Cisco Catalyst 4948-10GE Fiber notworking

[Insprill]

.

[Insprill]

Nope, nothing

PSU failure maybe?

[Lurick]

21 minutes ago, Insprill. said:

Nope, nothing

PSU failure maybe?

Seems likely, but hard to say 100%

[Insprill]

Well, that's beautiful. Went from fiber not working, to the whole switch

 

you got any ideas on what i should do?

[Lurick]

13 minutes ago, Insprill. said:

Well, that's beautiful. Went from fiber not working, to the whole switch

 

you got any ideas on what i should do?

You could get a new PSU for like $30 off ebay. Just beware there are some that show for $30 and then are like $60 shipping but most are around the $20 to $30 mark with cheap or free shipping.

 

https://www.ebay.com/c/150040793

[Insprill]

ok I'll just pick that one up, and come back when i get it

[Insprill]

Ok i got the new power supply and the switch is working again. So where were we? Lol

[Lurick]

On 2/27/2020 at 4:17 PM, Insprill. said:

Ok i got the new power supply and the switch is working again. So where were we? Lol

I think last we were running commands to check on the output of the transceiver.

[Insprill]

right, so what do you want me to do as of right now?

[brwainer]

On 2/22/2020 at 10:34 AM, Lurick said:

Hmmm, ok, that should work just fine then.

Do a "show ip int bri | i Te" and a "show run int Te1/49" and "show run int Te1/50"

@Insprill.

[Insprill]

Ok sorry for late reply

show ip int bri | i Te

Spoiler

Switch#show ip int bri | i Te
TenGigabitEthernet1/49 unassigned      YES unset  down                  down

TenGigabitEthernet1/50 unassigned      YES unset  down                  down

 

show run int Te1/49

Spoiler

Switch#show run int Te1/49
Building configuration...

Current configuration : 40 bytes
!
interface TenGigabitEthernet1/49
end

 

show run int Te1/50

Spoiler

Switch#show run int Te1/50
Building configuration...

Current configuration : 40 bytes
!
interface TenGigabitEthernet1/50
end

 

[Robchil]

Just a question, what are those fibers connected to?. it has to be a compatible 10GB sfp namly 10GB LR.  if it's in another switch or pc. 

altho 10GB LR has 40km range so that would be a waste. 

 

another questions, you know that you have to deliver RX to TX and same the other way?  often you have to split the LC or SC connector and swap it around. unless it is cut 45degrees, then it's only 1 fiber anyway. but this seems like a 2 strand fiber setup. 

 

the other thing to note to get connection is that if it is connected switch to switch, you will have to have ports on both side set up the same, so you have vlan 1 static it seems on all ports, that is the most basic setup you can have, and not recomended in the networking world.

 

 

 

[Insprill]

2 hours ago, Robchil said:

Just a question, what are those fibers connected to?. it has to be a compatible 10GB sfp namly 10GB LR.  if it's in another switch or pc. 

altho 10GB LR has 40km range so that would be a waste. 

 

another questions, you know that you have to deliver RX to TX and same the other way?  often you have to split the LC or SC connector and swap it around. unless it is cut 45degrees, then it's only 1 fiber anyway. but this seems like a 2 strand fiber setup. 

 

the other thing to note to get connection is that if it is connected switch to switch, you will have to have ports on both side set up the same, so you have vlan 1 static it seems on all ports, that is the most basic setup you can have, and not recomended in the networking world.

 

 

 

You already split the SC ends and the TX RX are on the correct sides. I've tried it with this NIC:https://www.ebay.com/itm/SolarFlare-SFN5122F-Dual-Port-10Gb-s-PCI-E-2-0-x8-Enterprise-Sever-Adapter-NIC/283440227493?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 

and with a Dell PowerEdge r620s built in 10G SFP+ ports

[Robchil]

12 minutes ago, Insprill. said:

You already split the SC ends and the TX RX are on the correct sides. I've tried it with this NIC:https://www.ebay.com/itm/SolarFlare-SFN5122F-Dual-Port-10Gb-s-PCI-E-2-0-x8-Enterprise-Sever-Adapter-NIC/283440227493?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 

and with a Dell PowerEdge r620s built in 10G SFP+ ports

Ok, so you are going to use it on a Server, what OS is installed? 

And what is the distance from switch to server? 

 

[Robchil]

you get twinax that is actually copper cables with SFP+'s in the end https://www.ebay.com/itm/Cisco-SFP-H10GB-CU3M-3-Meter-10G-SFP-DAC-Twinax-Cable-37-0961-MNPA19-XTR/153742699444?hash=item23cbc76bb4:g:QIkAAOSwQ3Jd4Gog

 

I would use twinax if it is max 15 meter distance to servers. 

you get them up to 15 meters. depending on vendor, way cheaper than using 2 LR SFP+  SFP's can have eprom reburned to support cisco switches, and you need same type on both sides. so LR "long Range" is what you have in the cisco,  if you have SR "short Range" on the other side it will not work, and they have to use the same light/nm, (lightfrequency)

[Lurick]

43 minutes ago, Robchil said:

you get twinax that is actually copper cables with SFP+'s in the end https://www.ebay.com/itm/Cisco-SFP-H10GB-CU3M-3-Meter-10G-SFP-DAC-Twinax-Cable-37-0961-MNPA19-XTR/153742699444?hash=item23cbc76bb4:g:QIkAAOSwQ3Jd4Gog

 

I would use twinax if it is max 15 meter distance to servers. 

you get them up to 15 meters. depending on vendor, way cheaper than using 2 LR SFP+  SFP's can have eprom reburned to support cisco switches, and you need same type on both sides. so LR "long Range" is what you have in the cisco,  if you have SR "short Range" on the other side it will not work, and they have to use the same light/nm, (lightfrequency)

The switch OP has doesn't have SFP+ ports. The 10GE only has X2 ports for 10G which doesn't have a twinax variant.

[Robchil]

20 minutes ago, Lurick said:

The switch OP has doesn't have SFP+ ports. The 10GE only has X2 ports for 10G which doesn't have a twinax variant.

the NIC's he posted are SFP+ type twinax would fit in, the switch in contet had end of life in 2012.?. 

 

 

so you want to try to use the 2x 10GB optics to connect a pc... well you can try to use a singel mode patch cord SC to LC , and use  SFP+ that are LR with same light/nm it says that 2x 10GB modules are 1310nm .. never tested that since those are usually only for switch interconnect backbone. 

 

[Insprill]

On 2/22/2020 at 2:07 AM, Insprill. said:

This is the cable: https://www.amazon.com/gp/product/B001B1DV1C/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

 

This is the transceiver: https://www.ebay.com/itm/CISCO-compatible-SFP-10G-LR-WST-SFP-LR-C-Transceiver-Module-1-Year-Warranty/222684234830?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

 

I've tried them in 2 different NICs and the one built into a Dell r620

Its like 7ft away lmao. Cable is is 5 meters

[Insprill]

Bump

[schizznick]

@Insprill. Have you checked that both SFP's are using the same wavelength? I see some mentioned 1310nm above. Both Modules have to talk the same wavelength, if not they will not see each other. Think of it like trying to connect to 2.4Ghz Wifi with a 5Ghz radio. They will not work. 

[Lurick]

7 hours ago, Insprill. said:

Bump

Try this:

conf t

service unsupported-transceiver

 

then check and see if they come up

[Insprill]

Spoiler

Switch(config)#service unsupported-transceiver
Warning: When Cisco determines that a fault or defect can be traced to
the use of third-party transceivers installed by a customer or reseller,
then, at Cisco's discretion, Cisco may withhold support under warranty or
a Cisco support program. In the course of providing support for a Cisco
networking product Cisco may require that the end user install Cisco
transceivers if Cisco determines that removing third-party parts will
assist Cisco in diagnosing the cause of a support issue.

Switch(config)#
*Mar 10 08:30:51.084: Port Te1/49 X2 pluggable removed
*Mar 10 08:30:51.084: Port Te1/50 X2 pluggable removed
*Mar 10 08:30:51.384: %C4K_IOSINTF-5-TRANSCEIVERREMOVED: Slot=1 Port=49: Transceiver has been removed
*Mar 10 08:30:51.384: %C4K_IOSINTF-5-TRANSCEIVERREMOVED: Slot=1 Port=50: Transceiver has been removed
*Mar 10 08:30:53.000: Port Te1/49: X2 inserted: vendor: CISCO-EXCELIGHT, p/n: SDX4101FL-C1-M, s/n: ECL09330018 , DOM capable, the hole supports monitoring
*Mar 10 08:30:53.360: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=49: Transceiver has been inserted
*Mar 10 08:30:56.332: Port Te1/50: X2 inserted: vendor: CISCO-EXCELIGHT, p/n: SDX4101FL-C1-M, s/n: ECL09390064 , DOM capable, the hole supports monitoring
*Mar 10 08:30:56.340: %C4K_IOSINTF-5-TRANSCEIVERINSERTED: Slot=1 Port=50: Transceiver has been inserted

That's the output of that

Their both 1310nm wavelength

[beersykins]

37 minutes ago, Insprill. said:

p/n: SDX4101FL-C1-M

Bro those are fibre channel modules.

[Lurick]

30 minutes ago, beersykins said:

Bro those are fibre channel modules.

DOH! I missed that

[Insprill]

On 3/10/2020 at 1:08 PM, beersykins said:

Bro those are fibre channel modules.

Thank you so much man. Such a simple mistake  I got a pair of Finisar FTLX1442E2 and its working fine now. Thanks guys