me:

Hi

I have a MikroTik CCR1036 and used Cisco SFP module.
When conncet SFP Port From CCR1036 to Cisco 3750 do not link UP

I used last version RouterOS for CCR1036

--------------------------------------------------------------------

MikroTik support [Krisjanis]

Hello,

please upgrade your CCR to recently released v6.0 it includes some improvements
regarding optical link handshaking process. Report back on what results you get
with this version.

RouterOS download page:
http://www.mikrotik.com/download


Regards,
Krisjanis

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me:

Hi Krisjanis

I upgrade my CCR To RouterOS Version 6.0 but sfp port is down to cisco
or mikrotik display "link ok" but cisco sfp port is down and no transfer data
from mikrotik to cisco or cisco to mikrotik

-------------------------------------------------------------------------

MikroTik support [Krisjanis]

Hello,

in supout file I see that you have auto-negation disabled on SFP ports, please
enable it and then re-plug sfp modules in CCR. Check if you get link after you
have performed these actions.


Regards,
Krisjanis

-------------------------------------------------------------------------
me:

hello

when "no speed nonegotiate"
on cisco, mikrotik sfp was ok "link ok" (for enabled auto negotiation and disabled auto negotiation) but cisco LED is off and cisco sfp was down

Regards


------------------------------------------------------------------------
MikroTik support [Krisjanis]

Hello,

If I understood you correctly even with auto-negation turned "on" and modules
repluged on both sides Cisco switch does not turn on link light?


Regards,
Krisjanis


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me:


Hello

yes

in cisco sfp parameter ---------> speed nonegotiate
link is down (in mikrotik and cisco)

when cisco sfp parameter ----------> no speed nonegotiate
mikrotik (with enabled auto negotiation and disabled auto negotiation) link light is on but cisco link light off
and in mikrotik link up on 1Gbps but in cisco interface link is manualy down

Regards

-----------------------------------------------------------------------------
MikroTik support [Krisjanis]

Hello,

thank you for providing us with this information. We will check if we can
reproduce this problem on our local Cisco units with SFP ports. I will notify you
as soon as we have some updates on this problem.

Regards,
Krisjanis



plz help ..................

Have you tried using an SFP module that is not Cisco/Cisco-compatible (ie a generic module)? I have tested with a generic SFP on a CCR and not had any issues. Might also be worth trying to disable CDP on the port on the Cisco switch and make sure that if the port is in err-disable state to reset it or shut/no-shut the port to clear the error.