100Base-T And 1000Base-T Cables; Sfp, Xfp, And Gbic Cables; Troubleshooting Flash Or Pcmcia Cards - Avaya 8800 Troubleshooting Manual

100BASE-T and 1000BASE-T cables

The 100 Mbit/s ports and 1 Gbit/s ports use Category 5 UTP cabling only. Category 5 UTP
cable is a two-pair cable. To minimize crosstalk noise, maintain the twist ratio of the cable up
to the point of termination; untwist at any termination cannot exceed 0.5 in. (1.27 cm).

SFP, XFP, and GBIC cables

Cables for the optical transceivers vary depending on the specific device type. For information
about the cable requirements for SFPs, XFPs, and GBICs, see Avaya Ethernet Routing Switch
8800/8600 Installation — SFPs, XFPs, GBICs, and OADM Hardware Components,
NN46205-320.

Troubleshooting flash or PCMCIA cards

For an external flash or PCMCIA card, the most common source of errors is physically
removing the card before it is synchronized. Do not remove the external compact flash or the
PCMCIA before it is synchronized. To guarantee the external memory is in a consistent state
before you remove it, use one of the following commands:
• pcmcia-stop (on 8692 SF/CPU)
• dos-stop /pcmcia (on 8895 SF/CPU)
Back up all configurations, as all files are lost if the card is corrupted.
To troubleshoot the onboard flash device, or the external flash or PCMCIA devices, use the
following procedure:
1. To verify the format of the file system on a flash or PCMCIA device, use the following
2. To correct any format errors on the device, use the same command with the repair
3. If the repair is not successful, reformat the device with the following command. This
Troubleshooting
command:
dos-chkdsk <device>
option. This command erases any data on the device.
dos-chkdsk <device> repair
This may or may not be correct the problem.
command erases any data on the device.
dos-format <device>
Troubleshooting flash or PCMCIA cards
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