAN through an Ethernet interface
and to the SAN through an FC interface. The link between the server and the FCF switch can transmit
both Ethernet frames and FC frames.
Basic concepts
As shown in Figure 6, the links between the FCF switch and the ENode (nodes that can transport FC over
Ethernet, such as servers and disk devices) and between FCF switches can be used for receiving and
sending both Ethernet frames and FC frames.
6
Figure 6 FCoE network diagram
VFC interface and VN interface
A virtual fiber channel (VFC) interface is a logical interface manually created on the FCF switch to
simulate the function of a physical FC interface.
To use a VFC interface, bind it to a physical Ethernet interface.
You can connect either an ENode or an FCF switch to a VFC interface.
VFC interfaces support E mode, F mode (default), and NP mode.
The virtual node (VN) interface is a logical interface on an ENode to simulate the function of a physical
FC interface.
FIP protocol
FCoE initialization protocol (FIP) is an FCoE control protocol that establishes and maintains virtual links.
FIP establishes a virtual link between the VFC interface of an FCF switch and the VN interface of an
ENode or between VFC interfaces of two FCF switches to provide a physical infrastructure for
transmitting FC frames over Ethernet.
FCoE frames
To transmit an FC frame over an Ethernet link, you must encapsulate the FC frame in an FCoE frame by
adding an Ethernet frame header to the FC frame.
An FCoE frame uses Ethernet II encapsulation, which has the following fields in the Ethernet header:
•EtherType 0x8906.
•Destination MAC address/source MAC address—For a switch, it is the FCoE MAC address of the
switch (which can be displayed by using the display fcoe command). For a node, it is the fabric
provided MAC address (FPMA) of the node. As shown in Figure 7, an FPMA is composed of the
FC-MAP as the 24 most significant bits and the FC ID of the VN interface as the 24 least significant
bits. The FC-MAP takes the value of the switch FC-MAP, 0x0EFC00 by default and configurable by
using the fcoe fcmap command.
7
Figure 7 FPMA composition
How FCoE works
Figure 8 Block diagrams of the ENode and the FCF switch
NOTE:
This section describes how FCoE works only on the FCF switch, rather than on the ENode.
Procedure for receiving and sending FC frames over Ethernet
An FC frame is transmitted over Ethernet using the following workflow:
•FIP establishes a virtual link between the VFC interface of the FCF switch and the VN interface of the
ENode or between VFC interfaces of two FCF switches.
•After the virtual link is established, the FCF switch encapsulates the FC frame in an FCoE frame and
sends it out.
•After receiving the FCoE frame, the FCF switch removes its Ethernet header to send the original FC
frame to the upper layer for processing.
How FIP works
FIP sets up and maintains virtual links between a VFC interface and a VN interface or between VFC
interfaces.
Two categories of packets are used in FIP: Discovery Solicitation and Discovery Advertisement. There are
two types of Discovery Advertisement:
•Solicited Discovery Advertisement—A reply for a Discovery Solicitation.
•Unsolicited Discovery Advertisement—Periodically sent to advertise the presence of an FCF switch
or maintain an existing virtual link.
The following example shows how a virtual link is set up between an FCF switch and an ENode.
Virtual link
ENode FCF
VN interface VFC interface
FC layer
Ethernet
layer
Ethernet
interface Ethernet
interface
FC layer
Ethernet
layer
8
Figure 9 FIP operation
As shown in Figure 9, the following workflow is used to set up a virtual link:
1. The ENode sends a Discovery Solicitation containing its FCoE MAC address.
2. After receiving the Discovery Solicitation, the FCF switch acts differently depending on whether the
receiving VFC interface is bound to the FCoE MAC address:
{If it is not bound, the switch learns the FCoE MAC address and replies with a solicited
Discovery Advertisement, whose fcf priority field carries the FCF priority of the VFC interface.
{If it is bound, the switch checks whether the FCoE MAC address matches the bound FCoE MAC
address. If they match, it replies with a solicited Discovery Advertisement, whose fcf priority
field carries the FCF priority of the VFC interface. If they do not match, it discards the Discovery
Solicitation.
3. The FCF switch periodically sends unsolicited Discovery Advertisements, whose fcf priority field
carries the FCF priority of the system. The sending interval is specified by using the fcoe
fka-adv-period command and defaults to 8 seconds.
4. After receiving the Discovery Advertisements, the ENode determines the FCF switch with the
highest priority according to the fcf priority field and sends a FLOGI request frame to that switch
for login.
5. After receiving the FLOGI request frame, the FCF checks whether the source MAC address matches
its learned or bound FCoE MAC address. If they match, it sends a FLOGI LS_ACC, which indicates
the setup of the virtual link. Otherwise, it discards the FLOGI frame.
6. The FCF switch also periodically sends unsolicited Discovery Advertisements to maintain
established virtual links. If the ENode fails to receive an unsolicited Discovery Advertisement within
a period 2.5 times the interval specified by the fcoe fka-adv-period command, it deletes the virtual
link.
FCoE modes
The switch supports the following FCoE modes:
(1) Send Discovery Solicitation
Learn FCoE MAC address
FCF ENode
(2) Send solicited Discovery
Advertisement
(3) Send solicited Discovery
Advertisements periodically
(4) Send FLOGI request
Check FCoE MAC address
(5) Send FLOGI LS_ACC
(6) Send solicited Discovery
Advertisements periodically
9
•FCF mode—A switch operating in this mode is called an FCF switch. Its VFC interfaces support E
mode (E_Port) and F mode (F_Port).
•NPV mode—A switch operating in this mode is called an N_Port Virtualization (NPV) switch. Its
VFC interfaces support F mode (F_Port) and NP mode (NP_Port).
An FCoE-capable switch can operate in the following modes:
•FCF mode—When the switch operates in this mode, it can connect to the E_Port on another FCF
switch through its E_Port, or connect to the N_Port on a node or the NP_Port on an NPV switch
through its F_Port.
•NPV mode—When the switch operates in this mode, it can connect to the N_Port on a node
through its F_Port or to the F_Port on an FCF switch through its NP_Port.
•Non-FCoE mode—When the switch operates in this mode, it is a standard switch and does not
provide any FCoE capabilities.
FCF mode
An FCF switch encapsulates FC frames in Ethernet frames and uses FCoE virtual links to simulate physical
FC links. Therefore, it provides standard FC switching capabilities and features on a lossless Ethernet
network.
Figure 10 FCF network diagram
In an FCoE environment as shown in Figure 10, different from a pure FC network, the ENode and FCF
switch communicate over Ethernet interfaces on a lossless Ethernet network. The FCoE virtual link
between the ENode and FCF switch connects a VN interface to a VFC interface, and the FCoE virtual link
between FCF switches connects two VFC interfaces.
Each FCF switch is assigned a domain ID. Each FC SAN supports a maximum number of 239 domain IDs,
so an FC SAN cannot have more than 239 FCF switches.
NPV mode
An FC SAN needs a large number of edge switches that connect directly to nodes. N_Port Virtualization
(NPV) switches are developed to expand the number of switches in an FC SAN.
10
Figure 11 NPV network diagram
As shown in Figure 11, the NPV switch resides between nodes and the core switch on the edge of the
fabric. The core switch is a switch operating in FCF mode. The NPV switch is connected to the nodes
through its F_Ports and to the core switch through its NP_Port. In this manner, the NPV switch forwards
traffic from its connected nodes to the core switch.
The NPV switch appears as an FCF switch to nodes and as a node to the core switch.
For more information about NPV, see "Configuring NPV."
Protocols and standards
•FC-FS-3, Fibre Channel - Framing and Signaling - 3
•FC-SW-5, Fibre Channel - Switch Fabric - 5
•FC-LS-2, Fibre Channel - Link Services - 2
•FC-GS-6, Fibre Channel - Generic Services - 6
•FC-BB-5, Fibre Channel - Back Bone – 5
11
Configuring an FCoE mode
The switch supports FCoE only when operating in advanced mode. For more information about system
operating modes, see Fundamentals Configuration Guide.
FCoE features supported in different FCoE modes
The switch supports two FCoE modes: FCF mode and NPV mode. Each mode has different features as
shown in Table 1. You can choose to configure different features based on the FCoE mode of a switch.
Table 1 FCoE functions supported in different FCoE modes
FCoE feature FCF mode NPV mode
Configuring VFC interfaces and
FIP Supported Supported
Setting up a fabric Supported Only the following function is supported:
"Configuring the fabric timers."
Configuring VSAN Supported Supported
Configuring FC routing and
forwarding Supported
Only the following functions are supported:
•Displaying FC routing table information
•Displaying FC FIB table information
•Display FC Exchange table information
Configuring FC zones Supported Not supported
Configuring NPV Not supported Supported
Configuring FC ping Supported Not supported
Configuring FC tracert Supported Not supported
Configuration procedure
An FCoE-capable switch can operate in FCF mode, NPV mode, or non-FCoE mode. The switch can only
convert from non-FCoE mode to one FCoE mode, or vice versa, and it cannot convert directly among the
two FCoE modes. To convert among the two FCoE modes, first convert the switch to non-FCoE mode.
After converting the switch to non-FCoE mode, FCoE-related configurations in the original FCoE mode
are cleared.
To configure an FCoE mode for a switch:
Ste
p
Command
Remarks
1. Enter system view. system-view N/A
2. Configure an FCoE mode
for the switch. fcoe-mode { fcf | npv } By default, a switch operates in non-FCoE
mode.
12
Ste
p
Command
Remarks
3. Display the FCoE mode of
the switch. display fcoe-mode This command can be executed in any
view.
13
Configuring VFC interfaces and FIP
VFC interfaces and FIP configuration task list
Tasks at a
g
lance
(Required.) Configuring a VFC interface
(Required.) Enabling FCoE for a VLAN and mapping a VSAN to the VLAN
(Optional.) Configuring the FC-MAP value
(Optional.) Configuring the FKA advertisement period value
(Optional.) Configuring the FCF priority
Configuring a VFC interface
Ste
p
Command
Remarks
1. Enter system view. system-view N/A
2. Create a VFC interface and
enter its view. interface vfc interface-number N/A
3. Configure the VFC interface
mode. fc mode { e| f| np }
By default, a VFC interface operates
in F mode.
•When an FCF switch operates in
FCF mode, VFC interfaces support
E and F modes.
•When an FCF switch operates in
NPV mode, FC interfaces support
F and NP modes.
4. Bind the VFC interface to the
specified Ethernet interface.
bind interface interface-type
interface-number [mac
mac-address ]
By default, no Ethernet interface is
bound to a VFC interface.
The VFC interface sends and receives
packets through the Ethernet interface
bound to it.
5. Assign the VFC interface to
the specified VSAN as a
trunk port.
port trunk vsan vsan-id
By default, a VFC interface is not
assigned to any VSAN as a trunk
port.
You can assign a VFC interface to a
nonexistent VSAN as a trunk port and
then create the VSAN.
6. (Optional.) Configure a
description for the VFC
interface.
description text
By default, the description of an
interface is Interface name Interface,
for example, Vfc1 Interface.
14
Ste
p
Command
Remarks
7. (Optional.) Restore the
default settings for the VFC
interface.
default N/A
8. Bring up the VFC interface. undo shutdown By default, a VFC interface is up.
Enabling FCoE for a VLAN and mapping a VSAN
to the VLAN
When you use a VFC interface to transmit packets, the Ethernet interface bound to the VFC interface can
allow multiple VLANs. You should enable FCoE for a VLAN and map a VSAN to the VLAN, so that the
packets from the VSAN are tagged with the VLAN tag and transmitted within the VLAN.
Configuration restrictions and guidelines
Follow these restrictions and guidelines when you configure this feature:
•FCoE cannot be enabled for VLAN 1.
•VSANs are mapped to VLANs on a one-to-one basis.
•You must enable FCoE for the same VLAN and map this VLAN to the same VSAN on the two ends.
•Make sure the Ethernet interface bound to the VFC interface allows the FCoE-capable VLAN.
After you enable FCoE for a VLAN, the following changes apply to the VLAN:
•An FCoE-capable VLAN allows only FCoE traffic.
•All member ports in an FCoE-capable VLAN are isolated at Layer 2 to avoid loops. For this reason,
STP and other loop detection protocols do not need to run in an FCoE-capable VLAN. Otherwise,
FCoE links might be blocked.
•Because all member ports in an FCoE-capable VLAN are isolated, a Layer 2 protocol enabled in
the FCoE-capable VLAN runs based on the port isolation topology.
Configuration procedure
To enable FCoE for the specified VLAN and map this VLAN to the specified VSAN:
Ste
p
Command
Remarks
1. Enter system view. system-view N/A
2. Enter VLAN view. vlan vlan-id N/A
3. Enable FCoE for the specified
VLAN and map this VLAN to the
specified VSAN.
fcoe enable [ vsan
vsan-id ]
By default, FCoE for a VLAN is disabled.
Make sure that the VSAN to be mapped
has been created.
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