Allied Telesis AT-S62 - Manual (Page 30)

Chapter 1: Starting a Web Browser Management Session
30 Section I: Basic Operations
Ports 49R and 50R on the AT-8550GB and AT-8550SP Switches
This section applies to the 10/100/1000Base-T twisted pair ports 49R and
50R and the SFP and GBIC slots on the AT-8550GB and AT-8550SP
switches. Note the following when configuring these ports:
ˆ Twisted pair ports 49R and 50R change to the redundant status mode
when an SFP or GBIC module is installed and establishes a link with
its end node. An SFP or GBIC port is only active while it has a valid
link. At all other times the corresponding twisted pair port 49R or 50R
is the active port.
ˆ A twisted pair port and its corresponding SFP or GBIC module share
the same configuration settings, including port settings, VLAN
assignments, access control lists, and spanning tree. When an SFP or
GBIC module becomes active, it operates with the same settings as its
corresponding twisted pair port.
ˆ An exception is port speed: If you disable Auto-Negotiation on the
twisted pair port and set the speed and duplex mode manually, the
speed reverts to Auto-Negotiation when you install an SFP or GBIC
module and the module establishes a link with an end node.