User`s guide

4 - 8 Ethernet or Token Ring Bridge
On an ethernet LAN, the data portion of a frame may be in one of two
formats: DIX or DSAP/SSAP. The two formats differ both in packet size
specifications and in the manner of heading, or starting, the data portion.
An 802 wireless LAN requires packets to start with the DSAP/SSAP for-
mat and therefore must provide a method of conversion. DSAP/SSAP
packet types are easily converted since the header is already in the
required style. DIX packet types present more of a problem since there
are many different formats and no standard conversion method.
Aironet's 802.1H conversion protocol accommodates both DIX and
DSAP/SSAP packet types. In an 802.1H conversion, DIX type packets
are prepended with a header that mimics the DSAP/SSAP header. In an
Aironet infrastructure, this header style is not used by any wired ether-
net nodes so the remote radio node is always able to accurately recon-
vert the packet.
Using the Configuration Radio Install Menu
The options in this menu can be used to determine system performance
on individual nodes as well as individual node radio performance.
Running a Link Test (Linktest)
The linktest option is used to test the transmission quality between
Ethernet or Token Ring Bridge nodes and other nodes on the radio
network.
A link test sends special control packets to a specified destination which
in turn echoes the packets back to the source. Each control packet sent
has a sequence number that allows the sender to know whether packets
were lost either on the way to the destination or on the way back to the
source node.
Configuration Radio Install Menu
Option Value Description
1 - Linktest [ menu ] - Run a link test
2 - Header - Test radio header sizes
3 - Strength - Run a signal strength test
Enter an option number or name, Ò=Ó main menu, <ESC> previous menu
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