Network bridges support the following Layer 2 links: Ethernet, Multilink PPP (MP), Point-to-Point Protocol (PPP), frame relay (FR), Asynchronous Transfer Mode (ATM), Point-to-Point Protocol over Ethernet (PPPoE), Point-to-Point Protocol over FR (PPPoFR), Point-to-Point Protocol over Ethernet over ATM (PPPoEoA), and High-Level Data Link Control (HDLC) links.
1.Auto-Negotiation:support port traffic control (FE port not supportable)
2、Not Auto-Negotiation:support port traffic control (cooperate EFF8 card ,not support
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