admin@sonic:~$ sudo config interface speed Ethernet1 10000
admin@sonic:~$ sudo config interface fec Ethernet1 noneNow and then, we receive a question. “We need to connect our old cozy 1G copper infrastructure to a shiny brand-new 25G switch. How can we do it?”
As we all know, many 25G SFP28 do not directly support 1G speed—most modern switches are PHYless and support 10/25G only. Broadcom Trident3 boxes, such as Aurora 621, do support 1G directly.
So the easy (and expensive) answer is a 1/10G switch, such as Aurora 221, that will handle all your needs.
More cables to sort out, one more unit to manage – we want a better way!
What we need is these modules:
We got 1/10G and multi-rate 1/2.5/5/10G Base-TX SFP+ parts from Optech.
What’s next?
Setting the port speed to 10G and FEC to “none” will do the trick.
admin@sonic:~$ sudo config interface speed Ethernet1 10000
admin@sonic:~$ sudo config interface fec Ethernet1 noneNow let’s check the status:
admin@sonic:~$ sudo show interfaces status
Interface Lanes Speed MTU FEC Alias Vlan Oper Admin Type Asym PFC
----------- ----------- ------- ----- ----- ---------- ------ ------ ------- -------------- ----------
Ethernet1 1 10G 9100 none Ethernet1 routed up up SFP/SFP+/SFP28 N/AThe port is up!
Every 10G Base-TX module (or a multi-rate part) has a PHY inside. It connects to the ASIC at its full 10G speed, and the external connection can be at any supported speed.
Flexible copper connectivity up and running brings a lot of options to your data center infrastructure.
Now, we can connect servers with copper ports-only, wireless systems, legacy switches without SFP+ interfaces, etc.
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