H3C NQA 配置

如上图，XRV1的loopback0地址为10.255.255.1/32，XRV5的loopback0地址为10.255.255.5/32，整个网络环境运行OSPF协议，默认XRV1到XRV5路由负载，采用PBR后，强制让走XRV2-XRV4的链路，为保证XRV2-XRV4的链路故障后走XRV2-XRV3的链路，配置如下：

NQA配置：

#
nqa entry pbr pbr
type icmp-echo
destination ip 10.185.2.2
frequency 5
reaction 1 checked-element probe-fail threshold-type consecutive 5 action-type trigger-only
#
nqa schedule pbr pbr start-time now lifetime forever
#

PBR配置：

#
acl advanced 3000
 rule 0 permit ip source 10.255.255.1 0 destination 10.255.255.5 0
#

policy-based-route pbr permit node 10
if-match acl 3000
apply next-hop 10.185.2.2 track 1
#

interface GigabitEthernet0/0
port link-mode route
combo enable copper
ip address 10.201.1.2 255.255.255.252
ospf network-type p2p
ip policy-based-route pbr
#

 测试如下：

1）未调用策略路由时访问路径

2）调用策略路由时访问路径

3）模拟XRV2-XRV4的链路故障