Cisco Cisco SG200-26P 26-port Gigabit PoE Smart Switch インストールガイド

Unusually long access time: 

Due to the spanning tree loop detection logic, adding new connections 
might take 30 to 60 seconds for the affected interfaces and/or LAN to 
become operational.

This section describes the exterior of the smart switches including ports, 
LEDs, and connections. Not all models will have all of the features 
described.

RJ-45 Ethernet Ports—Use these ports to connect network devices, such 
as computers, printers, and access points, to the switch. 

SFP (if present)—The small form-factor pluggable (SFP) ports are 
connection points for modules, so the switch can link to other switches. 
These ports are also commonly referred to as miniGigaBit Interface 
Converter (miniGBIC) ports. The term SFP will be used in this guide.

• SFP ports are compatible with Cisco modules MGBT1, MGBSX1, 

MGBLH1, MGBLX1, MGBBX1, MFELX1, MFEFX1, and MFEBX1, as well as 
other brands of modules. 

• Some SFP interfaces are shared with one other RJ-45 port, called a 

combo port. When the SFP is active, the adjacent RJ-45 port is 
disabled. 

• The LEDs of the corresponding RJ-45 port flashes green to respond to 

the miniGBIC interface traffic.

System LED—(Green) Lights steady when the switch is powered on, and 
flashes when booting, performing self tests, and acquiring an IP address. If 
the LED flashes amber, the switch has detected a hardware failure.

LINK/ACT LED—(Green) Located on the left of the port. Lights steady 
when a link between the corresponding port and another device is 
detected. Flashes when the port is passing traffic. 

The System and LINK/ACT LEDs are on each model of the switch. 

The following LEDs are only present on switch models that have those 
capabilities: