Which action is performed by Link Management Protocol in a Cisco StackWise Virtual domain?
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A. B. C. D.C.
Link Management Protocol (LMP) is used in Cisco StackWise Virtual (SV) technology to facilitate the communication and management of the virtual switches in the domain. LMP is responsible for discovering the StackWise domain and bringing up the SVL (StackWise Virtual Link) interfaces between the switches.
Answer D is correct, as LMP performs the following actions in a Cisco StackWise Virtual domain:
Discover the StackWise domain: When a switch is powered on or a new switch is added to the domain, LMP is responsible for discovering the other switches in the domain.
Bring up SVL interfaces: Once the switches in the domain are discovered, LMP brings up the SVL interfaces between the switches. These interfaces are used for communication between the switches in the virtual domain.
Monitor link health: LMP monitors the health of the SVL interfaces and detects any issues that may arise, such as link failures or unidirectional link traffic forwarding.
Manage switch roles: LMP plays a critical role in managing the roles of the switches in the virtual domain. It determines which switch becomes the active switch and which switches become standby switches. LMP also monitors the health of the active switch and can trigger a failover to a standby switch if the active switch fails.
Answer A is incorrect, as while LMP does manage switch roles, it does not determine which switch becomes active or standby. This decision is made by the Cisco StackWise Virtual Link Management System (VLMS).
Answer B is also incorrect, as LMP does not determine if the hardware is compatible to form the StackWise Virtual domain. This task is handled by the Cisco StackWise Virtual Link Management System (VLMS) during the virtual domain creation process.
Answer C is also incorrect, as LMP does not reject any unidirectional link traffic forwarding. This task is handled by the SVL interface hardware, which is designed to detect and prevent unidirectional link traffic forwarding.