Cabletron Systems EMM-E6 User Manual

Page of 118
Using the EMM-E6 Hub View
2-30
Managing the Hub
Configuring RIC MIM Connections
Because each RIC MIM repeats packets independently, you can insert it into the 
network via backplane channels B or C, or isolate it to act as a self-contained 
network.
To change a RIC MIM’s channel assignment:
1.
Click mouse button 3 in the appropriate area to display the Network menu 
(refer to 
). Be sure to display the Network menu from the 
RIC MIM you wish to change, as this menu option applies 
only to the RIC MIM 
from which it was accessed.
2.
Drag down to Change Channel, and right to select Channel BChannel C
or Standalone. The new channel assignment will be displayed in the 
appropriate Network Connection box on the MIM display.
Note that a RIC MIM in stand-alone mode becomes an “orphan MIM” and is no 
longer in full communication with the EMM-E6, and most network, module, and 
port menu options are disabled for that MIM. In addition, unless there is a direct 
cable connection, the packets it repeats are not being repeated to the other MIMs 
in the hub. However, you can still use the Network menu to put the RIC MIM 
back onto Channel B or C to re-enable all menu options and re-establish 
connection with the hub.
Configuring TPXMIM  Connections
The TPXMIM provides two levels of FNB connectivity: you can assign the board 
as a whole or each individual port to one of the three internal FNB channels: A, B, 
or C; in addition, you can configure the whole board to operate in a stand-alone 
NOTE
Change Channel is the only option on the Network menu which does not apply to all 
MIMs operating on the same channel! If you wish to change a RIC MIM’s channel 
assignment, you must do so by accessing the Network menu from each RIC MIM you 
wish to re-configure.
!
CAUTION
If your SPMA workstation is connected to a RIC MIM and you configure that RIC MIM 
to stand-alone mode, you will cut your station’s contact with the network. If this happens, 
you will not be able to access the network again until you physically reconnect your 
station to a port that is active on the network.
NOTE
If the FNB backplane in a non-shunting MMAC is broken by an empty slot between the 
RIC MIM and the EMM-E6, all MIMs to the left of the break which are operating on 
channels B and C will revert to the orphan, or stand-alone, state described above. This 
state change will be reflected in the Hub View display.