Chapter 4 Troubleshooting and Diagnostics

IPmux-1/1EInstallation and Operation Manual

 

 

 

 

 

Table 4-4. 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

 

 

 

 

 

 

 

 

Correct Frames

The number of frames successfully received. When a valid connection is established the number should increase steadily.

 

 

 

 

Correct Octets

The number of octets successfully received. When a valid connection is established the number should increase steadily.

 

 

 

Alignment

The number of frames received that are not an integral number of octets in length (RFC 1643). All frames should end on an 8-bit boundary, but physical

Errors

problems on the network could cause the number of bits to deviate from the multiple of eight.

 

Recommendations:

 

 

 

 

Check physical connections, devices and configuration.

 

 

 

FCS Errors

Counts the number of frames received that do not pass the FCS check (RFC 1643). An FCS check is a mathematical way to ensure that all the frame bits are

 

correct without the system having to examine each bit and compare it against the original.

Recommendations:

Check for physical problem such as hardware problem, or a bad line, or noisy environment.

4-14 Performance Monitoring and Troubleshooting Statistics

Page 111
Image 111
Cisco Systems IPMUX-1E operation manual LAN Statistics Parameters, Parameter Description