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SFP+ (if present)—The small form-factor pluggable plus (SFP+) are
connection points for modules so that the switch can link to other switches.
These ports are also commonly referred to as mini 10GigaBit Interface
Converter ports. The term SFP+ will be used in this guide.
• The SFP+ ports are compatible with Cisco modules MGBSX1, MGBLH1,
MGBT1, MGBLX1, MGBBX1, as well as other brands of modules.
• The Cisco SFP+ 10G optical modules that are supported in the Cisco
550XG series switches are: SFP-10G-SR, SFP-10G-LRM, and SFP-10G-
LR.
• The Cisco SFP+ Copper Cable modules for stacking that are supported
in the Cisco 550XG series switches are: SFP-H10GB-CU1M, SFP-
H10GB-CU3M, and SFP-H10GB-CU5M.
• The SFP+ port is a combination port, shared with one other RJ-45 port.
When the SFP+ is active, the adjacent RJ-45 port is disabled.
• The LEDs of the shared RJ-45 port light to respond to the SFP+ port
traffic.
OOB—The Out of Band (OOB) port is a CPU's Ethernet port that can be
used only as a management interface. Bridging between the OOB port and
the in-band Layer 2 interface is not supported.
Front Panel LEDs
RPS—(Green) Lights steady when the switch is ready and applicable for
power backup through the Cisco Redundant Power System 2300
(RPS2300), blinking when the power backing up is in process. If the LED
flashes Amber, the Cisco RPS2300 is used for other switch.
Fan—(Green) Lights steady when the cooling fan is operational. Flashes
Amber when both two fans have failures.
Master—(Green) Lights steady when the switch is a stack master.
System—(Green) Lights steady when the switch is powered on, and
flashes when booting, performing self-tests, or acquiring an IP address. If
the LED flashes Amber, the switch has detected a hardware failure, a
firmware failure, and/or a configuration file error.
Stack ID—(Green) Lights steady when the switch is stacked and the
corresponding number indicates its Stack ID. When a switch has a Stack ID
greater than 4, a combination of the LEDs will light up to add up to the
Stack ID. For example, Stack ID #5 is LED#1 and LED#4, Stack ID #8 will
show LED#1, LED#3 and LED#4.
LINK/ACT—(Green) Located on the left of each port. The light is steady
when a link between the corresponding port and another device is
detected. Flashes when the port is passing traffic.
10
Cisco 550XG Series 10G Stackable Switches Quick Start Guide
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