Enabling Ppp Link Quality Control - HPE FlexNetwork MSR Series Comware 5 Layer 2 - Wan Access Configuration Manual

Step
Enter system view.
1.
Enter interface view.
2.
Configure the local end to
3.
send PFC requests, that is,
to include the PFC option
in its outbound LCP
negotiation requests.
•
Configuring how the local end handles the PFC requests received from the peer
Step
Enter system view.
1.
Enter interface view.
2.
Configure how the local
3.
end handles the PFC
requests received from the
peer.

Enabling PPP link quality control

PPP link quality control (LQC) monitors the quality (packet loss ratio and packet error ratio) of PPP
links (including those in MP bundles) in real time.
If PPP LQC is not enabled, each end of a PPP link sends keepalive packets to its peer periodically.
After you enable PPP LQC, Link Quality Reports (LQRs) packets replace keepalive packets to
monitor the link.
With PPP LQC enabled, the system monitors link quality by processing LQR packets received and
shuts down the link if the link quality drops below the PPP LQC close-percentage in two consecutive
LQR packet sending intervals. For a link shut down because the link quality drops below the PPP
LQC close-percentage, the system detects its link quality at an interval which is ten times the LQR
packet sending interval. When the link quality is higher than the PPP LQC resume-percentage in
three such consecutive intervals, the system brings up the link. A shut-down link must experience at
least 30 LQR packet sending intervals before it can go up again. If a long LQR packet sending
interval is specified, it takes a long time for the link to go up.
To enable PPP LQC:
Step
Enter system view.
1.
Command
system-view
interface interface-type
interface-number
ppp pfc local request
Command
system-view
interface interface-type
interface-number
•
Configure the local end to
accept PFC requests
received from the peer and
to perform PFC on frames
sent to the peer:
ppp pfc remote apply
•
Configure the local end to
accept PFC requests
received from the peer, but
not to perform PFC on
frames sent to the peer:
ppp pfc remote ignore
•
Configure the local end to
reject PFC requests sent
from the peer:
ppp pfc remote reject
Command
system-view
16
Remarks
N/A
N/A
By default, the local end does
not include the PFC option in its
outbound LCP negotiation
requests.
Remarks
N/A
N/A
Optional.
By default, the device accepts
PFC requests received from
the peer, but does not perform
PFC on frames sent to the
peer.
Remarks
N/A