RB2011LS - with SFP transceiver (RJ45)

[honzam]

Hello. Today i tested rb2011LS (ROS 6.3) with SFP transceiver (RJ45)

http://www.alternetivo.cz/sfp-transceiver-1-25gbps-10base-t-100base-t-1000base-t-utp-cat5-100m-rj-45-0-az-70-c-3-3v-cis-komp-_d10926.html?action=setlng&lngid=1&curid=14&catalog=stoitemunit&

this transceiver work well on 1Gbit.

In SFP interface show NOT supported, but it works I tried UDP test → more then 850Mbit
With this trainsceiver you have 6x Gbit ethernet in rb2011LS

[honzam]

detail

[AlArenal]

The user internface doesn’t say the SFP is unsupported, it says that auto negotiation is unsupported. Have you tested auto negotiation by using 100 and 10 MBps equipment on the other side?

[honzam]

@AlArenal

The user internface doesn’t say the SFP is unsupported, it says that auto negotiation is unsupported. Have you tested auto negotiation by using 100 and 10 MBps equipment on the other side?

No i tested only 1Gbit. But, I can do test with 100Mbit network card

EDIT: with 100Mbit network card it NOT works. Autonegation On/OFF still not work. Only on 1Gbit network card works

[AlArenal]

If possible it should be enough just to reduce the speed on the other side by setting its interface speed to 100 or 10 (most switches or other MT devices could do that). If auto negotiation with the SFP works, it will adapt automatically.

[honzam]

@AlArenal

If possible it should be enough just to reduce the speed on the other side by setting its interface speed to 100 or 10 (most switches or other MT devices could do that). If auto negotiation with the SFP works, it will adapt automatically.

When I reduce speed on network card to 100Mbit. Then connection with SFP DON´T work.

But with 1Gbit netword card (or 1Gbit routerboard) works well

[janisk]

there are different kinds of these SFP-RJ45 modules, there are some that do support 10/100/1000 Mbps and other just work in 1000Mbps. Should check specification of the module itself.

[AlArenal]

@janisk

there are different kinds of these SFP-RJ45 modules, there are some that do support 10/100/1000 Mbps and other just work in 1000Mbps. Should check specification of the module itself.

Why do SFP-RJ45s work with 100Mbps but 100 / 155 Mbps Fiber-SFPs don’t work per se!?

[honzam]

@janisk

there are different kinds of these SFP-RJ45 modules, there are some that do support 10/100/1000 Mbps and other just work in 1000Mbps. Should check specification of the module itself.

Link is in first post. This modul is 10Mb/100Mb/1000Mbit but in rb2011LS works only on 1Gbit
If you want, I can send you supout.rif with this module in rb2011LS

[Kreacher]

Hello honzam,

Hello. Today i tested rb2011LS (ROS 6.3) with SFP transceiver (RJ45)

Thanks for sharing this information with us here!

[janisk]

@AlArenal

Why do SFP-RJ45s work with 100Mbps but 100 / 155 Mbps Fiber-SFPs don’t work per se!?

there is a difference at what speed module is “talking” to the router via SFP interface and how fast it is “talking” to other connected device via cable.

[AlArenal]

Hi janisk,

thanks for clarifying!

Is this something that could be changed in software (RouterOS) by tweaking the driver?
How about the CCR’s SFP-Ports - same behaviour as in the other routerboards (GB only)? (Can’t look at the specs because routerboard.com is currently in maintenance mode)