SG0-001 · Question #512
Which of the following port combinations is correct for a link between an FC router and a switch?
The correct answer is C. Router port is E and the switch port is EX. For a Fibre Channel link between an FC router and a switch, the router port is configured as an E-port and the switch port as an EX-port.
Question
Which of the following port combinations is correct for a link between an FC router and a switch?
Options
- ARouter port is EX and the switch port is EX
- BRouter port is EX and the switch port is E
- CRouter port is E and the switch port is EX
- DRouter port is E and the switch port is E
How the community answered
(56 responses)- A4% (2)
- C95% (53)
- D2% (1)
Why each option
For a Fibre Channel link between an FC router and a switch, the router port is configured as an E-port and the switch port as an EX-port.
Connecting an EX port to another EX port is not a standard or functional configuration for an FC router-switch link.
A router typically uses an E-port, not an EX port, to connect to a switch, and a switch uses an EX-port, not an E-port, to connect to a router.
A Fibre Channel router uses an E-port (Expansion Port) to connect to a Fibre Channel switch's EX-port (Expansion via Router Port). The EX-port on the switch is specifically designed to handle routing table information exchanged with the router's E-port, facilitating inter-fabric routing.
Connecting an E port to an E port creates an Inter-Switch Link (ISL) between two Fibre Channel switches, not between a router and a switch.
Concept tested: Fibre Channel port types (E-Port, EX-Port)
Source: https://www.cisco.com/c/en/us/td/docs/storage/san_switches/mds9000/sw/rel_3_x/configuration/guide/cli_3_0/x_fab.html
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