Cisco 300 Series Administration Guide

Administration: Diagnostics
Displaying Optical Module Status
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 87
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If the port being tested is a Giga port, the Advanced Information block contains the
following information, which is refreshed each time you enter the page:
• Cable Length: Provides an estimate for the length.
• Pair—Cable wire pair being tested.
• Status—Wire pair status. Red indicates fault and Green indicates status OK.
• Channel—Cable channel indicating whether the wires are straight or cross-
over.
• Polarity—Indicates if automatic polarity detection and correction has been
activated for the wire pair.
• Pair Skew—Difference in delay between wire pairs.
NOTE TDR tests cannot be performed when the port speed is 10Mbit/Sec.
Displaying Optical Module Status
The Optical Module Status page displays the operating conditions reported by
the SFP (Small Form-factor Pluggable) transceiver. Some information might not be
available for SFPs that do not support the digital diagnostic monitoring standard
SFF-8472.
MSA-compatible SFPs
The following FE SFP (100Mbps) transceivers are supported:
• MFEBX1: 100BASE-BX-20U SFP transceiver for single-mode fiber, 1310 nm
wavelength, supports up to 20 km.
• MFEFX1: 100BASE-FX SFP transceiver, for multimode fiber, 1310 nm
wavelength, supports up to 2 km.
• MFELX1: 100BASE-LX SFP transceiver, for single-mode fiber, 1310 nm
wavelength, supports up to 10 km.
The following GE SFP (1000Mbps) transceivers are supported:
• MGBBX1: 1000BASE-BX-20U SFP transceiver, for single-mode fiber, 1310
nm wavelength, supports up to 40 km.

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48