Are you sure it's a 16 Mbps MAU? Try setting the speed to 4 Mbps with the
ring-speed command. If that doesn't work, try hardcoding it back to 16 Mbps.

Other than that, it's time for the "swap 'til you drop" troubleshooting
methodology.

Try a different: 
cable
router interface
MAU

Do you hear a click after a few seconds when the interface tries to come up?
That's the relay opening. If you don't hear it, then I would suspect bad
hardware or hardware that's in a weird state. Years ago, Token Ring
troubleshooters carried around a little reset tool, but I haven't seen one
of those in years. The tool reset the port on MAUs. Mabye there's some other
way to do that on your SMC MAU. Is there a reset button or anything?

A couple years ago there was a discussion on Group Study regarding the same
MAU, and the resolution I think was that the MAU was bad.
_____________________

Priscilla Oppenheimer
www.troubleshootingnetworks.com
www.priscilla.com

Juan Blanco wrote:
> 
> Team,
> Could any tell me what I am doing wrong....I am trying to bring
> up my
> token-ring interface up? I connect the TR interface with a
> Token Ring
> 4-16 - media filter via a rj45 strait cable to mau(smc elite
> mau 4016rn),
> but the interface is always in init mode and the port status
> light on the
> mau is switching between on and off repeatedly.
> 
> r3#show int token0
> TokenRing0 is initializing, line protocol is down
>   Hardware is TMS380, address is 0008.de1c.6666 (bia
> 0008.de1c.6666)
>   MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec,
>      reliability 255/255, txload 1/255, rxload 1/255
>   Encapsulation SNAP, loopback not set
>   Keepalive set (10 sec)
>   ARP type: SNAP, ARP Timeout 04:00:00
>   Ring speed: 16 Mbps
>   Duplex: half
>   Mode: Classic token ring station
>   Group Address: 0x00000000, Functional Address: 0x08000000
>   Ethernet Transit OUI: 0x000000
>   Last input 00:01:27, output 00:01:26, output hang never
>   Last clearing of "show interface" counters never
>   Queueing strategy: fifo
>   Output queue 0/40, 0 drops; input queue 0/75, 0 drops
>   5 minute input rate 0 bits/sec, 0 packets/sec
>   5 minute output rate 0 bits/sec, 0 packets/sec
>      10 packets input, 304 bytes, 0 no buffer
>      Received 6 broadcasts, 0 runts, 0 giants, 0 throttles
>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0
> abort
>      24 packets output, 5932 bytes, 0 underruns
>      0 output errors, 0 collisions, 54 interface resets
>      0 output buffer failures, 0 output buffers swapped out
>      87 transitions
> 
> 
> #
> r3#show ip int brief
> Interface                  IP-Address      OK? Method Status
> Protocol
> Ethernet0                  unassigned      YES NVRAM 
> administratively down
> down
> Serial0                    unassigned      YES NVRAM 
> administratively down
> down
> Serial1                    unassigned      YES NVRAM 
> administratively down
> down
> TokenRing0                 unassigned      YES NVRAM 
> initializing
> down
> r3#
> r3#
> 
> 
> Thanks,
> 
> 
> 
> JB
> 
> 
> 
> 
> 
> Juan Blanco
> ********************************************************************
> The greatest glory in living lies not in never falling,
>      but in rising every time we fall ."
>  -- Nelson Mandela
> ********************************************************************
> 
> 




Message Posted at:
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