User guide

10
The Canopy T1/E1 Multiplexer User Guide, September 2004, section 2.4.5 correctly
states the command line Ethernet configuration entry should be:
Canopy port auto-negotiation is: on
In section 2.5.5 for the GUI configuration of Ethernet, the same manual correctly states:
Follow these steps to configure the Ethernet ports using the T1/E1 GUI Application
1. From the Main Menu, select the pull-down menu Config→Ethernet. RESULT:
The Ethernet Configuration dialogue box opens.
2. Indicate the appropriate choices by clicking on the appropriate radio buttons.
NOTE: If you select Auto Negotiation Off, the Ethernet port will be forced to 100
Mbps full duplex.
3. When the Ethernet configuration is complete, click OK.
This GUI configuration is shown in Figure 5
“The Ethernet physical layer auto-negotiation must be explicitly set to ‘on’ in the TMUX
configuration setting, and explicitly ‘100 Base T Full Duplex’ only in the Canopy unit. If
this is not done the TMUX and Canopy BH unit will not properly communicate and will
produce unacceptable circuit emulation.”
Setting the Canopy unit to 100 Mbps Full Duplex mode is done by unchecking the three
other Ethernet “Link Negotiation Speeds” boxes, as shown in Figure 6. If more than one
box alternative is checked the Canopy unit enters into auto-negotiation mode that will
result in improper Ethernet communication with the TMUX, and consequently poor T1/E1
performance. Again, only the “100 Base T Full Duplex” box should be checked.
Figure 5. TMUX GUI Ethernet port configuration