Cabletron Systems MCC-16, User Manual

Page: 51 / 90

MCC-DFL SETUP
4-9
4.4 DESCRIPTION OF SWITCHES
This section describes each switch individually.
4.4.1 Switch 1
You can set the type of fiber keying on RI/RO ports to connect to devices
using 802.5J fiber keying or devices using Cabletron fiber keying.
Switch 1 dictates the type of fiber keying; the setting depends on whether
the attached device is using Cabletron fiber keying or 802.5J fiber keying.
Set the switch as listed in
Table 4-7 .
4.4.2 Switch 2
This switch works in conjunction with Switch 4 to select the mode of
operation for the RJ45 port. Use Switch 4 to dictate whether the FOT will
act as a RI/RO device or station/lobe device. Once this has been done,
Switch 2 determines the application of the RJ45 port. The fiber ST
port automatically configures to work with the RJ45 port. For example,
configuring the RJ45 port as a RI, automatically changes the fiber ST port
to a RO. Set the switch as shown in
Table 4-8 .
NOTE
Cabletron Systems offers complete compatibility with vendor
products that comply with the “new” 802.5J standard for fiber
RI/RO ports. Therefore, the MCC-DFL offers connectivity to
products using 802.5J or Cabletron Systems fiber keying.
Table 4-7 Settings For Switch 1 (SW1 And SW2 Switchblocks)
Keying Type for Fiber ST Port Set Switch 1 to Position
Connection to Cabletron compliant devices On
Connection to 802.5J compliant devices Off
Table 4-8 Settings For Switch 2 (SW1 And SW2 Switchblocks)
Mode of Operation for RJ45 Port Set Switch 2 to Position
RO or lobe applications On
RI or station applications Off