Data Channels and Switching Configuration
NetRunner W
AN User’s Manual
5-9
Sync Bandwidth Management
This feature permits you to budget the available link capacity for connections
through the network. By assigning an appropriate claim for bandwidth, you
prevent excessive overbooking of the link. When all link capacity is claimed,
subsequent connections will not be completed (remain in CIP state).
SYNC CHANNEL CHARACTERISTICS
SYNC CLAIMED BANDWIDTH
This feature is available on all protocols except TDM and on sync connections
where both sides are Release 4.0 or higher. In the event that the link does
not have enough bandwidth available for a requested sync connection, the
connection will not be completed
.
This feature is enabled in the Sync
Channel Characteristics Menu via the Sync Claimed Bandwidth option.
When you select that option, the following prompt will display:
ENTER SYNC CLAIMED BANDWIDTH [ 0]:
Enter the amount of bandwidth in the range of 164000 (bps) required for the
sync channel. The last number (ones column) rounds to the lowest 10; for
example: You configure 1001, the display will show 1000; when configured
for 1026, it will display 1020.
The port that initiates the connection is the one that sets the claimed
bandwidth value for the channel. This means that when you force connect
two ports from the Command Facility, the one which is input first (at the
from node/channel
prompt) is always the initiating port. In the case of
NETMan, the initiating port may be either port; therefore, it is recommended
that this parameter be set to the same value on each end of the channel. If
the feature is enabled, the sync channel will make a switched virtual circuit
(SVC) at the time of force connection; its path will be fixed through the
network. The feature can be disabled by entering a zero (0) at the prompt;
this is the default. If the feature is disabled, data will be sent via a datagram
which means the path of the connection may change due to network
congestion.
Should the port's configuration be altered while the port is force connected,
the new values will not take effect until the port is force connected
(reconnected) again.