Brocade Web Tools Administrator's Guide - Supporting Fabric OS v7.0.0 (53-1002152-01, March 2012)

Web Tools Adminstrator’s Guide 81
53-1002152-01
Configuring FC ports
6
E_Port The port can be used to connect to another switch. On the Brocade FC8-64,
ports 56 through 63 are not available as E_Ports. This option is unavailable
for these ports.
U_Port For a physical FC port: the port can be any one of E_Port, F_Port, or L_Port.
For a logical FC port: the port can be either VE_Port or VEX_Port.
When the wizard prompts you to select allowed port types, if all of these boxes are selected, there
are no constraints on port type. The port negotiated to its preferred type when the switch comes
up, depending on what type of device or switch to which it is connected.
Clearing a check box guarantees that the port does not attempt to function as a port of the
unchecked type. At least one type must remain selected. An FC port cannot be configured as an
E_Port and L_Port.
L_Ports are not supported on the Brocade FC16-32, Brocade FC16-48, or Brocade 6510.
NOTE
To configure a port as an EX_Port, the switch must be capable of supporting FCR or FCIP features.
The EX_Port option is disabled in the wizard if the switch does not meet these requirements.
Long distance mode
Port long distance configurations can be performed in the Switch Admin Extended Fabric tab if the
link is used over long distances. To configure the long-distance settings, the EGM license must be
enabled on the switch. Otherwise, access to this feature is denied and an error message displays.
For information about long-distance mode settings, refer to Chapter 14, “Administering Extended
Fabrics”.
The EGM license is required only for 8 Gbps platforms, such as the following:
• Encryption Switch
• 300, 5300, and 5100 switches
• Brocade VA-40FC
• Brocade 8000
• Brocade 7800
For non-8 Gbps platforms, all functionality is available without EGM license.
Ingress rate limit
Ingress rate limiting is a licensed feature that requires the Adaptive Networking license. Ingress
rate limiting restricts the speed of traffic from a particular device to the switch port, allowing
latency-sensitive applications to share the storage resources alongside throughput-intensive
applications. Ingress rate limiting delays the return of BB credits to the external device. By limiting
the throughput on the ingress side of a port, existing congestion can be removed or avoided.
The implication is as following:
• Ingress rate limiting is not supported if the F_Port is in AOQ.
• Ingress rate limiting is not supported if the F_Port is part of Trunk.
• Ingress rate limiting is not supported if the F_Port is not QoS enabled, but it connects to a QoS
enabled AG switch port.