Page 97 of 101
DWG ID: 181-0101-00A
Date: 2003-09-26
the packets waiting to be digipeated will be subject to the same wait times as not-to-be-
digipeated packets awaiting transmission.
By subjecting “special” to-be-digipeated packets to a delay determined by slottime and
persist, it is more likely that to-be-digipeated packets of two or more stations in the same
vicinity would not collide. This may be good if one wants to guarantee that a digipeated
packet will “make it out” of its neighborhood but bad if one wishes to limit the number of
times a packet is redigipeated.
See also: dwait, persist, uidwait
UIFLOOD name[,n [,{ID|NOID}]
(name = 5 char max)(n=0-255)
default disabled,30,NOID
When a UI frame is received with a call in the to-be-digipeated field of the form ‘name’
x-y where x is a number (1-7) appended to ‘name’ and y is a ssid (1-7), the ssid is
decrement and the UI frame is digipeated without setting the H bit. When the packet is
digipeated, a checksum is formed over the source, destination, and data fields of the
packet. This checksum is kept for n seconds (0-255). If an incoming UI packet is eligible
for digipeating as above, but its checksum matches one of those being saved, the packet
is discarded (not digipeated). The buffer holds a maximum of 64 checksums. If the
optional parameter ID is selected, the MYCALL callsign is inserted in an additional
digipeater address field with its H bit set.
See also: uidwait
UNPROTO {call [VIA call1,call2..call8] | NONE}
default CQ
call = destination address (this is really just a “dummy” address, as no connection takes
place, people often put their name or CQ here)
call1 ... call8 = optional stations to be digipeated through. A maximum of 8 digipeat
addresses (callsigns or aliases) can be specified. This is referred to as a path.
Each callsign may also have an optional Secondary Station Identifier (SSID) specified as
-n, where n = 1 - 15. The digipeat callsigns are specified in the order in which they are to
relay transmitted packets. This command is used to set the digipeat and destination
address fields for packets sent in the unconnected (unprotocol) mode. Unproto packets do
not receive an acknowledgment and are not retried. They are sent as Unnumbered I-
frames <UI>. The digipeater list is also used for BEACON and ID packets. If UNPROTO
is “NONE”, no unconnected packets will be sent except for BEACON and ID. Setting
MONITOR ON can monitor unconnected packets sent from other units. If you are
connected, you must also set MCON ON.