Chapter 6: Troubleshooting
Page 50
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LGC340A
6. Troubleshooting
If a fiber connection cannot be established, perform the following to make sure
that the fiber transceivers on the IE GIGA MC TX/SFP are not over/under
driving the fiber receivers:
1. Make sure the fiber wavelength on both connected devices match (i.e. both
are 1310 nm single-mode fiber).
2. Make sure the twisted-pair port speed on the IE GIGA MC TX/SFP matches
that of the end devices connected to the IE GIGA MC TX/SFP Configure
the IE GIGA MC TX/SFP and its link partner to Auto Negotiation or, if using
Force mode, be sure speed and duplex match.
3. IE GIGA MC TX/SFP allows the end user to assign a VLAN tag to all
management traffic (SNMP and telnet). It is important to understand that IF
using telnet or iView
2
to assign a VLAN tag to management traffic then as
soon as this setting is saved the connectivity will be lost until the PC
becomes a member of the VLAN which was assigned to management
traffic.
If a VLAN tag has been assigned to management traffic and the end user
cannot re-establish a connection to the device via iView
2
or telnet, directly
connect a PC to the device via the serial cable and review/modify the
changes made (reference section on serial port config).
Table of Contents
LGC340A
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Page 7
5.3.2
Port Configuration........................................................................ 39
5.3.3
Bandwidth .................................................................................... 40
5.3.4
Tables .......................................................................................... 40
5.3.5
VLAN ........................................................................................... 41
5.3.6
Advanced..................................................................................... 42
5.3.7
OAM AH....................................................................................... 42
5.3.8
Loopback Testing ........................................................................ 43
5.3.9
OAM CFM.................................................................................... 45
5.3.10
Agent Info .................................................................................... 48
6.
Troubleshooting.................................................................................... 50
7.
Contacting Black Box ........................................................................... 51
8.
Fiber Optic Cleaning Guidelines .......................................................... 52
9.
Electrostatic Discharge Precautions .................................................... 53
Glossary ............................................................................................................ 54
