Cabletron Systems EMM-E6 - Manual (Page 46)

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
Figure 2-5 , page 2-7 ). 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 B, Channel 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.