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New Member

MAC address for Serial Interface

Does a mac address for serial interface exist? If so, how can i look for it in a router?

I believe Serial operates at the Layer 2.

2 REPLIES

Re: MAC address for Serial Interface

Hi, J_Vansen_S

Only 802.3 frame uses MAC address; and a serial port is typically encaped by hdlc, ppp or frame-relay. All these types of frames don't use MAC address. So, you won't see the MAC address on a serial port.

HTH

SSLIN

New Member

Re: MAC address for Serial Interface

Hi,

Only LAN interfaces like ethernet, FDDI interfaces uses MAC address.

Serial interfaces don't use MAC address, since its directly connected to the peer.

In HDLC-like serial interfaces, the Address field is a single octet, which contains the binary sequence 11111111.

For more information,

read RFC 1661- The Point-to-Point Protocol

Thanks,

Vijaybabu

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