Enterasys TRMIM-10R Manual

9030609-01 September 1992 1

ADDENDUM SHEET

Two features have been added to the TRMIM-10R and TRMIM-20R.

The units now have autowrap capability and a BYP LED on the front

panel. This addendum describes these changes.

AUTOWRAP CAPABILITY

TheTRMIM-10RandTRMIM-20Rnowhaveautowrapcapability.This

addendum supplements Chapter 3 (Installation) of the manual. All

references to wrap jumpers are no long applicable.

The RI/RO LEDs on the front panel are now two color. They display

green when the port is not wrapped and display red when the port is

wrapped. If the light is off, the port has been disabled by network

management.

Ring-in/Ring-out LEDs

TRMIM-20R

BYP

16Mb

R I

Ring-in / Ring-out

(green non-wrap, red wrap, off disabled)

SN 16Mb BYP

TRMIM-10R

TOKEN RING

ADDENDUM

2 9030609-01 September 1992

Switches have been added to the board as shown in the figure below.

The switches are configured as follows:

Switch 1

ON To enable autowrap at the Ring-In port (i.e.,

Ring-In is connected to a device capable of

autowrap operation)

OFF To disable autowrap at the Ring-In port (i.e., the

upstream device is incapable of autowrap

operation)

Switch 2

ON To enable autowrap at the Ring-Out port (i.e.,

Ring-Out is connected to a device capable of

autowrap operation)

OFF To disable autowrap at the Ring-Out port (i.e.,

the downstream device is incapable of autowrap

operation)

Modules are shipped with switches 1 and 2 turned on. Switches 3 and

4 are not used.

NOTE:

Autowrap must be disabled when the respective ring port is

attached to a device that is not capable of autowrap (i.e., TRC-800). If

Autowrap is enabled for these connections, the associated repeater ring

port will remain in the wrapped state.

Autowrap Switches

Daughter board

Mother board

Front

nel

1234

OFF

Set Switch to ON for:

SW1 - Ring-In Autowrap Enable

SW2 - Ring-Out Autowrap Enab

led

ADDENDUM

9030609-01 September 1992 3

BYP LED

The TRMIM-10R and TRMIM-20R now have a BYP LED on the front

panel as shown below. All references in the manual to the ERR LED

are no long applicable.

The BYP LED indicates the module is in Bypass mode. When lit, this

indicates the module has been bypassed through system management.

BYP (Bypass) LED

The BYP LED may also be lit when a ring is first powered up and has

no traffic. If the module is not bypassed by system management, the

LED will be extinguished when the first packet is detected.

TRMIM-20R

BYP

16Mb

R I

SN 16Mb BYP

TRMIM-10R

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