[c-nsp] Need for large buffers for 1-to-1 forwarding?

[Mathias Sundman]

We help customers "light" fibers by terminating them with simple 
switches so the customer can have a monitored 1G or 10G circuit between 
two sites using dot1q-tunnel to transparently pass customers VLANs.

As we only provide the customer with 1 client port on the remote device, 
there is only one ingress port that needs to forward to one egress port. 
Is there a need for larger buffers for such a usage or should any switch 
with enough pps forwarding capacity do the job for even the most 
demanding traffic?

It's my believe that it is the client's own switch that aggregates 
multiple ingress ports that need large egress buffers on the interface 
connecting to our switch, right?

I'm also considering turning off mac-learning on the client's q-tunnel 
VLAN, as I can't why you would want to maintain a mac-table when you 
only have two ports to forward between, right? The client's switch 
should never be sending me anything unless he wants it to arrive at the 
remote site.

We're currently using 3560X switches for this as those were the smallest 
I found with Q-tunnel and 10G support. Any other recommendations?

Br // Mathias