Table of Contents
Advertisement
Combo Ports
The AT-FS980M/9, AT-FS980M/9PS, AT-FS980M/18, and
AT-FS980M/18PS switches have one or two pairs of combo ports. Each
combo port consists of one 10/100/1000Base-T twisted-pair port and one
slot for an SFP transceiver. The twisted-pair port of combo ports is
identified with the letter "R" for "Redundant" on the front panel of the
switch. The combo ports and SFP slots are listed in Table 5.
Switch
AT-FS980M/9 and
AT-FS980M/9PS
AT-FS980M/18 and
AT-FS980M/18PS
The combo ports have the guidelines listed here:
Only one port in a pair, either the twisted-pair port or a
corresponding SFP module, can be active at a time.
The twisted-pair port is the active port when its SFP slot is empty,
or when an SFP module is installed, but has not established a link
to an end node.
The twisted-pair port automatically changes to the redundant
status mode when an SFP module establishes a link with an end
node.
A twisted-pair port automatically transitions back to the active
status when the link is lost on the SFP module.
In nearly all cases, a twisted-pair port and an SFP module share
the same configuration settings, including port settings, VLAN
assignments, access control lists, and spanning tree.
An exception to the shared settings is port speed. If you disable
Auto-Negotiation on a twisted-pair port and set the speed and
duplex mode manually, the speed reverts to Auto-Negotiation
when an SFP module establishes a link with an end node.
FS980M Series Fast Ehternet Managed Switches Installation Guide
Table 5. Combo Ports
Combo Ports
Twisted-Pair Port
9R
17R
18R
SFP Slot
9
17
18
31
Advertisement
Table of Contents
