R2511-HP MSR Router Series Layer 2 - WAN Command Reference(V5)

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Usage guidelines
In dial-up application, you might need multiple links to carry services. In this case, you can set the
minimum number of PPP links that can be triggered simultaneously by a packet to obtain the minimum
bandwidth required.
When the minimum number of links required in an MP bundle is set to a non-zero value, MP dial-up does
not depend on traffic detection. Links that have been established will be removed when they time out
because no traffic is present.
After you change the minimum number of links required in an MP bundle, you must re-enable all the
physical ports (by using the shutdown and undo shutdown commands) assigned to the MP bundle for the
modification to take effect.
The min-bind-num argument cannot be greater than the maximum number of links allowed in an MP
bundle set with the ppp mp max-bind command.
Examples
# Set the minimum number of links required in an MP bundle to 4.
<Sysname> system-view
[Sysname] interface dialer 0
[Sysname-dialer0] ppp mp min-bind 4
Related commands
dialer threshold
ppp mp min-fragment
Use ppp mp min-fragment to set the minimum MP packet size for fragmentation.
Use undo ppp mp min-fragment to restore the default, or 128 bytes.
Syntax
ppp mp min-fragment size
undo ppp mp min-fragment
Views
Virtual template interface view, dialer interface view, MP-group interface view
Default command level
2: System level
Parameters
size: Specifies the minimum MP packet size for fragmentation, in the range of 128 to 1500 bytes. MP
outgoing packets smaller than this value will not be fragmented, but those larger than or equal to this
value will be fragmented.
Usage guidelines
If MP bundle is implemented through hardware (CPOS chip for example), the minimum MP packet size
for fragmentation varies with chips (the fragment size on certain chips can only be 128, 256, and 512
bytes). In this case, make sure the setting configured with the ppp mp min-fragment command conforms
to the hardware specifications for the MP bundle to be created and the sub-channel LCP link to be
established successfully.