User's Manual

Tsunami MP.11 2454-R, 5054-R, and 5054-R-LR Installation and Management
Chapter 7. Troubleshooting 128
• The upload or download directory is not correctly set
• The file name is not correct
Online Help Is Not Available
Online help is not available.
1. Make sure that the Help files are installed on your computer or server. Also see “Installing Documentation
and Software”
on page 16.
2. Verify whether the path of the help files in the Web Interface refers to the correct directory. See “Help”
on
page 118.
Changes Do Not Take Effect
Changes made in the Web Interface do not take effect:
1. Restart your Web browser. Log into the unit again and make changes. Reboot the unit when prompted to do
so.
2. Wait until the reboot is completed before accessing the unit again.
VLAN OPERATION ISSUES
Verifying Proper Operation of the VLAN Feature
The correct VLAN configuration can be verified by “pinging” wired hosts from both sides of the device and the
network switch. Traffic can be “sniffed” on the wired (Ethernet) network. Packets generated by hosts and viewed
on one of the backbones should contain IEEE 802.1Q compliant VLAN headers when in Transparent mode. The
VLAN ID in the headers should correspond to one of the VLAN Management IDs configured for the unit in Trunk
mode.
The correct VLAN assignment can be verified by pinging:
• The unit to ensure connectivity
• The switch to ensure VLAN properties
• Hosts past the switch to confirm the switch is functional
Ultimately, traffic can be “sniffed” on the Ethernet interface using third-party packages. Most problems can be
avoided by ensuring that 802.1Q compliant VLAN tags containing the proper VLAN ID have been inserted in the
bridged frames. The VLAN ID in the header should correspond to the assigned VLAN.
What if network traffic is being directed to a nonexistent host?
• All sessions are disconnected, traffic is lost, and a manual override is necessary.
• Workaround: You can configure the switch to mimic the nonexistent host.
TROUBLESHOOTING LINK PROBLEMS
While wireless networking emerges more and more, the number of wireless connections to networks grows every
day. The Tsunami MP.11 is one of the successful product families used by customers today who enjoy the day
after day high-speed, cost-effective connections. To successfully use the connections, technicians must be able
to troubleshoot the system effectively. This section gives hints on how a Tsunami MP.11 network could be
analyzed in the case of “no link,” a situation in which the customer thinks that the link is down because there is no
traffic being passed.
The four general reasons that a wireless link may not work are related to:
• Hardware