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(Radio) When the 0LT global or VLAN service template enables the PITP switch, the service port allows the upstream packet to be carried, the Vendor tag switch, and the user to carry the vendor upstream packet In the case of tarf information, the following statement regarding olts to PITP message processing strategies is correct
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The number of users under the OLT can also determine whether the VLA is single-layer or dual-layer VL
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(Single choice) The following statement about defense MAC Spoofing is wrong
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Layer 2 enables IGMP-snooping , and when the switch port receives an IGMP join packet, it listens for the packet and adds the corresponding port to the multicast group
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