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RS19
Participant

App Aware Routing Preference

I have the below Application aware routing policy.
It is applied to 4 VPN locations.
Any traffic which is matched with all_data_prefix will prefer to use metro-ethernet as preferred and silver as backup.
---------------------------------------------------------------------------------------------------------
 app-route-policy L1_L2_L3_L4_Policy
  vpn-list L1_L2_L3_L4
    sequence 1
     match
      destination-data-prefix-list all_data_prefix
     !
     action
      sla-class PacketLoss99  preferred-color metro-ethernet
      backup-sla-preferred-color silver
     !

all_data_prefix - 0.0.0.0/0
 
apply-policy
 site-list All_Sites
  app-route-policy L1_L2_L3_L4_Policy
------------------------------------------------------------------------------------------------
Requirement:
For L1, for a specfic route I want to have silver as primary & metro-ethernet as backup.
I am planning to configure as below. New app route policy.

 app-route-policy L1_Policy
  vpn-list L1
    sequence 1
     match
      destination-data-prefix-list specific_data_prefix
     !
     action
      sla-class PacketLoss99  preferred-color silver
      backup-sla-preferred-color metro-ethernet
     !

specific_data_prefix - 10.10.10.0/24

apply-policy
 site-list L1
  app-route-policy L1_Policy


So If i configure as above, will it work ?
My conern is that, since already 1 App route is configured which matches 0.0.0.0/0 data prefix, how will the new app route polcy will be enforced.

Is there any order of preference which needs to applied or configured.


2 REPLIES 2
RS19
Participant

The policy turned out to be like below.

app-route-policy __L1_L2_L3_L4_Preferre_2002384659
vpn-list L1_L2_L3_L4
sequence 1
match
destination-data-prefix-list all_data
!
action
sla-class PacketLoss99 preferred-color metro-ethernet
backup-sla-preferred-color silver
!
!
!
app-route-policy _L1_Preferred_color_internet
vpn-list L1
sequence 1
match
destination-data-prefix-list specific_data_prefix
!
action
sla-class PacketLoss99 preferred-color silver
backup-sla-preferred-color metro-ethernet
!
!


apply-policy
site-list ALL_Sites
app-route-policy _L1_L2_L3_L4_Preferre_2002384659
!
site-list L1
app-route-policy _L1_Preferred_color_internet
!

My concern is since 1st apply policy is applied to all sites & the data prefix matched as 0.0.0.0/0 all traffic will flow via Metro ethernet & the backup will be on Internet,

The 2nd policy which is applied only to L1 will it be effective ?
Since 1st policy is already matched will 2nd policy will be effective ?


Experts need your inputs.

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