Completion:
success
RTD OverThresholds number: 0
Attempts number:1 Drop operation number:0
Disconnect operation number:0 Operation timeout number:0
System busy operation number:0 Connection fail number:0
Operation sequence errors number:0 RTT Stats errors number:0
Destination ip address:3::3
Min/Max/Average Completion Time:
80/80/80
Sum/Square-Sum Completion Time: 80/6400
Last Good Probe Time: 2011-06-13 20:46:45.5
Lost packet ratio: 0 %
For an ICMP NQA test, the minimum, maximum, and average time for receiving ICMP Echo-
Reply packets is displayed, that is,
Min/Max/Average Completion Time
.
Lost packet ratio
is displayed, showing the link status. In this example, the packet loss ratio is 0%, indicating that
the link is running normally.
NOTE
If the
frequency
interval
command is configured for an NQA test instance,
testflag is active
is displayed.
If the
frequency
interval
command is not configured for an NQA test instance, the NQA test is performed
only once and
testflag is inactive
is displayed.
2.8 Configuring IPv4 Static Routes to Inherit the Costs of
Iterated Routes
This section describes how to configure IPv4 static routes to inherit the costs of iterated routes
and associate the priority of static routes with link status to improve network reliability.
Applicable Environment
Static routes inheriting the costs of iterated routes mainly apply to a scenario in which the Layer
2 Virtual Private Network (L2VPN) accesses the Layer 3 Virtual Private Network (L3VPN). In
such a scenario, the direct route cost is usually controlled by
Configuring an IPv4 direct route
to respond to L3VE interface status changes after a delay
or by
between the IPv4 direct route and PW status
. This will reduce downstream traffic loss during
the traffic switchback after the primary pseudo wire (PW) recovers.
However, on the network shown in
, the cell site gateway (CSG) is connected to
multiple base stations. These base stations usually use logical IP addresses to communicate with
access aggregation gateways (AGGs), so direct routes between base stations and AGGs cannot
be used to forward packets. In addition, AGGs do not have routes to the logical IP addresses of
the base stations. To address this problem, you must configure static routes on AGGs to forward
downstream traffic. As network administrators usually configure consecutive logical IP
addresses for base stations based on IP address planning, you must configure static routes to
specific base stations on AGGs. As shown in
, if the CSG-AGG1 link that bears the
primary PW recovers, AGG1 immediately advertises its static routes to radio network controller
site gateways (RSGs). RSGs then select these routes and downstream traffic is switched over to
Link A. However, AGG1 has not learned the MAC addresses of the base stations yet and the
primary PW is unavailable, so packets are dropped during the traffic switchback.
HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
2 IP Static Route Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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