Setting Maxt-Req - 3Com LANPLEX 6000 User Manual

Setting maxT-req

Top-Level Menu
system
display
station
ethernet
tvxLowerBound
path
fddi
tmaxLowerBound
mac
tokenring
maxTreq
port
bridge
backplane
ip
snmp
analyzer
script
logout
The maxT-Req attribute specifies the maximum time value of fddiMACT-Req
that will be used by any MAC that is configured onto this path. T-Req is the
value that a MAC bids during the claim process to determine a ring's
operational token rotation time, T_Opr. The lowest T-Req bid on the ring
becomes T_Opr.
When T_Opr is a low value, the token rotates more quickly, so token latency
is reduced. However, more of the ring's available bandwidth is used to
circulate the token. Higher values of T_Opr use less bandwidth circulating
the token, but increase token latency when the ring is saturated.
To set maxT-Req:
1 From the top level of the Administration Console, enter:
fddi path maxTreq
You are prompted for a slot related to the FDDI station.
2 Enter the slot(s).
You are prompted for a station, path, and value.
3 Enter the station.
If you are in multi-station mode, the stations available for you to choose are
those for which you have assigned MACs and ports.
4 Enter the path (
p
In single station mode, the primary, secondary, and local paths are available
for selection. In multi-station mode, the primary and secondary paths are
available for stations related only to the LMM+ (the secondary path is local
to the LMM+) and the primary path is available for all stations related to the
FCM, EFSM, and ESM.
5 Enter the new minimum time value.
The default value is 165000 micro-seconds (us)
See the following example:
Select station [1]:
Select path(s) (p,s,l|all) [p]:
Station 1 Primary - Enter new value [165000]:
= primary, = secondary,
s
Administering FDDI Paths
= local).
l
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