Performing Pings
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10
Select
Special Functions
from the Main Menu.
11
Select
Use TFTP to Update All Access Points
and press Enter, which generates the
following prompt:
“Are you sure (Y/N)?”
12
Type
y
. The
Telnet session ends at this point
.
The AP resets when the file transfer
and flash programming complete.
13
Telnet to the AP using its IP address.
14
Type the case-sensitive password at the password prompt, which generates the
Main Menu.
15
Verify the accuracy of the version number in the System Summary window.
16
Press
Ctrl+D
to end the Telnet session.
Performing Pings
A network node sends a ping packet to a wireless client or AP and waits for a
response. Use pings to evaluate signal strength between two stations. The other
station can exist on any AP interface. (This ping operates at the MAC level and not
at the Internet Control Message Protocol [ICMP] level.
No pings returned or fewer pings returned than sent can indicate a
communication problem between the AP and the non-network station.
To ping a station, follow the procedure below.
1
Select
Show Wireless Clients
from the Main Menu
.
2
Select
Regular
from the Show Wireless Clients window. The
Wireless Clients
window generates.
3
Press
Tab
to highlight the MAC address of the station to ping.
4
Press the
[F1]
key to select
Ping [F1]
This generates the Packet Ping Setup window.
5
Enter the number of Pings (1 to 539), the
Packet Length
in bytes (1 to 539), and
the Packet Data content in hex (0x00 to 0xFF).
6
Select
Start [CR]
to begin pinging.
The AP dynamically displays ping packets transmitted and received.
Extended Roaming
Using MD5
Authentication
You can achieve authentication by using the MD5 algorithm with a shared key
configured into the AP and its wireless client. MD5 is
a
message-digest algorithm
that takes an arbitrarily long message and computes a fixed-length (16 bytes) digest
version of the original message. You can think of the message-digest as a unique
fingerprint of the original message computed using a mathematical formula or
algorithm. The message-digest is the authentication checksum of a message from
a mobile wireless client to an AP during the Home Agent registration process. The
MD5 algorithm prevents a wireless client from impersonating an authenticated
wireless client.
