User's Manual

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Example: Setting the times of re-send as 12
int ethernet1/1
llc2 n2 12
7.3.7 Configuring the Size Of Window for Resending
The command is
Command Purpose
[
no
]
llc2 local-window packet-count
Used for controlling the maximum size of I frame send
(namely the size of window for resend) when I frame is
not confirmed. The command “no” can be used for
restoring to the default value. packet-count:The
maximum size of I frame send. The maximum is 127,
the minimum is 1 and the default is 7.
Configuration mode: Interface configuration
Notes:
When one end of LLC2 link sends data to the opposite end, it can only send a certain amount of
data before waiting for the acknowledgement of the opposite end. The command is used for setting
the maximum value. When the set value is too big, it may lead to the loss of data because the
opposite end is not able to receive all the data.
Example: Setting the size of send window as 12.
int ethernet1/1
llc2 local-window 12
7.3.8 Configuring the Size of Accumulated Data Packet
The command is
Command Purpose
[
no
]
llc2 holdqueue
[
packet-count
] Used for controlling the maximum local accumulated
size of data packet when I frame (the remote end is
busy) cannot be sent. The command “no” can be used
for restoring to the default value. packet-count:The
maximum size of data packets reserved by I frame
when I frame is not confirmed.
Configuration mode: Interface configuration
Notes:
When the opposite end is busy, one end of LLC2 link is not able to send data (I frame). All the data
shall be reserved before the busyness of the opposite end is cleared. But the reserved amount is
limited. The command is used for setting the data amount to be reserved.
Example: Setting maximum data amount to be reserved as 120.
int ethernet1/1
llc2 holdqueue 120
7.3.9 Setting the Acknowledgement Time-Delay
When an I-frame (information frame) is received, an acknowledgement frame shall be sent immediately. In
order to reduce the unnecessary acknowledgement, the acknowledgement can be delayed. If information
frame is sent, an information frame will be sent as an acknowledgement instead of acknowledge frame. When