Hitachi US7070447-001 사용자 설명서

FDDI Concepts

US7070447-001, Rev 01

12-7

Draft Level—Hitachi Confidential

Problem:

I’m having a communication problem with Platelike over
FDDI

Solution:

Use the following solutions:

Verify that you are running firmware version 1.3.28 or above.

In the CLI, enter the

‘vsys’

command. If not, upgrade

firmware on the switch. Refer to HiSpeed’s User Manual for
further instructions on how to upgrade the switch.

Verify that all IP addresses, subnet masks, and gateways are set
correctly on the VLANs and any attached devices.

Problem:

Cannot ping another VLAN over FDDI.

Solution:

Use the following solutions:

Verify that all IP addresses, subnet masks, and gateways are set
correctly on the VLANs and any attached devices.

Verify that all routes are learned using

‘vir’

. If not, ensure that

RIP is active on all VLANs.

Problem:

The FDDI port does not wrap or unwrap (go back into a ring) under
high traffic loads when the cable is removed/attached.

Solution:

This is a known issue and currently there is no fix is available. Resetting
the switch will re-initialize the switch back into the ring.

Problem:

FDDI performance is slower from FDDI through Ethernet than
from Ethernet through FDDI

Solution:

There is about 15% difference in the FDDI to Ethernet performance. This
is likely the result of employing ARL lookups in software, rather than
hardware. There are currently no plans to improve the FDDI through
Ethernet performance.

Problem:

I cannot ping to some stations via FDDI.

Solution:

There was a problem in the Hardware Type within the arp packet
generated by the HS150. This problem was fixed with 1.4.4. Upgrade
your switch the latest version of code. Refer to HiSpeed’s User Manual
on further instructions on how to upgrade the switch.