Nortel BCM 3.7, Manual

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182 Universal T1 WAN (UTWAN)
N0008589 3.3
5 Press the TAB key to save your settings.
Fragmentation
Trigger Select FrameSize if you want Business Communications Manager to use the size of the packet
to decide if the packets need to be fragmented.
Select DelayTime if you want Business Communications Manager to use delay time to decide if
the packets need to be fragmented.
Frame Size This parameter is only available if you selected FrameSize for the Fragmentation Trigger
parameter.
Enter the maximum frame size in bytes. Any packets that have a frame size larger than the size
specified are fragmented.
Possible values are 160 to 800 bytes.
The default value is 256 bytes.
Delay Time This parameter is only available if you selected DelayTime for the Fragmentation Trigger
parameter.
Enter the maximum delay time, in milliseconds, for the packets. If the delay time exceeds this
value the packets are fragmented.
Possible values are 10 to 40 milliseconds.
The default value is 10.
Low Water Mark This is one of the parameters that controls the link layer queuing behavior for PPP when link layer
fragmentation is enabled.
Possible values are 1 to 7 .
The default value is 6.
Note : Nortel Networks highly recommends that you do not change the Low Water Mark from the
default value.
High Water Mark This is one of the parameters that Controls the link layer queuing behavior for PPP when link
layer fragmentation is enabled.
Possible values are 2 to 8 .
The default value is 7.
Note : Nortel Networks highly recommends that you do not change the High Water Mark from the
default value.
Note : The High Water Mark must be a larger than the Low Water Mark.
Table 24 PPP Parameters (Continued)
Attribute Description