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单选题

VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?()

发布日期:2021-10-08

VLAN Tagging, also known as Frame Tagging, is a me...
A

provide service internetworking

B

support transparency for Layer 2 frames

C

indicate destination as a connection identifier

D

map to the DLCI in service internetworking

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