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t1-reply-timer
seconds
t2-receive-ack-timer
seconds
ti-inactivity-timer
seconds
tw-transmit-window
seconds
n2-max_retry
The maximum number of retries by LLC protocol. For example, N2 is the
maximum number of times the LLC transmits an RR without receiving an
acknowledgment when the inactivity timer expires. Default is 8. Minimum is
1. Maximum is 127.
n3-frames-rcvd-before-ack
This value is used with the T2 timer to reduce acknowledgment traffic for
received I-frames. Set this counter to a specified value. Each time an
I-frame is received, this value is decremented. When this counter reaches 0
or the T2 timer expires, an acknowledgment is sent. Default is 1. Minimum
is 1. Maximum is 255.
nw-acks-to-inc-ww
This field is set to a default value of 1.
t1-reply-timer
This timer expires when the LLC fails to receive a required acknowledgment
or response from the other LLC station. When this timer expires, an RR is
sent with the poll bit set and T1 is started again. If the LLC receives no
response after the configured maximum number of retries (N2), the link
underneath is declared inoperative. Default is 1. Minimum is 1. Maximum is
256.
t2-receive-ack-timer
This timer is used to delay sending of an acknowledgment for a received
I-format frame. This timer is started when an I-frame is received and reset
when an acknowledgment is sent. If this timer expires, LLC2 sends an
acknowledgment as soon as possible. Set this value so that it is less than
that of T1. This insures that the remote LLC2 peer receives the delayed
acknowledgment before the T1 timer expires. Default is 1 (100 ms).
Minimum is 1. Maximum is 2560.
Note: If this timer is set to 1 (the default) it will not run (for example,
n3-frames-rcvd-before-ack=1).
ti-inactivity-timer
This timer expires when the LLC does not receive a frame for a specified
time period. When this timer expires the LLC transmits an RR until the
other LLC responds or the N2 timer expires. Default is 30 seconds.
Minimum is 1 second. Maximum is 256 seconds.
tw-transmit-window
Sets the maximum number of I-frames that can be sent before receiving an
RR. Assuming that the other end of the LLC session can actually receive
this many consecutive I-frames, and the router has enough heap memory to
keep copies of these frames until an acknowledgment is received,
increasing this value may increase the throughput. Default is 2. Minimum is
1. Maximum is 127.
Monitoring LLC
Chapter 17. Configuring and Monitoring LLC Interfaces 245