Mot thac mac nho khi thiet lap VLAN(ISL hoặc Dot1Q)

ICND đòi hỏi phải xác định được phương thức trunking dùng trên các interface ethernet. Cisco hỗ trợ các phương thức trunking như sau:
■ InterSwitch Link (ISL) - Ethernet
■ IEEE’s 802.1Q (Dot1Q) - Ethernet
■ LANE - ATM
■ 802.10 - FDDI

Như vậy, nếu giữa 2 switch có trunking qua interface fastethernet thì phải dùng ISL hoặc Dot1Q.

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