Troubleshooting guide

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Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring Traffic Interception
Using Policy-Based Routing Interception
Step 3 Configure the route map to use IP SLA tracking instance number 1 to verify the availability of the
next-hop WAE (for example, the branch WAE named Edge-WAE1 that has an IP address of 1.1.1.100):
Edge-Router1(config-route-map)# set ip next-hop verify-availability 1.1.1.100 track 1
Note Enter the set ip next-hop verify-availability command for each route-map that has been
configured on this branch office edge router and on the data center’s core router that has also
been configured to use PBR to redirect traffic to WAEs.
Step 4 Configure the IP SLA tracking instance 1:
Edge-Router1(config-route-map)# exit
Edge-Router1(config)# ip sla 1
Edge-Router1(config-ip-sla)#
Step 5 Configure the router to echo Edge-WAE1 using the specified source interface:
Edge-Router1(config-ip-sla)# icmp-echo 1.1.1.100 source-interface FastEthernet 0/0.20
Step 6 Configure the router to perform the echo every 20 seconds:
Edge-Router1(config-ip-sla)# frequency 20
Edge-Router1(config-ip-sla)# exit
Step 7 Schedule the IP SLA tracking instance 1 to start immediately and to run continuously:
Edge-Router1(config)# ip sla schedule 1 life forever start-time now
Step 8 Configure the IP SLA tracking instance 1 to track the device, which is defined in the IP SLA tracking
instance 1:
Edge-Router1(config)# track 1 rtr 1
If you are configuring PBR and have multiple WAEs, and you are using Method 2 to verify PBR next-hop
availability of a WAE, you must configure a separate IP SLA per WAE and then run the track command
per IP SLA.
Method 3: Using IP SLAs to Verify WAE Operability Using TCP Connection Attempts
If the device that is configured for PBR is running the Cisco IOS software Release 12.4 or later and does
not see the WAE as a CDP neighbor, IP SLAs can be used to verify that the WAE is alive using TCP
connection attempts. IP SLAs can be used to monitor a WAE’s availability as the PBR next hop using
TCP connection attempts at a fixed interval of 60 seconds.
To verify PBR next-hop availability of a WAE, follow these steps:
Step 1 On the branch office router named Edge-Router1, enter route-map configuration mode for the route map
named WAAS-EDGE-LAN, which has been previously configured on this router:
Edge-Router1(config)# route-map WAAS-EDGE-LAN permit
Step 2 Configure the route map to use IP SLA tracking instance number 1 to verify the availability of the
next-hop WAE (the Edge WAE that has an IP address of 1.1.1.100):
Edge-Router1(config-route-map)# set ip next-hop verify-availability 1.1.1.100 track 1