Cisco 2960 SFP <—> FMC setup

[kerisabe]

Tried hookin up the switch (cisco 2960 48tc) to my Airport Extreme via its SFP 1 port using tplink mc220L , got the lights through the lc-lc fiber cable but couldnt get the mac to show “connected to ethernet” it keeps saying the ethernet cable is unplugged. Please help!

[kerisabe]

20 minutes ago, charlesphoto said:

First try power cycling everything from modem forward.

thanks @charlesphoto will try and do that and will get back to you. 
 

also, it says on my mac, the ethernet is setting its own IP

[kerisabe]

6 hours ago, charlesphoto said:

 

Are you 100% sure the switch has been reset to factory default? And if you have the Airport Extreme set up to give out IP's vs the cable modem/router, then the switch has to go after the AP not before it (that's how mine is set up modem>AP>2960). Be sure you have the incoming and outgoing cables on the AP correct (Wan and Lan). 

to answer your question no, the switch hasnt been reset to factory default. Is there a manual way of doin it? And yes it is located after the airport express, tplink mc220L then the switch via fiber optic. 

[kerisabe]

4 minutes ago, plissken said:

 

On Cisco go to console mode (enable then  conf t) and issue 'erase start' and confirm.

is it possible to go to console mode without havin the console cable? Just by directly connecting an ethernet cable to it and my mac? 

[kerisabe]

15 minutes ago, plissken said:

The only way to do that is if you have either a loopback interface or you have a VLAN setup and SVI (Switched Virtual Interface) with IP on it.  THEN you have to have a port on the switch placed into that vlan:

 

SW(Config)# Vlan 10 *creates a vlan*

SW(Config)# int vlan 10 *creates a virtual host on that vlan*

SW(INT-Vlan)# Ip add 192.168.0.254 255.255.255.0 *assigns the virtual host an IP*

SW(INT-Vlan)#exit

SW(Config) int g0/1 

SW(Int)# switchport mode access *makes sure the port is in access or Layer 2 mode*

SW(Int)# Switchport access vlan 10 *places the port into Vlan 10*

SW(Int)# exit

Sw(config)# copy ru st *saves the config to flash memory on the switch*

 

You have to have a console cable. They are $12.

 

Plug in your computer to the specified port, assign it an ip address of 192.168.0.1 255.255.255.0 and you should be able to ping 192.168.0.254.  You will be able to manage via telnet at this point. 

Thank you @plissken for the detailed info but this is a bit overwhelming since this is my first time touching these things. And is it possible to do a hard reset physically by just the unit itself? 

[kerisabe]

10 hours ago, plissken said:

 

You can hard reset, but you CAN NOT manage a Cisco switch with factory defaults W/O a console cable. It won't have an IP address. 

 

That's why they put a console port on it.

 

Look on the sticker and post the exact model #. 

 

I can even build a config for you based on what you want to accomplish, PM it to you and you can copy/paste. Or I can email you the startup config file and you can copy it to flash. But you are going to need a console cable. 

Thank you so much @plissken so the model no is WS-C2960-48TC-L . Does the console cable connects w a mac? It looks like it needs a serial plug? So i guess i need to find a thunderbolt-serial adaptor? 
 

so today i went out to purchase a WS-C2960-8TC-S. I wanted to try it since it has no fan. Managed to hold the mode button for 10s to reset it. Connected the fiber optic to the sfp port and my ethernet to my mac and it worked. For some reason i think the WS-C2960-48TC-L sounds more open in my system?? Which is weird since its got that noisy fan and also when i had it hooked up i was running ethernet cable from my airport extreme to it, no fiber optic. 
 

it just doesnt make sense. 

[kerisabe]

41 minutes ago, plissken said:

 

Sounds like the new switch had everything to defaults including only the default vlan 1 🙂

 

What Mac do you have? The link Iprovided was for a USB to Serial Adapter.

@plissken A macbook pro with usb and thunderbolt ports. 

[kerisabe]

16 minutes ago, TubeMan said:

NO

Express set is always available on 2960 series,

with ip 10.0.0.1 on port 1

will give it a try tomorrow thanks @TubeMan

 

i just checked the user guide, i just read that the switch actually radiates alot of RFI. And actually with the first switch (48port tc) ive wrapped the unit with copper tape and grounded the tape and the one today (8port tc) i havent done this might also be the reason for the “more closed sound” and also like what @charlesphoto said regarding the diff build, age, os etc of the unit.

 

will have a try with express setup tomorrow, crossing my fingers, 

[kerisabe]

What do i have to do in the express setup? 

[kerisabe]

10 minutes ago, TubeMan said:

" , i just read that the switch actually radiates alot of RFI "

 

where have you read that ??

 

 

https://www.cisco.com/c/dam/en/us/td/docs/switches/lan/catalyst2960/hardware/quick/guide/9368.pdf

 

[kerisabe]

Btw has anyone here tried changing the smps internal psu into a linear psu or battery psu? And how significant is the change? 

[kerisabe]

Ok the sfp port on the 48 port switch works now for some reason. Now i just set the 8port switch to receive the first signal from the router, then the ethernet from 8tc goes to the 48tc then from the 48tc via its sfp port to tplink mc220ml, it sounds really good. The “air” is back by putting the 48tc before the tplink. Thanks for your help everyone much appreciated. Time to enjoy some music. 

[kerisabe]

3 hours ago, plissken said:

If people are interested I can make a video tutorial on what we've been talking about.

would be very interested. 🙏

[kerisabe]

@plissken pls take ur time in the mean time my console cable (usb - rj45) is still on its way. 
 

ive found that having the 48tc converting fiber (with clean isolated mains) , and the ethernet to my mac produces the best sound. So now the 8tc-s is used to convert ethernet from ethernet (airport extreme)  to fiber in the other room then fiber all the way to listening room. 
 

im going to try the tplink mc220L with linear psu for ethernet-fiber conversion today, and see if there is a diff.