CCR1009-7G-1C-1S+ 2.5G Compatible?

Hardware MikroTik hardware general
1

Hello all :slight_smile:

Just for ask if the CCR1009-7G-1C-1S+ (fanless model) is compatible with SFP+ at 2.5G speed ?

Thanks in advance !

Kinds regards,

Davy

2

From product page:

100Mbps SFP support - this is our first device that supports 100BASE-LX/100BASE-SX/100BASE-BX fiber modules, as well as standard 1.25G SFP modules.

So, no.
1.25Gbps max for connection speed BUT with a maximum data speed of 1Gbps and when you look at the block diagram, you’ll see why.
There is only a 1Gbps bus from that connector to CPU.

3

Hi,

Thanks for fast reply.
And on the sfp+ cage ? can negociate to 2.5Gbps? (they are one SFP and one SFP+ on this model).

Thanks!

Davy

4

From product page / brochure / … it’s not clear.

When looking at SFP+ compatibility page, this device is listed but not clear either what speeds are supported.
But on the section about optical transceivers, it does mention max speed 1G.
So undecided. I’m inclined to think max is 1G but I could be wrong.

https://help.mikrotik.com/docs/spaces/ROS/pages/220233794/MikroTik+wired+interface+compatibility

5

CCR1009-7G-1C-1S+ is not compatible with 2.5G transceivers

SFP+/SFP28 interface compatibility with 2.5G transceivers
https://help.mikrotik.com/docs/spaces/ROS/pages/220233794/MikroTik+wired+interface+compatibility#MikroTikwiredinterfacecompatibility-SFP%2B%2FSFP28interfacecompatibilitywith2.5Gtransceivers

SFP+/SFP28 interface compatibility with 2.5G transceivers
The 2.5G link rate support is implemented since RouterOS v7.3. MikroTik devices with SFP+ and SFP28 interfaces that support 2.5G link rate require following settings to be set on both linked device interfaces.

Since RouterOS v7.12

/interface ethernet set sfp-sfpplus1 auto-negotiation=no speed=2.5G-baseX

Older RouterOS

/interface ethernet set sfp-sfpplus1 auto-negotiation=no speed=2.5Gbps full-duplex=yes
auto-negotiation disabled
port speed 2.5G
full-duplex
Devices which support 2.5G links in SFP/SFP+/SFP28 ports:

CRS3xx series switches - All SFP+ interfaces can be used in 2.5G mode if required.
CCR2004-1G-12S+2XS - All SFP+ and SFP28 interfaces can be used in 2.5G mode if required.
CCR2116-12G-4S+ - All SFP+ interfaces can be used in 2.5G mode if required.
CRS5xx series - All SFP28 interfaces can be used in 2.5G mode if required.
CCR2216-1G-12XS-2XQ - All SFP28 interfaces can be used in 2.5G mode if required.
RB5009 series - SFP+ interface can be used in 2.5G mode if required.
L009 series - SFP interface can be used in 2.5G mode if required.
L23 series - SFP interface can be used in 2.5G mode if required.
CSS610 series switches - All SFP+ interfaces can be used in 2.5G mode if required.
FTC11XG - SFP+1 interface can be used in 2.5G mode if required.

CCR1xxx series isn’t mentioned, and that makes sense because 2.5g was not known when that devices were developed a decade ago, only most recent devices supports it

6

Note however if you use something like a S+RJ10 in the sfp+ port,
it can negotiate 2.5G with remote end while sfp+ is running at 10G,
(so Mikrotik thinks it is running at 10G) it runs hot.

You will likely need some traffic shaping (queue) to limit outbound traffic to <2.5G.

7

No. 2.5G is not part of the 10GBase-X standard.

8

The optical data rate is 1.25Gbps as the PHY uses 8b/10b encoding - 1Gbps * 10 / 8 = 1.25Gbps . Each block of eight bits is encoded into ten bit symbols with no more than five consecutive zeros or ones, and on average the same number of zeros and ones to remove any DC component, there are also special ten bit codes for control and framing purposes.