From: sater@cs.vu.nl (Hans van Staveren)
Subject: FDDI board refuses to work, 100% cpu load to boot
Organization: Fac. Wiskunde & Informatica, VU, Amsterdam
Date: Thu, 7 Jan 1993 17:58:10 GMT

I just installed our first FDDI board in our Cisco, and surprise..
it doesn't work. It looks like it cannot enter into the ring. I had it
installed at first in our ring with 3 Interphase FDDI boards, but when that
didn't work I tried looping back the Cisco to itself. Even that did not
work. I configured it:
	interface fddi0
	ip address 130.37.16.1 255.255.255.0
	no shutdown

The router is now very slow, the 'show proc' output shows that the PHY-A
and PHY-B processes take all the time. I did a shutdown on the interface
and the router is back to normal.

Here is some other data: if this means anything to more experienced
FDDI customers I would be much appreciated.

colossus#show hardware
GS Software (GS3-F), Version 8.2(7) 
Copyright (c) 1986-1991 by cisco Systems, Inc.
Compiled Wed 13-Nov-91 17:45 by mlb

System Bootstrap, Version 4.3(5) 

colossus uptime is 36 minutes
System restarted by power-on
Running default software

CSC3 (68020) processor with 4096K bytes of memory.
1 cBus controller.
6 Ethernet/IEEE 802.3 interface.
1 FDDI network interface.
Environmental Controller.
64K bytes of multibus memory.
64K bytes of non-volatile configuration memory.
Configuration register is 0x101

colossus#show controller cbus

cBus 0, controller type 3.0, microcode version 2.0
  128 Kbytes of main memory, 32 Kbytes cache memory
  Restarts: 0 line down, 0 hung output, 0 controller error
 MEC 0, controller type 5.1, microcode version 2.2
  Interface 0 is Ethernet0, station address 0000.0c01.c806
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
  Interface 1 is Ethernet1, station address 0000.0c01.c807
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
  Interface 2 is Ethernet2, station address 0000.0c01.c808
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
  Interface 3 is Ethernet3, station address 0000.0c01.c809
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
  Interface 4 is Ethernet4, station address 0000.0c01.c80a
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
  Interface 5 is Ethernet5, station address 0000.0c01.c80b
    10 buffer RX queue threshold, 13 buffer TX queue limit
    Transmitter delay is 0 microseconds
 --More--  
 FDDI 2, controller type 4.0, microcode version 1.0
  Interface 12 is Fddi0, station address 0000.0c02.1076
    6 buffer RX queue threshold, 5 buffer TX queue limit
colossus#show controller fddi

Fddi0 - hardware version 4.0, microcode version 1.0
  Phy-A registers:
    cr0 2, cr1 0, cr2 0, status 4, cr3 0
  Phy-B registers:
    cr0 2, cr1 0, cr2 0, status 4, cr3 0
  FORMAC registers:
    irdtlb FC84, irdtneg FFFF, irdmir FFFFFFFF, irdthtt 8A8A
    irdtrth FA94, irdtmax FBC5, irdtvxt 0085, irdstmc 0418
    irdmode 0000, irdimsk 0000, irdstat 0080, irdtpri 0000
  FDDI registers:
    tx_current 0000, tx_pending 0000, tx_restore 0000, tx_clbn 015A
    tx_pen_ofst 0000, tx_pen_cnt 0, tx_pen_type 0000, tx_start_cnt 8000
    rx_current 2504, rx_pending 3FA4, rx_recvd 0000, rx_free 00EE
    rx_flags 0000, rx_error 00FA, rx_limit 4496, rx_word_offset 22
    hold_reg 0001, clm_bn_flg 0000, enable 0001, fsvld 0000
    lstinc 0, errinc 0, mss_frm 0, frinc 0, phy-a 0018, lem_a 1
    fr_int_cnt 0, xtmabti 0, frmcpd 3, eof 3, phy-b 0018, lem_b 9121
    claim 0, beacon 0, async_reg 0, async 0, stat_mask 0100
    sync_req 0, sync 0, tx_state 0000, int_stat 0000
colossus#show int fddi0

Fddi 0 is down, line protocol is down 
  Hardware type is cBus Fddi, hardware address is 0000.0c02.1076
  Internet address is 130.37.16.1, subnet mask is 255.255.255.0
  MTU 4470 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation SNAP, loopback not set, keepalive not set
  ARP type: SNAP, ARP Timeout 4:00:00
  Phy-A state is connect, neighbor is unk, cmt signal bits 08/00, status HLS
    Brk 5257, Con 5257, Tra 0, Nxt 5254, Sig 0, Join 0, Vfy 0, Act 0
  Phy-B state is connect, neighbor is unk, cmt signal bits 20C/00, status HLS
    Brk 5258, Con 5258, Tra 0, Nxt 5255, Sig 0, Join 0, Vfy 0, Act 0
  CFM is isolated, token rotation 5000 usec, ring not operational
  Upstream neighbor 0000.0000.0000, downstream neighbor 0000.0000.0000
  Last input never, output never, output hang never
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  Five minute input rate 0 bits/sec, 0 packets/sec
  Five minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes
     0 output errors, 0 collisions, 4 interface resets, 0 restarts
     0 transitions
Newsgroups: comp.dcom.sys.cisco