3com 3031 Instruccion De Instalación

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Link Fragmentation and Interleaving on PPP 
981
requires that end to end delay should not exceed 100 to 150ms. Link Fragment 
and Interleave (LFI) divides the large data frame into small frames and then 
transmits them to the front of the transmission queue and inserts the small 
packets that are sensitive to delay between the fragments. In this way, the delay of 
small real-time packet is reduced and fragments can be reassembled at the 
destination. 
The link fragment and interleave configuration includes: 
Enable LFI 
Configure maximum time delay of LFI fragment 
Configure the bandwidth of the local interface on the interface 
E
nabling LFI 
Perform the following in the Virtual Template Interface View or the mp-group 
Interface View.
LFI is not enabled by default. 
Configuring Maximum 
Time Delay of LFI 
Fragment
 
The following command can be used to set the maximum time delay for 
transmitting an LFI fragment. 
Perform the following in the Virtual Template Interface View or the mp-group 
Interface View.
The default fragment delay is 10ms after LFI is enabled.
Configuring Bandwidth 
of the Interface
 
This command can configure the physical bandwidth binding to the MP links. The 
command indicates the available bandwidth of the active interface, providing the 
information of the QoS module but not the actual bandwidth binding the MP 
links.
Perform the following in the Interface View. 
The parameter 
Kilobits
 indicates the available bandwidth of the interface. It is in 
Kbps and in the range of 1 to 1000000.
Table 1066   Enabling LFI
Operation
Command
Enable LFI on Virtual Template interface
ppp mp lfi
Disable LFI on Virtual Template interface
undo ppp mp lfi
Table 1067   Configuring maximum time delay of LFI fragment
Operation
Command
Configure maximum time delay of LFI fragment
ppp mp lfi delay-per-frag time
Restore the default maximum time delay of LFI 
fragment
undo ppp mp lfi delay-per-frag
Table 1068   Configuring bandwidth of the interface
Operation
Command
Configure the bandwidth of the interface
qos max-bandwidth kilobits
Restore the default bandwidth 
undo qos max-bandwidth