Hello.
CCR-1009-8G-1S-1S+PC have a label “GROUP 1” for eth1-eth4. What does this mean ? Is there a difference in
opportunities between ports ?
Regards, Sergey.
eth1-eth4 are on a switch and can be configured to act as independent ports (but they will share the 1Gbps connection to the CPU).
If the ports are excluded from the switch, are they connected with each 1Gbps to CPU?
No, the CPU has a single 1Gbps port on the switch. “Excluding” a port from the switch essentially just creates an “internal” VLAN on the switch to carry traffic between the switch port and the CPU port (this is the same technique used by many switch vendors which allow ports to be switched to “routing” mode).
In other words, 1Gbps of “CPU” bandwidth is shared between ports 1-4, regardless of the switch configuration.
OK, so I understood the block diagram properly.
Ok, thanks. Are all other ports independent ?
Yep, ports 5-8 (as well as the two SFP ports) are direct-to-CPU ports.
Is one XAUI wasted with SFP instead of SFP+ ?
How is the switch connected to the CPU?
I think it is possible to connect the switch and the SFP to the same block, and that’s why the XAUI is not gratuitously wasted.
Does this mean the design could be expanded with one or two additional switches without degradation?
What is the maximum data rate of the SFP? 5Gbps each way simultaneously?