sla

apdzzlzy

ipsla 100

    icmp-echo 1.1.1.2 source-ip 1.1.1.1

    timeout 1000           //超时时长-单位毫秒（1s=1000ms）

frequency3           //频率-单位秒（每3s钟发送一个探测包）

ipsla schedule 100 life forever start-time now

track1 ip sla 100

应用在路由上

iproute 0.0.0.0 0.0.0.0 1.1.1.2 track 1

应用在策略路由上

route-mapnexthop permit 20

matchip address 20

setip next-hop verify-availability 2.1.1.2 98 track 2

#showip sla statistics

IPSLAs Latest Operation Statistics

IPSLA operation id: 100

Type of operation: icmp-echo

        Latest RTT: 48milliseconds

Latest operation start time: *11:42:23.727 UTC Mon Jul 24 2017

Latest operation return code: OK

Number of successes: 38

Number of failures: 18

Operation time to live: Forever

故障出现后提示如下：

Jul 24 11:43:49.443: %TRACKING-5-STATE: 1 ip sla 100 stateUp->Down

故障恢复后提示如下：

*Jul 24 11:44:44.447: %TRACKING-5-STATE: 1 ip sla 100 stateDown->Up

ip route 0.0.0.0 0.0.0.0 1.1.1.2

ip route 0.0.0.0 0.0.0.0 2.1.1.2

access-list100 permit ip any any

route-mapnat1 permit 10  

  match ip address 100

  match ip next-hop 1.1.1.2

ipnat inside source route-map nat1 interface FastEthernet0/0 overload

route-map nat2 permit 10

match ip address 100

match ip next-hop2.1.1.2

ip nat inside source route-map nat2 interface Serial1/0   overload

ipsla 100

    icmp-echo 1.1.1.2 source-ip 1.1.1.1

    timeout 1000        

    frequency 3         

track1 ip sla 100

access-list 99 permit host3.3.3.3

route-map cisco permit 10  

match ip address 99     

setip next-hop verify-availability 1.1.1.2 1   track 1

  set ipnext-hop verify-availability 2.1.1.2 2 track 2

ipsla 200

    icmp-echo 2.1.1.2 source-ip 2.1.1.1

    timeout 1000        

    frequency 3         

track2 ip sla 200

access-list 98 permit host3.3.3.9

route-map cisco permit 20  

match ip address 98     

  set ipnext-hop verify-availability 2.1.1.2 1 track 2

setip next-hop verify-availability 1.1.1.2 2   track 1

feng5211

啥也不说了，楼主就是给力！