HP Cisco Nexus 5000 Cisco Nexus 5000 Series Switch CLI Software Configuration - Page 509

Configuring Fibre Channel Interfaces E Port Note Interfaces are automatically assigned VSAN 1 by default. Each interface has an associated administrative configuration and an operational status: • The administrative configuration does not change unless you modify it. This configuration has various attributes that you can configure in administrative mode. • The operational status represents the current status of a specified attribute such as the interface speed. This status cannot be changed and is read-only. Some values may not be valid when the interface is down (for example, the operational speed). E Port F Port NP Port TE Port Related Topics • Configuring and Managing VSANs, page 531 • Configuring N Port Virtualization, page 497 In expansion port (E port) mode, an interface functions as a fabric expansion port. This port may be connected to another E port to create an Inter-Switch Link (ISL) between two switches. E ports carry frames between switches for configuration and fabric management. They serve as a conduit between switches for frames destined to remote N ports. E ports support class 3 and class F service. An E port connected to another switch may also be configured to form a SAN port channel. Related Topics • Configuring SAN Port Channel, page 515 In fabric port (F port) mode, an interface functions as a fabric port. This port may be connected to a peripheral device (host or disk) operating as a node port (N port). An F port can be attached to only one N port. F ports support class 3 service. When the switch is operating in NPV mode, the interfaces that connect the switch to the core network switch are configured as NP ports. NP ports operate like N ports that function as proxies for multiple physical N ports. Related Topics • Configuring N Port Virtualization, page 497 In trunking E port (TE port) mode, an interface functions as a trunking expansion port. It may be connected to another TE port to create an extended ISL (EISL) between two switches. TE ports connect to another Cisco Nexus 5000 Series switch or a Cisco MDS 9000 Family switch. They expand the functionality of E ports to support the following: • VSAN trunking • Fibre Channel trace (fctrace) feature In TE port mode, all frames are transmitted in EISL frame format, which contains VSAN information. Interconnected switches use the VSAN ID to multiplex traffic from one or more VSANs across the same physical link. This feature is referred to as VSAN trunking in the Cisco Nexus 5000 Series switch. TE ports support class 3 and class F service. OL-16597-01 Cisco Nexus 5000 Series Switch CLI Software Configuration Guide 463