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xmagusx
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Trying to get past "sfp-type: (unknown)"

Sun Aug 19, 2018 6:42 am

I'm currently trying to connect an RB2011UAS to a Cisco C3560G-24TS using a Cable Matters 10GBASE-CU 2m cable, but having difficulty. I have set "no errdisable detect cause gbic-invalid" and "service unsupported-transceiver" on the Cisco, such that it is now showing the gi0/28 interface as "notconnect" rather than "err-disabled". Nonetheless, I can't get this link up. Including some basic outputs from both systems in the hopes that someone here can point me in the right direction. Thanks in advance!

Cisco outputs are prefixed with #:
                      name: sfp1
                    status: link-ok
          auto-negotiation: done
                      rate: 1Gbps
               full-duplex: yes
           tx-flow-control: yes
           rx-flow-control: yes
               advertising: 
  link-partner-advertising: 
               sfp-rx-loss: no
                  sfp-type: (unknown)
           eeprom-checksum: good
[user@MikroTik] /system resource> print
                   uptime: 23h38m3s
                  version: 6.42.6 (stable)
               build-time: Jul/06/2018 11:56:50
              free-memory: 100.6MiB
             total-memory: 128.0MiB
                      cpu: MIPS 74Kc V4.12
                cpu-count: 1
            cpu-frequency: 600MHz
                 cpu-load: 5%
           free-hdd-space: 48.9MiB
          total-hdd-space: 64.0MiB
  write-sect-since-reboot: 2900
         write-sect-total: 1470315
               bad-blocks: 0%
        architecture-name: mipsbe
               board-name: RB2011UAS-2HnD
                 platform: MikroTik
#show int gi0/28
GigabitEthernet0/28 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is 001e.7984.cf1c (bia 001e.7984.cf1c)
  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex, Auto-speed, link type is force-up, media type is unknown
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:30:22, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 6 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out
#show ver
Cisco IOS Software, C3560 Software (C3560-IPBASEK9-M), Version 15.0(2)SE11, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2017 by Cisco Systems, Inc.
Compiled Sat 19-Aug-17 09:21 by prod_rel_team
ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)
cisco WS-C3560G-24TS (PowerPC405) processor (revision D0) with 131072K bytes of memory.
Processor board ID FOC1147Y3YT
Last reset from power-on
1 Virtual Ethernet interface
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
Model number                    : WS-C3560G-24TS-S
 
xmagusx
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Re: Trying to get past "sfp-type: (unknown)"

Sun Aug 19, 2018 8:06 pm

Don't know if it is noteworthy, but the green indicator light comes when the cable is plugged in to the MT, but not when plugged into the Cisco. Mostly that just seems to reflect the status I've been seeing in the software.

Other things I have now tried to no avail:

Disabled auto-negotiation on the MT. Can't find a way to do the same on a Cisco SFP port, though.

Upgraded the MT to 6.43rc56.

Tried a different (identical) cable.
 
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k6ccc
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Re: Trying to get past "sfp-type: (unknown)"

Sun Aug 19, 2018 8:14 pm

My first guess is that the SFP is not really compatible with one or both of the devices that they are plugged into. I have found with several equipment brands (MikroTik and others as well) that not all SFPs will work. In fact just this morning I found that none of my assorted pile of 1GigE SFPs would work in a newly installed CSS326-24G-2S. I just ordered a couple MikroTik S-RJ01 SPFs from Amazon.
RB750Gr3, RB750r2, CRS326-24G-2S (in SwitchOS), CSS326-24G-2S, CSS106-5G-1S, RB260GS
Not sure if I beat them in submission, or they beat me into submission


Jim
 
xmagusx
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Re: Trying to get past "sfp-type: (unknown)"

Sun Aug 19, 2018 9:41 pm

Frustrating, but definitely good to know. Does anyone have suggestions for a good twinax cable for this situation in that case?
 
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k6ccc
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Re: Trying to get past "sfp-type: (unknown)"

Mon Aug 20, 2018 12:35 am

Because it's the Cisco that is showing no link, I am guessing that it is the end that does not like the really cheap SFP. Just a guess however.
RB750Gr3, RB750r2, CRS326-24G-2S (in SwitchOS), CSS326-24G-2S, CSS106-5G-1S, RB260GS
Not sure if I beat them in submission, or they beat me into submission


Jim
 
xmagusx
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Re: Trying to get past "sfp-type: (unknown)"

Mon Aug 20, 2018 4:06 am

Yeah, Cisco tends to be annoyingly twitchy about them. On the plus side, I have a matching C3560G arriving tomorrow, so at that point I should have a few more troubleshooting options.
 
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k6ccc
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Re: Trying to get past "sfp-type: (unknown)"

Mon Aug 20, 2018 4:19 am

I had the same issue with some HP 2610-48s. Had to use HP SFPs.
RB750Gr3, RB750r2, CRS326-24G-2S (in SwitchOS), CSS326-24G-2S, CSS106-5G-1S, RB260GS
Not sure if I beat them in submission, or they beat me into submission


Jim
 
xmagusx
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Re: Trying to get past "sfp-type: (unknown)"

Sun Aug 26, 2018 5:32 am

It seems the issue was that Cisco never added that cable to be accepted by a C3560G, only a C3560E. In fact, Cisco never added compatibility for any twinax cable to the C3560G IOS images.

So instead, I went with some GLC-T knock-offs, which worked like a champ.

https://www.amazon.com/gp/product/B073W4TLY9/

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