Enterasys mrxi-22 User Guide

•

Network management has disabled the port. 

•

The port is segmented either because the collision detector was on 
for more than 110 

µ

sec or the MRXI detected more than 30 

consecutive collisions on the attached segment. The affected port 
remains segmented until a good packet is transmitted/received 
without collisions.

If the LNK LED is still not lit, contact Cabletron Systems Technical 
Support.

You can test the Ethernet segments connected to the MRXI to determine 
if they comply with IEEE 802.3 specifications. To do this, use two 
Ethernet node testers, such as Cabletron Systems LAN-MD

™

 attached in 

place of the Ethernet devices normally attached on any two links. Figure 
4-1 shows several methods for connecting the LAN-MD to test different 
media types and links connected to the MRXI. The LAN-MDs exchange 
valid data packets for end-to-end testing.

To test any single link; select two links (the link you want to test and a 
second link that you know operates properly), and perform the following 
steps:

Note: The flexibility of the MRXI permits a variety of media combinations, 
resulting in many possible test configurations. Since it is impossible to 
cover every combination of network media and MRXI configuration, minor 
adjustments to the testing procedures given here may be necessary to 
test your specific configuration.

1. Connect two LAN-MDs, one at the end of each of the Ethernet links 

your are testing. If you connect one or both of the LAN-MDs to a 
segment that is attached to: