Selecting The Ring Speed; Setting Port Configurations - Cabletron Systems MCC-16 User Manual

MCC-CRIO SETUP

5.2.1 Selecting The Ring Speed

Use jumper P1 to select the MCC-CRIO ring speed, as listed in
Table 5-1 Ring Speed Settings With Jumper P1
Ring Speed Setting
16 Mbps
4 Mbps
5.2.2 Setting Port Configurations
The RI/RO ports have an autowrap capability (i.e., transmit phantom
current) to close the ring, when:
A cable is cut
•
A cable fails
•
• A cable is not attached to a port
In the SW1 switchblock, Switch 1 and Switch 3 control the RI port.
Switch 2 and Switch 4 control the RO port.
Connecting RI/RO Ports To The RI/RO Ports Of Cabletron Devices
Switch 1 overrides Switch 3 and Switch 2 overrides Switch 4.
NOTES
autowrap capability is set at
The
configuration allows the connection of Cabletron RI/RO ports.
(See
Set Switch 1 On and Switch 3 On to connect the RI of the MCC-CRIO to
the RO of a Cabletron device.
Set Switch 2 On and Switch 4 On to connect the RO of the MCC-CRIO to
the RI of a Cabletron device.
5-4
Table 5-2.)
Put Jumper P1 Sleeve Over
Pins 1 and 2 (Default setting)
Pins 2 and 3
the factory. This default
Table 5-1.