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jasin00

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connecting a cisco 3560 via fiber to another 3560

We've had some fiber installed for two new buildings. each building is going to be a seperate network. I configured two 3560's one for my main network .11 and one for the second network .12.
.11 came up just fine but .12 will not see the other 3560. i've had the fiber tested twice and it comes back clean. I've taken .12 and plugged it in directly to another 3560. and it still won't talk. so that means i have a config issue. I'm relativly new to cisco so any ideas?
Switches / Hubs

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jasin00
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mikebernhardt
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Try adding the command "speed nonegotiate" to the interface config on both sides and see if that helps. I am assuming that this fiber is connecting to gigabit SFPs?
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in addition, can you send result of "sh int g0/x" command for both swithes?
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jasin00

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ok here's that command for the two switches in question
.12.txt
.12-b.txt
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jasin00

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12 is a switch with mtrj connections. no ethernet. 12b is sc's  its single mode fiber all the way through. I've tried putting a blackbox media converter in place of 12b with no luck. 12 is connected to other devices via fiber
Both side nonegotiate config is not same. Please make same.

12
FastEthernet0/11 is down, line protocol is down (notconnect)
  Full-duplex, 100Mb/s, media type is 100BaseFX
  input flow-control is off, output flow-control is unsupported

12b
FastEthernet0/11 is down, line protocol is down (notconnect)
  Auto-duplex , Auto Speed , 100BaseTX/FX
 
SOLUTION
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jasin00

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.12 is mtrj with no media converters. there are no ethernet ports in that switch. all the fiber was run as single mode. 12b has sc connections and i've set the speed to 100. I cannot replace .12 because theres alot of critical equipment going through it right now.  i do have media converters i could connect though. i will try that in the morning
Switches / Hubs
Switches / Hubs

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

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