Netopia 4000 Series, Руководство пользователя программного обеспечения

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2-10 Firmware User Guide
1. Select LMI Type (Link Management Type) and press Return. From the pop-up menu, highlight either ANSI
(Annex D) , CCITT (Annex A) , LMI , or None . The default is None . Press Return.
See “Frame Relay DLCI configuration” on page 2-11 for instructions.
Specifying the Link Management Type is the first step in configuring Frame Relay.
■ If you select an LMI Type (Link Management Type) other than None, the T391 option specifies the
number of seconds between the Status Enquir y messages. The default setting is 10.
■
The N391 option specifies the frequency of full status polls, in increments of the basic (T391) polling
cycle. The default setting is 6.
■
The N392 option specifies the maximum number of (link reliability, protocol, and sequence number)
error events that can occur within the N393 sliding window. If an N392 threshold is exceeded, the
switch declares the Netopia Router inactive. The default setting is 3.
■ The N393 option allows the user to specify the width of the sliding N392 monitored event window. The
default setting is 4.
2. Select Tx Injection Management and press Return. From the pop-up menu, highlight Standard if you want
the frames on your line that exceed the configured ser vice parameters to be dropped at the router,
Buffered if you want the frames on your line that exceed the link capacity to be delayed until the link is less
busy, or None if you want all of the frames on your line to be transmitted. Press Return.
Note: If you select None as the Tx Injection Management type, the three Tx Injection Management options
listed below will remain hidden. Go to step 4.
If you select Standard or Buffered as the Tx Injection Management type, then the Default CIR , Bc , and Be
values will appear (in the corresponding fields below the Tx Injection Management field) in order for you to
define the parameters of the management algorithm.
■ The Default CIR (CIR also referred to as Committed Information Rate) represents the average capacity
available to a given PVC (Permanent Vir tual Circuit) or DLCI (Data Link Connection Identifier). This set-
Frame Relay Configuration
LMI Type... ANSI (Annex D)
T391 (Polling Interval in secs): 10
N391 (Polls/Full Status Cycles): 6
N392 (Error Threshold): 3
N393 (Monitored Event Window): 4
Tx Injection Management... Standard
Default CIR: 64000
Default Bc: 64000
Default Be: 0
Congestion Management Enabled: No
Maximum Tx Frame Size: 1520
Return/Enter goes to new screen.
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