Ppp Lqm Lcp-Echo - H3C MSR810 Command Reference Manual

Predefined user roles
network-admin
Parameters
close-percentage close-percentage: Specifies the PPP LQM close percentage in the range of 0 to
100.
resume-percentage resume-percentage: Specifies the PPP LQM resume percentage in the range
of 0 to 100. The resume percentage must be greater than or equal to the close percentage. The
default resume percentage is equal to the close percentage.
Usage guidelines
If you enable PPP LQM on both sides of a PPP link, make sure both sides have the same PPP LQM
settings. Typically, there is no need to enable PPP LQM on both sides of a PPP link.
As a best practice, do not enable PPP LQM on a DDR dial-up link because DDR tears the link down
when the link is closed by LQM. Then LQM cannot send LQR packets to resume the link.
Examples
# Enable PPP LQM on S erial 2/1/0, and set the PPP LQM close percentage to 90 and r esume
percentage to 95.
<Sysname> system-view
[Sysname] interface serial 2/1/0
[Sysname-Serial2/1/0] ppp lqm close-percentage 90 resume-percentage 95

ppp lqm lcp-echo

Use ppp lqm lcp-echo to configure an interface to periodically send LCP echo packets when LQM
detects a low quality link.
Use undo ppp lqm lcp-echo to restore the default.
Syntax
ppp lqm lcp-echo [ packet size ] [ interval interval ]
undo ppp lqm lcp-echo
Default
An interface does not send LCP echo packets when LQM detects a low quality link.
Views
Interface view
Predefined user roles
network-admin
Parameters
packet size: Specifies the size added for the LCP echo packet, in the range of 128 to 1500 bytes.
interval interval: Specifies the interval for sending LCP echo packets, in the range of 1 to 10
seconds.
Usage guidelines
This feature can avoid PPP link flapping caused by loss of large LCP packets.
Examples
# Configure Serial2/1/0 to send a LCP echo packet every 1 second. The LCP echo packet is 1400
bytes larger than the original length.
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