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Configuration PFR for Internet Load Sharing

Junior Mateus
Level 1
Level 1

Hello Everybody

I´m a new fan of the PFR technologie, i´m some difficultie for set the learning mode.

Here is the scenario,

i have one 2 routers connecting to 4 ISP, each border router have 2 ISP or 2 External link

So my goal is to set a kind of load sharing for some application,

I need for example for my Http traffic to  be performed based on the best  External link

So i have this configuration on my PFR Master, but i´m not able to looking the Sh pfr master, the learn list doesn´t match anything

pfr master

logging

!

border 3.3.3.3 key-chain PFRVICTORIA

  interface FastEthernet0/1.212 external

  interface FastEthernet0/0 internal

  interface Tunnel10 external

!

border 10.30.21.1 key-chain PFRVICTORIA

  interface FastEthernet0/0 internal

  interface FastEthernet0/1.210 external

  interface FastEthernet0/1.211 external

ip access-list extended Defined_PFR_Appl

permit tcp any any eq www

permit tcp any any eq 443

permit tcp any any eq smtp

learn

  throughput

  delay

  periodic-interval 0

  monitor-period 1

  list seq 10 refname myApply

   traffic-class access-list Defined_PFR_App

   throughput

sh pfr master

RT-EDGE-INTERNET2#sh pfr master

OER state: ENABLED and ACTIVE

  Conn Status: SUCCESS, PORT: 3949

  Version: 3.0

  Number of Border routers: 2

  Number of Exits: 4

  Number of monitored prefixes: 345 (max 5000)

  Max prefixes: total 5000 learn 2500

  Prefix count: total 345, learn 345, cfg 0

  PBR Requirements met

  Nbar Status: Inactive

Border           Status   UP/DOWN             AuthFail  Version

3.3.3.3          ACTIVE   UP       00:38:50          0  3.0

10.30.21.1       ACTIVE   UP       00:38:52          0  3.0

Global Settings:

  max-range-utilization percent 20 recv 0

  mode route metric bgp local-pref 5000

  mode route metric static tag 5000

  trace probe delay 1000

  logging

  exit holddown time 60 secs, time remaining 0

Default Policy Settings:

  backoff 300 3000 300

  delay relative 50

  holddown 300

  periodic 0

  probe frequency 56

  number of jitter probe packets 100

  mode route observe

  mode monitor both

  mode select-exit good

  loss relative 10

  jitter threshold 20

  mos threshold 3.60 percent 30

  unreachable relative 50

  resolve delay priority 11 variance 20

  resolve range priority 12 variance 0

  resolve utilization priority 13 variance 20

Learn Settings:

  current state : STARTED

  time remaining in current state : 74 seconds

  throughput

  delay

  no inside bgp

  monitor-period 1

  periodic-interval 0

  aggregation-type prefix-length 24

  prefixes 100 appls 100

  expire after time 720

  Learn-List seq 10 refname myApply

    Configuration:

     Traffic-Class Access-list: Defined_PFR_App

     Aggregation-type: prefix-length 24

     Learn type: throughput

     Session count: 1000 Max count: 1000

     Status: INACTIVE

    Stats:

     Traffic-Class Count: 0

1 Reply 1

sathvik k v
Level 3
Level 3

Hi Junior,

An access-list under a pfr learn list is used to define the application signature rather than filtering . Applications can be identified either using port, protocol, dscp or any combination of it.we use the ACL to match the type of traffic and a prefix-list to match the destination prefix.

Refer : http://aitaseller.wordpress.com/2012/10/15/pfr-cisco-performance-routing/

Regards,

Sathvik

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