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Creating and Managing Fabric Profiles

 

A Fabric profile contains configuration settings for a gateway Fibre Channel (FC) fabric. A gateway FC fabric creates associations that connect Fibre Channel over Ethernet (FCoE) devices with converged network adapters (CNAs) on the Ethernet network to an FC switch on the Fibre Channel network. You can assign Fabric profiles to QFX Series devices that act as a FCoE-FC gateway, to configure gateway FC fabrics.

To manage or create FC Gateway Service profiles: In Build mode, select Wired > System > Fabric in the Tasks pane. The FC Gateway Service Profile page appears.

This topic describes:

Managing Fabric Profiles

From the Manage Fabric Profiles page, you can:

  • Create a new profile by clicking Add.

  • Modify an existing profile by selecting it and clicking Edit.

  • Associate a profile to specific interfaces by selecting it and clicking Assign.

    During the assignment process, you will have the option to configure interface-specific settings.

  • Change a profile’s current interface assignments by selecting it and clicking Edit Assignments.

  • View information about a profile by selecting the group and clicking Details or by clicking the profile name.

  • Clone a profile by selecting a profile and clicking Clone.

  • Delete profiles by selecting the profile and clicking Delete.

    Tip

    You cannot delete profiles that are in use—that is, assigned to objects or used by other profiles. To see the current assignments for a profile, select the profile and click Details.

Table 1 describes the information provided about Fabric profiles on the Manage Fabric Profiles page. This page lists all Fabric profiles defined for your network, regardless of your current selected scope in the network view.

Table 1: Fabric Profile Information

Field

Description

Fabric Name

Name given to the profile when it was created.

Fabric ID

Number from 1 through 4094 assigned to the Fabric profile when it was created.

Device Family

Device family to which the profile applies.

Description

Any description added when the profile was created.

Assignment State

One of the following:

  • Deployed—The profile has been assigned to interfaces and the configuration has been deployed on the devices.

  • Pending Deployment—The profile has been assigned to interfaces or its previous assignments have been changed, but the new or modified configuration has not yet been deployed on the devices.

  • Unassigned—The profile has not yet been assigned to interfaces.

Creation Time

Date and time when this profile was created.

Last Updated Time

Date and time when this profile was last modified.

Username

The username of the user who created or modified the profile.

Tip

All columns might not be displayed. To show or hide fields in the table, click the down arrow on the field header, select Columns, and select or clear the check box adjacent to the field that you want to show or hide.

Creating Fabric Profiles

To create a Fabric profile:

  1. From the Network Director Banner, select Build mode.
  2. In the Tasks pane, select Wired > System > Fabric.

    The Manage Fabric profiles page appears.

  3. Click Add.

    The Create Fabric Profile page appears.

  4. Enter settings for the Fabric profile as described in Specifying Settings for a Fabric profile.
  5. Click Done.

Specifying Settings for a Fabric profile

Use the Create Fabric profile page to define a common set of attributes in a Fabric profile, which you can then apply to Fibre Channel (FC) interfaces on Data Center Switching devices.

Tip

You can reference VLAN profiles in a Fabric profile. Create these profiles before you create Fabric profiles.

After you create a Fabric profile, you can assign it to devices, individual interfaces, or port groups. During this process, you can also configure interface-specific attributes. You can assign only one Fabric profile to an interface or port group.

Table 2 describes the Fabric profile settings. Mandatory settings are indicated by a red asterisk (*) that appears next to the field label in the user interface.

Table 2: Fabric Profile Settings

Field

Action

Fabric Name

Type a name for the profile.

The value must be a string between 2 and 64 characters long, begin with a letter, and consist of letters, numbers, periods, dashes, and underscores only.

Fabric ID (1-4094)

Type an ID number from 1 through 4094.

Description

Type a description of the Fabric profile, which will appear on the Manage Fabric Profiles page.

Max Login Sessions

(128-2500)

Set the maximum number of FCoE initialization protocol (FIP) session logins permitted for the FCoE-FC gateway fabric.

The range is 128 through 2500. The default is 2500.

VLAN Profiles

Add

Click Add to select FCoE VLAN profiles to assign to the Fabric profile. Select the VLAN profiles from the list, then click OK.

Remove

To remove VLAN profiles, select one or more profiles, then click Remove.

Proxy Settings

Load Balance Algorithm

Set the load-balancing algorithm that the QFX Series uses to distribute FCoE sessions (FLOGI and FDISC sessions from the FCoE devices in the Ethernet network) among the NP_Port links to the FC switch.

Note: Changing the load-balancing algorithm when FCoE sessions are running forces the FCoE sessions to log out, and then log in again.

Select one of the following:

  • simple—Load balancing is based on the weighted utilization (load) of the NP_Ports connected to an FC fabric. Each new FLOGI or FDISC is assigned to the least-loaded link. When a link load rebalance occurs, the system minimizes disruption by using an algorithm to log out only the sessions that need to be moved to other links to balance the link load. To further minimize disruption, the algorithm logs out the sessions with the fewest dependencies (for example, FDISC sessions are logged out before FLOGI sessions). When the sessions log in again, they are placed on NP_Port interfaces in a manner that balances the link loads. This is the default load-balancing algorithm.

  • enode-based—Load balancing is based on the ENode FLOGI. When an ENode logs in to the fabric, all subsequent FDISC sessions (VN_Port sessions) associated with that ENode are placed on the same link as the ENode FLOGI session, regardless of the link load. New ENode FLOGIs are placed on the least-loaded link. When a link load rebalance occurs, the system logs off all sessions. The sessions log in again and are placed on NP_Port interfaces in a balanced manner.

  • flogi-based—FLOGI-based load balancing is similar to ENode-based load balancing, but the behavior when the loads are rebalanced is different. Load balancing is based on the ENode FLOGI. When an ENode logs in to the fabric, all subsequent FDISC sessions associated with that ENode are placed on the same link as the ENode FLOGI session, regardless of the link load. New ENode FLOGIs are placed on the least-loaded link. When a link load rebalance occurs, the system minimizes disruption by using an algorithm to log out only the sessions that need to be moved to other links to balance the link load. When the logged out sessions log back in, they are placed on NP_Port interfaces in a manner that balances the link loads.

Disable Worldwide Name Verification

(default is disabled)

Select to Disable the fabric worldwide name (WWN) verification check in the fabric login accept message (FLOGI-ACC) for implicit FLOGIs.

If you enable this option, when a QFX Series NP_Port performs a FLOGI to the FC fabric, the QFX Series does not verify the fabric WWN in the FLOGI-ACC against the current fabric WWN.

Note: Disabling or enabling the fabric WWN verification check logs out all FCoE sessions.

FIP Settings

FCoE Trusted

(default is disabled)

Select to enable the specified 10-Gigabit Ethernet interface to trust Fibre Channel over Ethernet (FCoE) traffic. If an interface is connected to another switch such as an FCoE forwarder (FCF) or a transit switch, you can configure the interface as trusted so that the interface forwards FCoE traffic from the switch to the FCoE devices without installing FIP snooping filters.

Configure the specified local Fibre Channel fabric to trust FCoE traffic on all ports in the fabric. Changing the fabric ports from untrusted to trusted removes any existing FIP snooping filters from the ports. Changing the fabric ports from trusted to untrusted by removing the fcoe-trusted configuration from the fabric forces all of the FCoE sessions on those ports to log out so that when the ENodes and VN_Ports log in again, the switch can build the appropriate FIP snooping filters.

FCoE Mapped Address

Set the FCoE mapped address prefix (FC-MAP) value for the FCoE VLAN to match the FC switch (or FCoE forwarder) FC-MAP value for the FC fabric. The FC-MAP value is a unique MAC address prefix an FC switch uses to identify FCoE traffic for a given FC fabric (traffic on a particular FCoE VLAN).

Enter an FC-MAP value, which is a hexadecimal value preceded by “0x”. The range is 0x0EFC00 through 0x0EFCFF. The default value is 0xEFC00.

You can configure the FC-MAP value or use the default value. The FC switch provides the FC-MAP value to FCoE nodes (ENodes) in the FIP discovery advertisement message. If the EX Series switch or the QFX Series FCoE VLAN FC-MAP value does not match the FC switch FC-MAP value, neither device discovers the FC switch on that VLAN, and the ENodes on that VLAN cannot access the FC switch. The FC switch accepts only FCoE traffic that uses the correct FC-MAP value as part of the VN_Port MAC address.

When the QFX Series acts as an FCoE-FC gateway, the FC-MAP value for the gateway and the FCoE devices must match the FC switch FC-MAP value in order to communicate with the FC switch.

Note: Changing the FC-MAP value causes all logins to drop and forces the ENodes to log in again.

Keep Alive Interval

(default is 8000)

Set the global interval between periodic FIP keepalive advertisements, in milliseconds. The range is 250 through 90000 milliseconds. The default is 8000 milliseconds.

Priority

(default is 128)

Set the global priority value associated with the switch FCF-MAC. CNAs use the priority value to determine the switch with which they will perform FIP FLOGI. The lower the value, the higher the priority. The switch advertises this value to the server ENodes on the FCoE network.

The range is 0 through 255. The default value is 128.

Max Sessions Per Node

Set the maximum number of FCoE login sessions (FLOGI plus FDISC) from a single ENode allowed on the gateway FC fabric (the fabric configured on the QFabric system). The maximum number of logins per ENode is 2000 sessions.

Note: A session is a FLOGI or FDISC login to the FC SAN fabric. Session does not refer to end-to-end storage sessions. There is no limit to the number of end-to-end storage sessions.

What to Do Next

Once the Fabric profile is created, you must assign the profile using the Assign Device Profile page to the required devices and then deploy the device configuration changes using the Deploy mode. To assign a Fabric profile, see Assigning a Fabric Profile to Devices and Ports. For information about deploying your configurations, see Deploying Configuration to Devices.