Cisco Systems OL-4580-01 manual 8describes the fields in the show mibii command output

Chapter 1 Configuring Interfaces and Circuits

Configuring Interfaces

Table 1-8describes the fields in the show mibii command output.

Table 1-8 Field Descriptions for the show mibii Command

Field	Description
MAC	The interface address at the protocol layer immediately
	below the network layer in the protocol stack. For interfaces
	that do not have such an address (for example, a serial line),
	this object contains an octet string of zero length.
Administrative	The desired state of the interface (Enabled, Disabled, or
	Testing). The testing state indicates no operational packets
	can be passed.
MTU	The size of the largest datagram that can be sent or received
	on the interface, specified in octets. For interfaces that are
	used for transmitting network datagrams, this is the size of
	the largest network datagram that can be sent on the interface.
In Octets	The total number of octets received on the interface,
	including framing characters.
In Unicast	The number of subnetwork-unicast packets delivered to a
	higher-layer protocol.
In Multicast	The number of non-unicast (for example,
	subnetwork-broadcast or subnetwork-multicast) packets
	delivered to a higher-layer protocol.
In Errors	The number of inbound packets that contained errors
	preventing them from being delivered to a higher-layer
	protocol.
In Discards	The number of inbound packets that were chosen to be
	discarded even though no errors had been detected to prevent
	their being delivered to a higher-layer protocol. One possible
	reason for discarding such a packet could be to free up buffer
	space.
In Unknown	The number of packets received over the interface that were
	discarded because of an unknown or unsupported protocol.

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OL-4580-01		1-25