Cisco Systems IPMUX-1E operation manual Check the network interface card

Chapter 4 Troubleshooting and Diagnostics IPmux-1/1EInstallation and Operation Manual

			Table 4-5. LAN Statistics Parameters
Parameter	Description
MAC Address	MAC address	of the local port.
Mode	Port mode is set either manually or via the auto-negotiation mode (under LAN configuration screen).
	Note: When auto-negotiation protocols do not support each other, this will degrade the connection to a half-duplex mode.
	In order to avoid this, auto-negotiation should be disabled and the ports should be configured/forced manually. Half-duplex degradation will occur also when
	auto-negotiation is enabled at one port and disabled at the opposite port.
Rate (Mbps)	Port rate is set either manually or via the auto negotiation mode.
Status	Link status:	Connected = Normal operation.
		Not connected = Ethernet Link loss
Frames Received
Total Frames	The total number of correct frames received. When a valid connection is established the number should increase steadily.
Total Octets	The total number of octets (bytes) received. When a valid connection is established the number should increase steadily.
Oversize	Number of frames exceeding the maximum allowed frame size, but are otherwise valid Ethernet frames (good CRC).
Frames
Fragments	The number of frames that are shorter than 64 bytes and have an invalid CRC.
Jabber	The number of frames that are too long and have an invalid CRC.
	A jabber is transmission by a data station beyond the time interval allowed by the protocol, usually affecting the rest of the network. In an Ethernet network,
	devices compete for use of the line, attempting to send a signal and then retrying in the event that someone else tried at the same time. A jabber can look like
	a device that is always sending, effectively bringing the network to a halt.
	Recommendations
	Check network interface card or any other transmitting devices and external electrical interference.
Dropped	Number of dropped frames due to delivery problems.
Frames	Recommendations:
	Check the network interface card.
CRC Errors	The amount of frames with invalid CRCs.

4-18 Performance Monitoring and Troubleshooting Statistics