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HPE0-Y53 · Question #111

Refer to the exhibits. Exhibit 1. All links shown in Exhibit 1 are 10Gbps links that run TRILL. Unicast TRILL traffic between servers connected to Switch 1 and servers connected to Switch 2 only…

The correct answer is D. Configure the switch to calculate at least four TRILL trees. In a TRILL network, RBs compute distribution trees according to the LSDB, and use the distribution trees to guide the forwarding of multicast, broadcast, and unknown unicast frames. An LSP carries distribution tree information that includes the number of distribution trees that…

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Question

Refer to the exhibits. Exhibit 1. All links shown in Exhibit 1 are 10Gbps links that run TRILL. Unicast TRILL traffic between servers connected to Switch 1 and servers connected to Switch 2 only pass over two of the uplinks on Switch 1. How can the network administrator help resolve the problem?

Exhibits

HPE0-Y53 question #111 exhibit 1
HPE0-Y53 question #111 exhibit 2
HPE0-Y53 question #111 exhibit 3

Options

  • AEnable the load balancing feature in the TRILL configuration view.
  • BEnsure that Switch4, Switch 5, Switch 6, and Switch 7 all have the same tree root priority.
  • CEnsure that the global maximum number of ECMP paths is at least four.
  • DConfigure the switch to calculate at least four TRILL trees.

How the community answered

(29 responses)
  • A
    17% (5)
  • B
    7% (2)
  • C
    3% (1)
  • D
    72% (21)

Explanation

In a TRILL network, RBs compute distribution trees according to the LSDB, and use the distribution trees to guide the forwarding of multicast, broadcast, and unknown unicast frames. An LSP carries distribution tree information that includes the number of distribution trees that the RB wants all RBs to compute, the maximum number of distribution trees that the RB can compute (this number is fixed at 15), and the number of distribution trees that the RB has computed. You configure the number of distribution trees that the RB wants all RBs to compute with the trees calculate count command. Here it is set to 2. We should change it to four. cId=emr_na-c03655102

Topics

#TRILL#ECMP#multipath#tree calculation

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