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

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MP binding must be supported in the same way for all its member links, either in software or in
hardware.
You can switch between software support and hardware support by using one of the following methods:
• Remove links from MP binding, and change their MP binding support mode before adding them
again.
• Execute the shutdown command and then the undo shutdown command on the MP interface after
changing the MP binding support mode.
Examples
# Configure interface Serial 2/0 to operate in MP mode, and configure software support for MP
binding.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] ppp mp soft-binding
[Sysname-Serial2/0] ppp mp
ppp mp sort-buffer-size
Use ppp mp sort-buffer-size to configure the MP sort buffer size factor. The MP sort buffer size = the
number of channels in the current MP bundle × size. You can use the display ppp mp command to view
the member channels in an MP bundle. If the calculated MP sort buffer size is 20, the MP sort buffer can
sort 20 packets.
Use undo ppp mp sort-buffer-size to restore the default.
Syntax
ppp mp sort-buffer-size size
undo ppp mp sort-buffer-size
Default
The MP sort buffer size factor is 1.
Views
Virtual template interface view, MP-group interface view
Default command level
2: System level
Parameters
size: Specifies the MP sort buffer size factor in the range of 1 to 64.
Usage guidelines
When MP is used, the received packets might be out of order. The sort buffer is used to re-sort packets.
The sort buffer size is a trade-off between re-sorting effect and delay. A large sort buffer brings good
re-sorting effect but increases delay. For voice packets, the transmission delay should be minimized.
Examples
# Configure the MP sort buffer size factor as 64.
<Sysname> system-view
[Sysname] interface virtual-template 0
[Sysname-Virtual-Template0] ppp mp sort-buffer-size 64