100BASE-BX10 SFP

Hi All,
I have several Cisco 3560C setup at multiple stations. The Cisco 3560C are connected in a daisy chain between each other using 100BASE-BX10-D and 100BASE-BX10-U SFP. So, on the first Cisco 3560C (station 1), I have a U-type connecting to the second Cisco 3560C (station 2.). The second Cisco 3560C (station 2) will have a D-type and U-type SFP where the D-type connects to the previous station 1 on its U-type SFP. This setup repeats for station 3 onwards.
It seems that these connections between the stations, I noticed that the Cisco switch registers the link at 100Mb half-duplex and I see incrementing CRCs and collisions. I am not able to hard-code the interface to 100Mb FULL as it seems that the interface configuration does not give me the option to do a 'speed 100' or 'duplex full'.
Is this normal for these kinds of SFP?
Below are some outputs:
Cisco IOS Software, C3560C Software (C3560c405-UNIVERSALK9-M), Version 12.2(55)EX3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Wed 10-Aug-11 07:37 by prod_rel_team
Image text-base: 0x00003000, data-base: 0x02100000
Switch(config)#do sh int status
Port      Name               Status       Vlan       Duplex Speed Type
Fa0/1                        notconnect   15           auto   auto 10/100BaseTX
Fa0/2                        notconnect   15           auto   auto 10/100BaseTX
Fa0/3                        notconnect   15           auto   auto 10/100BaseTX
Fa0/4                        notconnect   15           auto   auto 10/100BaseTX
Fa0/5                        connected    15         a-full a-100 10/100BaseTX
Fa0/6                        notconnect   15           auto   auto 10/100BaseTX
Fa0/7                        notconnect   15           auto   auto 10/100BaseTX
Fa0/8                        notconnect   15           auto   auto 10/100BaseTX
Fa0/9                        notconnect   15           auto   auto 10/100BaseTX
Fa0/10                       notconnect   15           auto   auto 10/100BaseTX
Fa0/11                       connected    trunk      a-full a-100 10/100BaseTX
Fa0/12                       connected    trunk      a-full a-100 10/100BaseTX
Gi0/1                        connected    trunk      a-half a-100 100BaseBX-10U SFP
Gi0/2                        connected    trunk      a-half a-100 100BaseBX-10D SFP
Switch#sh interfaces gigabitEthernet 0/2
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is c025.5c11.928d (bia c025.5c11.928d)
Description:
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 254/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Half-duplex, 100Mb/s, link type is auto, media type is 100BaseBX-10D SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, 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 80000 bits/sec, 22 packets/sec
5 minute output rate 16000 bits/sec, 16 packets/sec
     74931 packets input, 21611558 bytes, 0 no buffer
     Received 48734 broadcasts (39982 multicasts)
     0 runts, 0 giants, 0 throttles
     667 input errors, 667 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 39982 multicast, 0 pause input
     0 input packets with dribble condition detected
     23385 packets output, 3857612 bytes, 0 underruns
     0 output errors, 564 collisions, 1 interface resets
     0 babbles, 29 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

Yes scope all connections with a 900 micron 200x scope, and clean anything you can.
GLC-FE-100BX-U
100BASE-BX10-U
-8
-14
-3
-28.2
GLC-FE-100BX-D
100BASE-BX10-D
-8
-14
-3
-28.2
If its clean, check the TX/RX power levels with a power meters. End-to-end; bidirectional test, on both lamdas.
Because of the CWDM going on, I'm not sure I'd trust the internal "show hard" or
"show interfaces interface-id transceiver detail" internaly.
Obviously this is something common/systemic since it happens betwen multiple locations.
Is the fiber the common denominator?

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Hi
Check software requirements and configuration requirements in the attached guide.
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my question is what happen if i use this gbic with single mode wire under 500m between my sge2000p switch.
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Hello,
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http://www.cisco.com/c/en/us/products/collateral/switches/small-business-100-series-unmanaged-switches/data_sheet_c78-634369.html
Product Ordering Number
Description
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MFEBX1
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MFELX1
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MGE Transceivers
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MGBLX1
1000BASE-LX SFP transceiver for single-mode fiber, 1310 nm wavelength, supports up to 10 km
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https://supportforums.cisco.com/document/140221/interconnect-cisco-sb-switch-and-catalyst-switch-sfp
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Cisco Small Business SFP
Cisco traditional SFP
GE Transceiver
MGBSX1
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MGBLX1
MGBLH1
GLC-LH-SM
MGBBX1
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MGBT1
GLC-T
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FE Transceiver
MFEFX1
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GLC-GE-100FX
MFELX1
GLC-FE-100LX
MFEBX1
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Thanks.
Yiu Kay Lee
Concentrix at Cisco
.:|:.:|:. CISCO | Yiu Kay Lee | SMB Pre-Sales | [email protected] | Phone +1 (855) 354-7776

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Unfortunately, you can't directly connect a 1GE GLC-SX-MM SFP interface to a 100Base-FX interface. You will need to swap the SFP on the 3560G with a 100Base-FX SFP (GLC-FE-100FX).
Cisco 100-Megabit Ethernet SFP Modules Compatibility Matrix
<http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL632702.html>
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SG500X-48-K9-G5 and SG200-18 compatible SFP

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Please rate helpful posts.
From the SG500 manual:
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SFP change on Cisco 3750-X 24S

Hello,
I have a Cisco 3750-X 24S equipped with GLC-GE-100FX optical module to provide 100Mbps connectivity to workstation. I have to migrate the workstation NIC to 1 Gbps and, after that, I have to replace the 100base-FX SFP with the 1 GB SFP.
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Thanks
Gabriele

Paolo is correct in that you do not need to change the configuration for the switch to recognize the SFP.
However some IOS versions and hardware platforms do require you to manually configure the interface speed (even though a fiber SFP only operations at a fixed speed). Check the current port configuration. If it has "speed 100", be sure to change it to "speed 1000".
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SFP for SGE2000P

I am looking to connect a SGE2000P switch to an existing infrastructure. I am unable to locate any information in the literature specifying compatible SFP adaptors. I require to connect to MMF 1350nm 100BASE-FX?

Hi David;
Here is a link to the small business SFP, but note the frequency.
Bad news is that the SGE2010 and not the SGE2000 supports the 100FX SFP (MFEFX1), check the quick start guide URL at the bottom of this post.
http://www.cisco.com/en/US/prod/collateral/modules/ps9934/data_sheet_c78-552203.html
Table 1. MFE and MGE SFP Transceiver Modules
Description
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100BASE-BX-20U SFP transceiver for single-mode fiber, 1310 nm wavelength, support up to 20 km
MFEFX1
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MFELX1
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1000BASE-BX-20U SFP transceiver, for single-mode fiber, 1310 nm wavelength, support up to 40 km
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1000BASE-LH SFP transceiver, for single-mode fiber, 1310 nm wavelength, support up to 40 km
MGBLX1
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1000BASE-T SFP transceiver for category 5 copper wire, support up to 100 m
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Here for your reference is the quick start guide;
https://www.cisco.com/en/US/docs/interfaces_modules/csbna/mgb/quick_start/guide/Optical_Module_QSG_en-US.pdf
regards Dave

Connecting MT-RJ and LC uplinks using singlemode fiber

Hi
I am looking to Design a network with 3750 as core Switch and 2960 as Edge switch
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So my question is Can i connect the uplink between core and Edge switch using Single Mode MT-RJ at core end andSingle Mode LC connector using SFP at Edge end
reason is i cannot afford 3750 with 12 SFP at my core end ,which is quite expensive
Regards
Deva

Deva,
Unfortunately, you cannot directly connect the 3750 24-FX 100BASE-FX ports to the 2960 SFPs over singlemode fiber (SMF). This is because the 3750 24-FX ports use 50/125- or 62.5/125-micron multimode fiber-optic (MMF) cabling.
If the distance between the devices does not exceed 6,562 feet/2 kilometers (100FX reach), then you could install a 100Mbps-FX MMF SFP in the 2960 and use MMF cabling between the devices.
Or, if you only have singlemode fiber available between the two devices, you could install Media Converters between the two devices, such as that from Omnitron Systems.
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3750 24-FX 100BASE-FX -----> Multimode Fiber -----> media convertor ----->Singlemode Fiber -----> media convertor* ----->Singlemode Fiber -----> 2960 w/100Base SMF SFP.
* Some media converters can work single-ended, terminating the other end of the link on the switches SFP interface.
Hybrid fiber optic jumper cables are available with different connectors at each end that allow you to transition between connector types (MR-RJ to LC or other). However, you cannot have a MMF interface at one end of the flink and a SMF interface at the other end (without a conversion device).
Hope this helps!
Tom

3750_GigiE to PA-FE-FX?

Will the SFP based GigE ports on the 3750 talk correctly to a PA-FE-FX on a 7200?

Hi Jason,
There's no document that states it that way per se. The 802.3ab standard (gig over copper) is the only gigabit standard that allows for 10/100/1000 speeds. So you'll need a specific SFP that can plug into a Gig fiber port but transmit at 100Mbps.
Here's the Gigabit SFP data sheet:
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_data_sheet0900aecd8033f885.html
Cisco 100-Megabit Ethernet SFP Modules Compatibility Matrix
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_table09186a0080380847.html
Cisco 100BASE-FX SFP Fast Ethernet Interface Converter on Gigabit SFP Ports
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_data_sheet0900aecd801ba88e.html
HTH,
Bobby

GLC-SX-MM in CGS-2520-16S-8PC fe port

Hi,
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Sorry but a gigabit-only transceiver will not work on 100 Mbps-only SFP ports.
There's almost always a good reason why something is not listed in the compatibility table.

Optical transceiver

Hi,
i have catalyst express 500 switch with transceivers modules GLC-SX-MM, 1000BASE-SX SFP.
Is possible to change the speed of this transceivers to 100Mbit?
... i need it know, because on other side of link is a opical/metallic converter ( AT-MC101XL
Fast Ethernet 100BASE-TX to 100BASE-FX (ST) Multi-Mode Fibre (2km), Stand-Alone Media Converter)
I think converter and tranciever are not compatible. Isn`t it?
Thank.

Unfortunately, the GLC-SX-MM is not switchable to 100Mb operation. You need to purchase a 100Base-FX SFP module for your switch.
According to the following document, these are the 100Mb interfaces compatible with the Express 500:
GLC-GE-100FX
GLC-FE-100FX
GLC-FE-100LX
GLC-FE-100BX-D
GLC-FE-100BX-U
This document details the interop and specifications of these SFPs:
Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting
<http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml#model>
Hope this helps!

100BASE-BX10 SFP

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