cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1168
Views
0
Helpful
1
Replies

LMP Clarification

Hello Community,

Please guide as to which is the best option for this question. I lean towards (III) as explained below but on another group I belong, some people also belive strongly that (IV) should be the answer 

Which action is performed by Link Management Protocol in a Cisco StackWise Virtual domain?

  • I. It determines which switch becomes active or standby.
  • II. It determines if the hardware is compatible to form the StackWise Virtual domain.
  • III. It rejects any unidirectional link traffic forwarding
  • IV. It discovers the StackWise domain and brings up SVL interfaces.

Link Management Protocol (LMP) performs the following functions:
• Verifies link integrity by establishing bidirectional traffic forwarding, and rejects any unidirectional links
• Exchanges periodic hellos to monitor and maintain the health of the links
• Negotiates the version of StackWise Virtual header between the switchesThe Link Management Protocol (LMP) is activated on each link of the StackWise Virtual link as soon as it is brought up online. 

1 Reply 1

Netmart
Level 3
Level 3

Hello:

III. is the correct one.

See:

The Link Management Protocol (LMP) is activated on each link of the StackWise Virtual links as soon as the links are established. LMP ensure the integrity of SVL links and monitors and maintains the health of the links. The redundancy role of each switch is resolved by the StackWise Discovery Protocol (SDP). It ensures that the hardware and software versions are compatible to form the SVL and determines which switch becomes active or standby from a control plane perspective.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-10/configuration_guide/ha/b_1610_ha_9400_cg/m9-1610-stackwise-virtual-cg.html