User manual
3.2.6.4PortConfiguration
This screen is for the configuration of the electrical Ethernet port (TP) and the optical port (FX). The options include enabling or disabling 
the port, setting auto or forced Ethernet mode, enabling 802.3X (flow control), and setting ingress and egress rate limiting. Note that rate 
limiting has a granularity of 64K so the rate can be set from 64k to 1000M in 64K steps. 
3.2.6.5Q‐in‐QConfiguration
The Q-in-Q function sets the S-tag or outer VLAN tag which is typically used by the service provider. For more explanation please see 
Section 3.1.6. 
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