SG0-001 · Question #505
Which of the following is the purpose of ISL?
The correct answer is D. To expand the FC fabric. ISL, or Inter-Switch Link, is a proprietary Cisco protocol used in Fibre Channel (FC) networks to connect multiple Fibre Channel switches.
Question
Which of the following is the purpose of ISL?
Options
- ATo increase the performance of the HBAs
- BTo expand the iSCSI fabric
- CTo expand the Ethernet network
- DTo expand the FC fabric
How the community answered
(36 responses)- A3% (1)
- B3% (1)
- C6% (2)
- D89% (32)
Why each option
ISL, or Inter-Switch Link, is a proprietary Cisco protocol used in Fibre Channel (FC) networks to connect multiple Fibre Channel switches.
ISL does not directly increase the performance of Host Bus Adapters (HBAs); its function is to link switches within a fabric.
ISL is a concept specific to Fibre Channel fabrics, not iSCSI fabrics, which utilize standard Ethernet infrastructure.
ISL is a Fibre Channel protocol and is not used to expand standard Ethernet networks for general data traffic.
ISL (Inter-Switch Link) is a Fibre Channel networking concept that allows two Fibre Channel switches to be connected, enabling communication and expansion of the Fibre Channel fabric across multiple switches. This creates a larger, more resilient Storage Area Network (SAN) that can connect more servers and storage devices.
Concept tested: Fibre Channel ISL purpose
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_x/configuration/guides/san_config/fm_san_config_6_2/fmsanfabric.html
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