Connect GBIC to SFP

Hello everybody.
Ok. here is the question. Is it possible to make an uplink between a Cisco Catalyst 3550 switch (via 1000BASE-T GBIC model WS-G5483) and a Catalyst 2960 switch (via 1000BASE-T model GLC-T SFP module or it's gigabit Etherner ports)?
Best Regards
Luis Alvarez

Hi , just tested it for you , yes it works , WS-C2960-24TT-L & ws-g5483 & WS-C3550-48-EMI connected together with the rj45 10/100/1000 port ,see logs attached :
cheers & good luck
Edgse

Similar Messages

Migration - GBIC to SFP

Sirs,
I currently have a fiber link connected to an unknown GBIC (plugged into a NM-1gE in a Cisco3745) which has the following outputs in show commands:
show interface:
GigabitEthernet1 / 0 is up, line protocol is up
   Hardware is i82543 (Livengood), address is 000e.839d.12c0 (bia 000e.839d.12c0)...
   MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
      reliability 255/255, txload 1 / 255, rxload 1 / 255
   Encapsulation ARPA, loopback not set
   Keepalive set (10 sec)
Full-duplex, 1000Mb / s, link type is autonegotiation, media type is SX
show controllers:
sh controllers gigabitEthernet 1 / 0
Interface GigabitEthernet1 / 0 (idb 0x61F8B4A8)
Hardware is i82543 (Livengood) A2
   network connection mode is AUTO
   network link is up
   loopback type is none
   SERDES is enabled (TBI mode), GBIC is enabled
GBIC type is 1000BaseSX
I have to replace this router for a Cisco7206VXR (NPE-G2), the fiber will be connected to an SFP module.
The fiber size is approximately 15 meters and the specification is: 50/125
I will just rebuild the connectors on the fiber (replacing only my side), changing SC to LC.
(see the figure)
Thanks for help!
Ouvir
Ler foneticamente
Dicionário - Ver dicionário detalhado
interjeição
oi
olá

Sorry ...
I forgot the questions
I have two questions:
- Which SFP module can I use in Cisco7206VXR (SFP-GE-S?)
- Is there anything else I should observe?
Thanks!

GBIC to SFP

Can I connect a GBIC port to a SFP port ?are there suitable fiber cords for the same?

There are also some GBICs/SFPs that are designed to work on different frequencies than the standards.
CWDM does this and occasionally I find that people end up with one of one type, and the other side is another type.
Just take a look at their names and you can usually figure out what they are.
This page seems to be a good quick list of common GBICs and SFPs.
http://www.cisco.com/en/US/docs/routers/7200/install_and_upgrade/gbic_sfp_modules_install/5067g.html#wp54251

Fabric Interconnect 6248 & 5548 Connectivity on 4G SFP with FC

Hi,
Recently I came across a scenario when I connected a 4G SFP on Expansion Module of 6248 Fabric Interconnect at one end and at other end 4G SFP on 5548UP. I was unable to establish FC connectivity between both of the devices and the momemt I connected 4G SFP on Fixed Module of 6248 connectivity got established between both the devices
I would like to know do I have to do any changes on FI's Expansion module to get the connectivity working or this kind of behivor is expected behavior
Do let me know if you need any other information on this
Regards,
Amit Vyas

Yes, On FI-B port 15-16 should be in VSAN 101 instead of 100, I have made that correction
Q. are you migrating the fc ports from the fixed to the expansion module ?
     A: As off now I am not migrating FC port but in near future I have to migrate FC ports to Expansion module and I don't want to waste my time for troubleshooting at that time.
Is my understanding correct, that you have 2 links from each FI to a 5548, no port fc port-channel ?
     A: Yes, your understanding is correct we have 2 links from each FI to 5548 and no FC port-channel is configured
I will do the FC port-channel later on once I am able to fix the connectivity issue
I will try to put 4G SFP on expansion module and will provide you output of "show interface brife"
Following is the out of "show interface brife" from both 5548UP switches
Primary5548_SW# show interface brief
Interface Vsan   Admin Admin   Status          SFP    Oper Oper   Port
                  Mode   Trunk                          Mode Speed Channel
                         Mode                                 (Gbps)
fc1/29     100    auto   on      up               swl    F       4    --
fc1/30     100    auto   on      up               swl    F       4    --
fc1/31     100    auto   on      up               swl    F       4    --
fc1/32     100    auto   on      up               swl    F       4    --
Ethernet      VLAN    Type Mode   Status Reason                   Speed     Port
Interface                                                                    Ch #
Eth1/1        1       eth access down    Link not connected          10G(D) --
Eth1/2        1       eth access down    Link not connected          10G(D) --
Eth1/3        1       eth access down    SFP not inserted            10G(D) --
Eth1/4        1       eth access down    SFP not inserted            10G(D) --
Eth1/5        1       eth access down    SFP not inserted            10G(D) --
Eth1/6        1       eth access down    SFP not inserted            10G(D) --
Eth1/7        1       eth access down    SFP not inserted            10G(D) --
Eth1/8        1       eth access down    SFP not inserted            10G(D) --
Eth1/9        1       eth access down    SFP not inserted            10G(D) --
Eth1/10       1       eth access down    SFP not inserted            10G(D) --
Eth1/11       1       eth access down    SFP not inserted            10G(D) --
Eth1/12       1       eth access down    SFP not inserted            10G(D) --
Eth1/13       1       eth access down    SFP not inserted            10G(D) --
Eth1/14       1       eth access down    SFP not inserted            10G(D) --
Eth1/15       1       eth access down    SFP not inserted            10G(D) --
Eth1/16       1       eth access down    SFP not inserted            10G(D) --
Eth1/17       1       eth access down    SFP not inserted            10G(D) --
Eth1/18       1       eth access down    SFP not inserted            10G(D) --
Eth1/19       1       eth access down    SFP not inserted            10G(D) --
Eth1/20       1       eth access down    SFP not inserted            10G(D) --
Eth1/21       1       eth access down    SFP not inserted            10G(D) --
Eth1/22       1       eth access down    SFP not inserted            10G(D) --
Eth1/23       1       eth access down    SFP not inserted            10G(D) --
Eth1/24       1       eth access down    SFP not inserted            10G(D) --
Eth1/25       1       eth access down    SFP not inserted            10G(D) --
Eth1/26       1       eth access down    SFP not inserted            10G(D) --
Eth1/27       1       eth access down    SFP not inserted            10G(D) --
Eth1/28       1       eth access down    SFP not inserted            10G(D) --
Eth2/1        1       eth access down    SFP not inserted            10G(D) --
Eth2/2        1       eth access down    SFP not inserted            10G(D) --
Eth2/3        1       eth access down    SFP not inserted            10G(D) --
Eth2/4        1       eth access down    SFP not inserted            10G(D) --
Eth2/5        1       eth access down    SFP not inserted            10G(D) --
Eth2/6        1       eth access down    SFP not inserted            10G(D) --
Eth2/7        1       eth access down    SFP not inserted            10G(D) --
Eth2/8        1       eth access down    SFP not inserted            10G(D) --
Eth2/9        1       eth access down    SFP not inserted            10G(D) --
Eth2/10       1       eth access down    SFP not inserted            10G(D) --
Eth2/11       1       eth access down    SFP not inserted            10G(D) --
Eth2/12       1       eth access down    SFP not inserted            10G(D) --
Eth2/13       1       eth access down    SFP not inserted            10G(D) --
Eth2/14       1       eth access down    SFP not inserted            10G(D) --
Eth2/15       1       eth access down    SFP not inserted            10G(D) --
Eth2/16       1       eth access down    SFP not inserted            10G(D) --
Port   VRF          Status IP Address                              Speed    MTU
mgmt0 --           up     172.20.10.82                            1000     1500
Interface Vsan   Admin Admin   Status      Bind                 Oper    Oper
                  Mode   Trunk               Info                 Mode    Speed
                         Mode                                            (Gbps)
vfc1       100    F     on     errDisabled Ethernet1/1              --
Primary5548_SW#
Secondary5548_SW# show interface brief
Interface Vsan   Admin Admin   Status          SFP    Oper Oper   Port
                  Mode   Trunk                          Mode Speed Channel
                         Mode                                 (Gbps)
fc1/29     101    auto   on      up               swl    F       4    --
fc1/30     101    auto   on      up               swl    F       4    --
fc1/31     101    auto   on      up               swl    F       4    --
fc1/32     101    auto   on      up               swl    F       4    --
Ethernet      VLAN    Type Mode   Status Reason                   Speed     Port
Interface                                                                    Ch #
Eth1/1        1       eth access down    Link not connected          10G(D) --
Eth1/2        1       eth access down    Link not connected          10G(D) --
Eth1/3        1       eth access down    SFP not inserted            10G(D) --
Eth1/4        1       eth access down    SFP not inserted            10G(D) --
Eth1/5        1       eth access down    SFP not inserted            10G(D) --
Eth1/6        1       eth access down    SFP not inserted            10G(D) --
Eth1/7        1       eth access down    SFP not inserted            10G(D) --
Eth1/8        1       eth access down    SFP not inserted            10G(D) --
Eth1/9        1       eth access down    SFP not inserted            10G(D) --
Eth1/10       1       eth access down    SFP not inserted            10G(D) --
Eth1/11       1       eth access down    SFP not inserted            10G(D) --
Eth1/12       1       eth access down    SFP not inserted            10G(D) --
Eth1/13       1       eth access down    SFP not inserted            10G(D) --
Eth1/14       1       eth access down    SFP not inserted            10G(D) --
Eth1/15       1       eth access down    SFP not inserted            10G(D) --
Eth1/16       1       eth access down    SFP not inserted            10G(D) --
Eth1/17       1       eth access down    SFP not inserted            10G(D) --
Eth1/18       1       eth access down    SFP not inserted            10G(D) --
Eth1/19       1       eth access down    SFP not inserted            10G(D) --
Eth1/20       1       eth access down    SFP not inserted            10G(D) --
Eth1/21       1       eth access down    SFP not inserted            10G(D) --
Eth1/22       1       eth access down    SFP not inserted            10G(D) --
Eth1/23       1       eth access down    SFP not inserted            10G(D) --
Eth1/24       1       eth access down    SFP not inserted            10G(D) --
Eth1/25       1       eth access down    SFP not inserted            10G(D) --
Eth1/26       1       eth access down    SFP not inserted            10G(D) --
Eth1/27       1       eth access down    SFP not inserted            10G(D) --
Eth1/28       1       eth access down    SFP not inserted            10G(D) --
Eth2/1        1       eth access down    SFP not inserted            10G(D) --
Eth2/2        1       eth access down    SFP not inserted            10G(D) --
Eth2/3        1       eth access down    SFP not inserted            10G(D) --
Eth2/4        1       eth access down    SFP not inserted            10G(D) --
Eth2/5        1       eth access down    SFP not inserted            10G(D) --
Eth2/6        1       eth access down    SFP not inserted            10G(D) --
Eth2/7        1       eth access down    SFP not inserted            10G(D) --
Eth2/8        1       eth access down    SFP not inserted            10G(D) --
Eth2/9        1       eth access down    SFP not inserted            10G(D) --
Eth2/10       1       eth access down    SFP not inserted            10G(D) --
Eth2/11       1       eth access down    SFP not inserted            10G(D) --
Eth2/12       1       eth access down    SFP not inserted            10G(D) --
Eth2/13       1       eth access down    SFP not inserted            10G(D) --
Eth2/14       1       eth access down    SFP not inserted            10G(D) --
Eth2/15       1       eth access down    SFP not inserted            10G(D) --
Eth2/16       1       eth access down    SFP not inserted            10G(D) --
Port   VRF          Status IP Address                              Speed    MTU
mgmt0 --           up     172.20.10.84                            1000     1500
Interface Vsan   Admin Admin   Status      Bind                 Oper    Oper
                  Mode   Trunk               Info                 Mode    Speed
                         Mode                                            (Gbps)
vfc1       1      F     on     errDisabled Ethernet1/1              --
Secondary5548_SW#

GBIC or SFP Information

Can anyone please let me know that how will I find the availability of GBIC or SFP card in its slot provided.
I am trying to find this for following device types
6509, 7200, 7500, 7600 & 29-00 devices.
I tried
"show diag" it gives information only up to port adapter level, no information is provided about the availability of the pluggable factors.
"show interface GigabitEthernet" I see some response even if the hardware is not plugged in.
Please help

Hi,
For the 6500 and 7600 one command might give you the information needed:
show idprom interface gigx/y
or for the entire module:
show idprom module x
For the 7200/7500 platform I am not aware of any command.

Difference between GBIC and SFP module

when its best to use GBIC and When to use SFP ?
what i know is basically SFP is a smaller version of GBIC but I am not clear when to use what any special recommendation ?

GBIC - Datasheet definition:
The industry-standard Cisco Gigabit Interface Converter (GBIC) is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. Cisco GBICs can be interchanged on a wide variety of Cisco products and can be intermixed in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, or 1000BASE-CWDM interfaces on a port-by-port basis.
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet09186a008014cb5e.html
SFP - Datasheet definition:
The industry-standard CiscoÂ® Small Form-Factor Pluggable (SFP) Gigabit Interface Converter is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network (Figure 1). SFPs can be used and interchanged on a wide variety of Cisco products and can be intermixed in combinations of 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, or 1000BASE-BX10-D/U on a port-by-port basis.
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet09186a008014cb5e.html
Ok, now if you have a look at the above datasheets for GBIC's & SFP's, you would find that GBIC & SFP are different in there sizes, hence it is more of a question as to which gigabit solution your device supports. If your device supports GBIC, like 4500's, you will have to go for a GBIC, & if your device supports SFP, like 3750's, you will have to go for a SFP. These days all the latest devices would have SFP's normally.
Also, here is a very good document which lists almost all the GBIC's & SFP's & the devices on which they are supported, you may check your device on this list & decide which one can you use accordingly.
Hope that helps !!

Connting gbic and sfp

Hi,
I have two switches, 3750 (12 SFP ports) and 2950 (with 2 GBIC ports) and I want to connect the GBIC from 2950 and SFP from 3750 interfaces at gigabit speed. Are there special fiber patches for doing this (with one end for SFP and the other for GBIC)?
Thanks in advance

HI Gabriel,
Depending on the type of SFP you are using, you will need one of the following types of cables:
Single Mode LX LC-to-SC Connectors
Fiber Multimode SX LC-to-SC Connectors
The SFP uses an LC-terminated cable ....
Hope that helps - pls rate the post if it does.
Paresh

GBIC AND SFP

Am a little bit confuse as to the differencen sfp and GBIC.
I have also come across gigabit Stack gbic. Any contribution to make this clear
will be appreciated.
Cheers
Jitez

SFP and GBIC are just interface units that makes the users having a better choice of what to be able to connect to an switch, instead of having a switch model for single mode fiber(LH,ZX) , multi mode fiber, copper, CWDM and so on... The make an switch that have the logical interface and then just make the physical interface connectible and interchangeable in the switch.. Thus only needed to make fewer models.
The difference between SFP and GBIC are primarily just an big size difference, it's really impossible to connect an GBIC to an SFP port and vice versa, so there is no worries about connecting the "wrong" interface unit.
The gigastack gbic are for making an connection that you could stack switches with and only use one GBIC port instead of two if you use ordinary Ethernet GBICs for it.
Hope this was to some help/assistance?

GBIC and SFP Module

HI , Welcome for All
I am putting two series widely in my new network , which are 500 and 3500 series , but here I am getting confused to select the Interface Module , Should I opt GLC-SX-MM or WS-G5484
Thanks
Praveen 9212 506 503

500 supports only GLC-SX-MM and GLC-LH-SM
GLC-SX-MM is SFP while WS-G5484 is GBIC they both operate in ordinary multimode fibre
You may opt to GLC-SX-MM for 500 and WS-G5484 for 3500. But you should tell us the exact model of you 3500.
Here is the link http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html

GBIC LX SFP problem on cat3750

hi,
how was this possible ? i've tried on diff IOS and face same problem. thanks
00:03:30: %GBIC_SECURITY_CRYPT-4-ID_MISMATCH: Identification check failed for GBIC in port 65561
00:03:30: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi1/0/25, putting Gi1/0/25 in err-disable
22:28:52: %GBIC_SECURITY_CRYPT-4-ID_MISMATCH: Identification check failed for GBIC in port 65537
22:28:52: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi1/0/1, putting Gi1/0/1 in err-disable state
00:09:32: %GBIC_SECURITY_CRYPT-4-ID_MISMATCH: Identification check failed for GBIC in port 65561
00:09:32: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi1/0/25, putting Gi1/0/25 in err-disable state

Hi,
If its a Cisco GBIC, it should get recognised as you meet the IOS requirement. Is it the only one with which u r facing the problem or some others too.
There are some fake GBICS in the market to with exact look alike as the cisco one. Please open a TAC request along with the model and product number of the GBIC u r using and TAC should be able to help you in this matter.
regards,
-amit singh

Linking two switches together.

hi Guys ,
quick question in relation to joining two switches together,
can I link a 2950 switch with a 1000 BASE-SX with a 3560G with 4 SPF ports with fibre and what pitfalls should i look out for .
Thanks in advance
Kevin

Hello,
So you would like to connect GBIC to SFP, you need Multimode Duplex Fiber Optical cable with SC-LC connectors. If SFP to SFP you need the same cably type with LC-LC connectors.
http://www.cisco.com/en/US/products/hw/routers/ps341/prod_module_installation_guide09186a00801cc731.html
http://cisco.com/en/US/products/hw/modules/ps5455/products_data_sheet09186a008014cb5e.html
bye
FCS
Please rate me if I helped.

Optical Fiber connection between GBIC module and SFP module

Hi
I am in need of help.
I have a 3750 24TS-S, 2 port SFP, switch at the edge. And i have a 4507R switch at the Distribution layer. In 4507 switch I have WS-X4515 Sup IV supervisor engine with 2 GBIC Port and also have WS-4306-GB 6 port GBIC module. I am using WS-G5486 Single mode connector, LX/LH tranceiver to connect to this port.
This is the scenario.. i want to know is it posible to conect one end of the fiber cable to connect to a SFP Module ( 3750-24TS-S, 2 Port SFP) and other end ( WS-X4515 Sup IV supervisor engine with 2 GBIC Port or WS-4306-GB 6 port GBIC module) at the WS-G5486 Single mode LX/LH connector ?????
Plz let me now asap.. i need to give a solution imdtly.
Thanks & regards
Jacob

Discussion is never a problem ....;-}
The issue is that the signal is "too loud" and is distorted (or, more correctly, is so loud it overloads the receiver).
The operational envelope for nearly every receiver of any kind includes a bottom number (too weak to hear) and a top number (too loud to understand).
As an example, think about an system where you have a hearing aid that would let you hear someone speaking in a normal voice from 100 feet away ... then having someone scream the same words into the hearing aid from 6 inches away ... the sound would be distorted and you would have difficulty understanding them ... after a while, you'd begein to go deaf and eventually, it would sound normal (until you became completely deaf).
So, what you need to do is look at the transmitter power, and the envelope/range of acceptable power the receiver can hear.
Normally that difference is the optical budget ... given the loss numbers of the media between the two, you can determine if you have enough power to make the trip.
In a Lab environment, you still have to hit the receiver's budget number, but from the other end (the "too high" side).
If you know the transmitter puts out X, and the receiver can accept from Y to (X-50), then you need to add enough attenuation to get X down to (X-50)or lower (but still more than Y).
When you have a transmitter powerful enough to drive tens of kilometers, putting one two meters away from the receiver will pretty much guarantee a burnout (unless you install optical attenuation).
Good Luck
Scott

Media Convertors vs. Inline SFP or GBIC

I have read over many posts on this forum, but I still have some questions......
Are there any gained advantages in using the Cisco SFP or GBIC to connect to the Fiber Cabling (besides Product Support) over external Media Convertors?
I am new to the Optical World. A design project was dropped in my hands. I have to connect 2 offices using Fiber. The actual underground cable run will be handled by an outside contractor. Short Distance (less than 1 km).
I have to come up with an equipment list and configure the network devices after they are purchased. I am looking at a 3750 Switch at each site and Transition Media Convertors hanging off of an Ethernet switchport (100 or 1000) that connect to the fiber. I am also looking to make those interfaces VLAN trunks.
Is it better to use the inline SFP modules instead?
(I figure using the External Media Convertors instead would be keeping it simple since I can attach it to an configurable ethernet port on the switch)
also
Are the fiber SFP modules configured like any other interface?
interface ethernet XX
swithport mode trunk
etc
any thoughts appreciated

Advantages to Gigabit-speed SFP or GBIC:
* Takes up less space.
* It derives power from the switch it's plugged into. (Media converter requires a separate AC power outlet.)
* Covered under the warranty or Cisco SMARTnet maintenance contract you have on the switch it's plugged into. (Transition's media converters have a lifetime warranty, but the turn-around time on a replacement may not be as quick as what you get with a SMARTnet agreement.)
Disadvantages:
* Cost?
* Can only be used with Cisco devices. (Transition's media converter can be connected to any manufacturer's switch.)
What kind of fiber you are running between the two buildings?
Generally speaking, single mode fiber will require Cisco's LX/LH GBICs to run Gigabit Ethernet from 0 (zero) to 10km. These run $995 list price each (two are needed).
Multimode fiber can use the SX GBICs from 0 to 220-275m if 62.5-micron in diameter, and out to 500-550m if 50-micron. SX GBICs run $500 list price each (two are needed).
If 62.5-micron and longer than 220-275m but less than 550m, you can use LX/LH GBICs with specialized mode-conditioning patch cables. These cables are somewhat more expensive than regular patch cables: figure on 2X the price or a regular one.
If you can get by with a 100-megabit Fast Ethernet link over the fiber, then the media converters are the way to go. Over multimode, you can drive Fast Ethernet out to 2km in full duplex mode; over single mode, the least expensive ones can push to 20km with ease (also full duplex).
By default, the Transition 100-meg media converters autodetect duplex setting, so you can plug it into a 10/100 auto port on the switch and it will crank up to full duplex. Or, you can hard-code the port to 100 full and manually set the converter to be the same.
Configuration of the switchport as a VLAN access port or VLAN trunk port is the same, whether it's got a media converter or GBIC or SFP on it. On a fiber port in the switch (SFP or GBIC), speed is limited to 1000 megabit only: it cannot "down-shift" to 100 meg. And on Cisco's switches and routers, it's always full duplex. Copper ports can do 10/100 or 10/100/1000 autodetect speed and duplex, but these can also be hard-coded.
Hope this helps.
EDITED TO ADD: List pricing on Cisco's SFPs is the same as the GBICs.

1000BaseT SFP GBIC Cabling?

With the 1000BaseT SFP GBIC (GLC-T) when connecting 2 switches together using these modules what cabling is required? I know with the 1000BaseT GBIC (WS-G5483) you can use either a straight 4-pair Cat5/6 cable or a full 4-pair Gigabit Ethernet Crossover cable.
I have previously had the problem with 10/100/1000 ports where you MUST use a Gigabit Ethernet Crossover cable and a straight cable does not work.
The 1000BaseT only GBIC (WS-G5483) has the relevent circuitry to do the crossover itself, does the 1000BaseT SPF GBIC (GLC-T) do the same?
Thanks
Andy

Auto-MDIX capability is not dependent on GBICs but the switch itself. If your switch supports Auto-MDIX, you can use either straight-through or cross-over cable to connect via Copper SFPs
Refer to the following document
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12119ea1/3750hig/higcable.htm

2960x - stack cables connected while switches power on. SFP ports - status unknown

Connected 2960x uplink using SFP ports both stacks and all 4 ports worked good.
Remote tech connected last stack cable between first and last switch, in 2 different 2960x stacks of switches, while switches were powered on. A longer stack cable was needed. 3 of 4 SFP ports did stopped communicating.
One stack SFP stayed up in switch 2, not master. Completed reload - other SPF connected in switch 4/0/52
Second stack no connection on either SFP, remote tech power cycled switches.
After power cycle one SFP worked in Master 1/0/52, other switches SFP ports show "unknown" when inserting SFP.
Configured port 48 on stack with issue and connected second uplink just fine.
Has anyone experienced this with the SFP's?
- GLC-T P/N 30-1410-03
Looking for documentation on reccommending procedure for connecting stack cables while switches should be powered off or not.
Thanks,

Opened Cisco TAC case. the following bug was found.
the two different HBRN's below require 2 different IOS and they cannot be in same stack.
https://tools.cisco.com/bugsearch/bug/CSCur56395
switch#sh ver | s Hardware Board
Hardware Board Revision Number : 0x05
switch#remote command 2 sh ver | s Hardware Board
Switch : 2 :------------ Hardware Board Revision Number : 0x05
switch#remote command 3 sh ver | s Hardware Board
Switch : 3 : ------------ Hardware Board Revision Number : 0x12
switch#remote command 4 sh ver | s Hardware Board
Switch : 4 :------------Hardware Board Revision Number : 0x12
From Cisco.
Developers have recommended to upgrade the IOS version of switches with a Hardware Board revision Number below 0x10 to the release 15.0(2.0).EX5ES. this is the one attached to this email and should be applied to switch 1 and 2.
For switches with a Hardware Board revision Number above 0x10 to the release 152-2.4.E1ES, which I will send you right away. This should be done on switch 3 and 4.
Now, If you load the engineering special, you will need to do a full power-cycle (physically unplug the power and plug it back in for every single switch). A simple ‘reload’ will not resolve this.
The same must be done on Switch-0. For this stack you will only need to load the image attached to this email since all the Hardware Board revision Numbers are lower than 0x10.
done.

Connect GBIC to SFP

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