Cisco SR224T Administration Guide - Page 63

Managing Device Diagnostics Displaying Optical Module Status 7 If the port being tested is a Giga port, the Advanced Information block displays 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 crossover. • 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 Small Business 200 Series Smart Switch Administration Guide 64