H3C GB0-371-ENU Value Pack (Frequently Bought Together)

Regarding the spanning tree port overhead configuration of H3C switches, the following statements are correct:

• A. H3C switches support three port cost standards, dot1d-1998, dot11, and legacy. The port cost standards to be followed can be switched through the command stp pathcost-standard
• B. The default spanning tree port cost standard for H3C switches is legacy
• C. By default, the larger the port cost, the smaller the port bandwidth
• D. If switches of different manufacturers are interconnected, each switch should be configured to follow the same port cost standard as much as possible, otherwise it may cause the spanning tree calculation result to deviate from the original intention of the network design

In the PIM-DM networking, regarding the process of SPT formation (without considering the state refresh mechanism), the correct description is:

• A. The pruned interface no longer sends multicast packets downstream
• B. As long as the network topology and unicast routing information remain unchanged, the formed SPT tree will not change
• C. The diffusion-pruning process is carried out periodically
• D. After the process of flooding and pruning, an SPT between the multicast source and the multicast receiver is formed

Which of the following statements about multicast VLAN is correct is

• A. The VLAN that the host belongs to needs to be configured as a sub-VLAN of the multicast VLAN
• B. Multicast VLAN not only saves bandwidth, but also reduces the burden on Layer 3 devices
• C. Multicast VLAN needs to enable IGMP-Snooping function
• D. The sub-VLANs of the multicast VLAN must also enable the IGMP-Snooping function

The figure shows the networking application of RRPP. Customer LAN switches SWA, SWB, SWC, and SWD form RRPP ring main ring 1, switches SWB, SWC and SWE form sub-ring 2, and switches SWB, sWC and sWF form sub-ring 3. If Switch SWE is the master node of sub-ring 2, SWF is the master node of sub-ring 3, and switch SWB is the edge node of sub-ring 2 and sub-ring 3. In order to eliminate the defect of broadcast storm under specific conditions of RRPP dual-homing networking, the above information Can know

• A. If the link between the switch SWA and the switch SWD is Down, the edge port on the switch SWB will be blocked
• B. If the link between the switch SWA and the switch SWB is Down, and the link between the switch SWB and SWC is Down, the edge port on the switch SWB will be blocked
• C. If the link between switch SWA and switch SWB is Down, and the link between switch SWA and switch SWD is Down, the edge port on switch SWB will be blocked
• D. If the link between the switch SWB and the switch SWC is Down, the edge port on the switch SWB will be blocked

As shown in the picture, SWA, SWB and SWC enable STP, and the MAC address of SWB is less than the MAC address of SWA. If the topology converges and the bridge priority of SWB is set to 0, the following statements are correct.

• A. The topology will re-converge after 30 seconds by default
• B. SWA will immediately determine that port E0/1 is the root port
• C. After SWC receives the configuration BPDU sent by SWB, it will not update immediately, but will wait for the locally saved configuration BPDU to age before updating
• D. After the priority is adjusted, SWB will immediately send configuration BPDUs with itself as the root from ports E0/1 and E0/2