OeR / Pfr

Optimized edge Routing, di cisco ini disebut Pfr. Salah satu cara memindahkan link dengan adanya collision di jaringan yang dilalui oleh data nantinya.

conf R1 :

hostname R1
!
boot-start-marker
boot-end-marker
!
!
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
key chain KC_OER
key 1
key-string CISCO
!
!
oer master
logging
!
border 150.1.2.2 key-chain KC_OER
interface FastEthernet0/1 internal
interface FastEthernet0/0 external
!
border 150.1.3.3 key-chain KC_OER
interface FastEthernet0/1 internal
interface FastEthernet0/0 external
!
learn
throughput
delay
periodic-interval 1
monitor-period 2
aggregation-type prefix-length 32
no max range receive
backoff 90 180
mode route control
mode route metric static tag 777
mode select-exit best
resolve delay priority 1 variance 1
resolve utilization priority 2 variance 1
resolve loss priority 3 variance 1
resolve range priority 4
!
!
!
!
!
username admin privilege 15 password 0 admin
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 150.1.1.1 255.255.255.0
ip flow monitor MYMONITOR input
!
interface FastEthernet0/0
ip address 155.1.12.1 255.255.255.0
ip flow monitor MYMONITOR input
duplex a
*Mar 1 01:39:39.475: %OER_MC-5-NOTICE: Range OOP BR 150.1.2.2, i/f Fa0/0, percent 100
*Mar 1 01:39:39.479: %OER_MC-5-NOTICE: Load OOP BR 150.1.2.2, i/f Fa0/0, load 0 policy 5
*Mar 1 01:39:39.479: %OER_MC-5-NOTICE: Exit 150.1.2.2 intf Fa0/0 OOP, Tx BW 5, Rx BW 0, Tx Load 100, Rx Load 0uto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
ip address 155.1.13.1 255.255.255.0
ip flow monitor MYMONITOR input
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
interface Serial0/2
no ip address
shutdown
clock rate 2000000
!
router ospf 1
log-adjacency-changes
network 150.1.1.1 0.0.0.0 area 0
network 155.1.12.1 0.0.0.0 area 0
network 155.1.13.1 0.0.0.0 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
ip sla 1
udp-jitter 4.2.2.2 17000 source-ip 150.1.1.1 source-port 17000 codec g729a
timeout 700
frequency 1
ip sla schedule 1 life forever start-time now
ip sla 2
icmp-echo 100.100.100.100 source-interface Loopback0
timeout 900
frequency 1
ip sla schedule 2 life forever start-time now
ip sla 3
tcp-connect 200.200.200.200 5000 source-ip 150.1.1.1
timeout 1500
frequency 2
ip sla schedule 3 life forever start-time now
!
!
!
!
!
!
control-plane


R2 :

hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
key chain KC_OER
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
oer border
logging
local Loopback0
master 150.1.1.1 key-chain KC_OER
active-probe address source interface Loopback0
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 150.1.2.2 255.255.255.0
!
interface FastEthernet0/0
bandwidth 5
ip address 222.165.222.73 255.255.255.248
delay 1000000
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 155.1.12.2 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
redistribute static metric-type 1 subnets
network 150.1.2.2 0.0.0.0 area 0
network 155.1.12.2 0.0.0.0 area 0
network 222.165.222.73 0.0.0.0 area 0
default-information originate metric-type 1
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 222.165.222.78

R3 :

hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
key chain KC_OER
key 1
key-string CISCO
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
oer border
logging
local Loopback0
master 150.1.1.1 key-chain KC_OER
active-probe address source interface Loopback0
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
interface Loopback0
ip address 150.1.3.3 255.255.255.0
!
interface FastEthernet0/0
bandwidth 512
ip address 202.72.212.180 255.255.255.240
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 155.1.13.3 255.255.255.0
duplex auto
speed auto
!
router ospf 1
log-adjacency-changes
redistribute static metric-type 1 subnets
network 150.1.3.3 0.0.0.0 area 0
network 155.1.13.3 0.0.0.0 area 0
network 202.72.212.180 0.0.0.0 area 0
default-information originate metric-type 1
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 202.72.212.177


ISP :

hostname ISP
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
archive
log config
hidekeys
!
!
interface FastEthernet0/0
ip address 222.165.222.78 255.255.255.248
duplex auto
speed auto
!
interface Serial0/0
bandwidth 128
ip address 200.1.1.0 255.255.255.254
clock rate 128000
!
interface FastEthernet0/1
ip address 202.72.212.177 255.255.255.240
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router rip
version 2
passive-interface FastEthernet0/0
passive-interface FastEthernet0/1
network 200.1.1.0
network 202.72.212.0
network 222.165.222.0
default-information originate
no auto-summary
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 222.165.222.73
ip route 0.0.0.0 0.0.0.0 202.72.212.180


Router INET :

hostname INET
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
archive
log config
hidekeys
!
!
interface Loopback0
ip address 100.100.100.100 255.255.255.255
!
interface Loopback1
ip address 200.200.200.200 255.255.255.255
!
interface Loopback2
ip address 4.2.2.2 255.255.255.255
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
bandwidth 128
ip address 200.1.1.1 255.255.255.254
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router rip
version 2
network 4.0.0.0
network 100.0.0.0
network 200.1.1.0
network 200.200.200.0
no auto-summary
!
ip forward-protocol nd



---------------------------------

Result :

*Mar 1 01:44:33.563: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/1 Admin Down
*Mar 1 01:44:33.563: %OER_MC-5-NOTICE: BR 150.1.3.3 Inactive
*Mar 1 01:44:33.567: %OER_MC-5-NOTICE: Uncontrol prefixes, Clear exit, BR 150.1.3.3 i/f Fa0/0
*Mar 1 01:44:37.991: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/1 UP
*Mar 1 01:44:37.991: %OER_MC-5-NOTICE: BR 150.1.3.3 Active
*Mar 1 01:44:38.003: %OER_MC-5-NOTICE: BR 150.1.3.3 DOWN
*Mar 1 01:44:38.003: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/1 Unverified
*Mar 1 01:44:38.007: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/0 Unverified
*Mar 1 01:44:38.011: %OER_MC-5-NOTICE: Uncontrol prefixes, Clear exit, BR 150.1.3.3 i/f Fa0/0
*Mar 1 01:44:38.031: %OER_MC-5-NOTICE: Uncontrol prefixes, Exit down, BR 150.1.3.3 i/f Fa0/0
*Mar 1 01:44:41.031: %OER_MC-5-NOTICE: BR 150.1.2.2 UP
*Mar 1 01:44:41.211: %OER_MC-5-NOTICE: BR 150.1.2.2 IF Fa0/1 UP
*Mar 1 01:44:41.391: %OER_MC-5-NOTICE: BR 150.1.2.2 IF Fa0/0 UP
*Mar 1 01:44:41.395: %OER_MC-5-NOTICE: BR 150.1.2.2 Active
*Mar 1 01:44:42.847: %OER_MC-5-NOTICE: BR 150.1.3.3 UP
*Mar 1 01:44:43.359: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/1 UP
*Mar 1 01:44:43.579: %OER_MC-5-NOTICE: BR 150.1.3.3 IF Fa0/0 UP
*Mar 1 01:44:43.583: %OER_MC-5-NOTICE: BR 150.1.3.3 Active
*Mar 1 01:44:43.587: %OER_MC-5-NOTICE: MC Active

untuk router 2 :

*Mar 1 01:45:28.283: %OER_MC-5-NOTICE: BR 150.1.2.2 UP
*Mar 1 01:45:28.455: %OER_MC-5-NOTICE: BR 150.1.2.2 IF Fa0/1 UP
*Mar 1 01:45:28.683: %OER_MC-5-NOTICE: BR 150.1.2.2 IF Fa0/0 UP
*Mar 1 01:45:28.687: %OER_MC-5-NOTICE: BR 150.1.2.2 Active
*Mar 1 01:45:28.687: %OER_MC-5-NOTICE: MC Active

R1#sh oer master
OER state: ENABLED and ACTIVE
Conn Status: SUCCESS, PORT: 3949
Version: 2.1
Number of Border routers: 2
Number of Exits: 2
Number of monitored prefixes: 0 (max 5000)
Max prefixes: total 5000 learn 2500
Prefix count: total 0, learn 0, cfg 0

Border Status UP/DOWN AuthFail Version
150.1.3.3 ACTIVE UP 00:00:18 0 2.1
150.1.2.2 ACTIVE UP 00:00:20 0 2.1

Global Settings:
max-range-utilization percent 20 recv 0
mode route metric bgp local-pref 5000
mode route metric static tag 777
trace probe delay 1000
logging

Default Policy Settings:
backoff 90 180 90
delay relative 50
holddown 300
periodic 0
probe frequency 56
mode route control
mode monitor both
mode select-exit best
loss relative 10
jitter threshold 20
mos threshold 3.60 percent 30
unreachable relative 50
resolve delay priority 1 variance 1
resolve utilization priority 2 variance 1
resolve loss priority 3 variance 1
resolve range priority 4 variance 0

Learn Settings:
current state : RETRY
time remaining in current state : 12 seconds
throughput
delay
no inside bgp
no protocol
monitor-period 2
periodic-interval 1
aggregation-type prefix-length 32
prefixes 100
expire after time 720


cek Master :

R1#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is 155.1.13.3 to network 0.0.0.0

222.165.222.0/29 is subnetted, 1 subnets
O 222.165.222.72 [110/20010] via 155.1.12.2, 00:01:18, FastEthernet0/0
155.1.0.0/24 is subnetted, 2 subnets
C 155.1.12.0 is directly connected, FastEthernet0/0
C 155.1.13.0 is directly connected, FastEthernet0/1
150.1.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 150.1.1.0/24 is directly connected, Loopback0
O 150.1.3.3/32 [110/11] via 155.1.13.3, 00:01:18, FastEthernet0/1
O 150.1.2.2/32 [110/11] via 155.1.12.2, 00:01:20, FastEthernet0/0
202.72.212.0/28 is subnetted, 1 subnets
O 202.72.212.176 [110/205] via 155.1.13.3, 00:01:20, FastEthernet0/1
O*E1 0.0.0.0/0 [110/400] via 155.1.13.3, 00:01:20, FastEthernet0/1

cek lagi :
R1#traceroute 100.100.100.100 so lo0

Type escape sequence to abort.
Tracing the route to 100.100.100.100

1 155.1.13.3 16 msec 40 msec 84 msec
2 202.72.212.177 192 msec 44 msec 48 msec
3 200.1.1.1 128 msec * 80 msec

pertanyaan> kenapa lewat router 3 ya? itu kan primary, trus koq bisa primary ?
karena bandwitdhnya 512 alias lebih besar, cek this out :
di R3:
interface FastEthernet0/0
bandwidth 512
ip address 202.72.212.180 255.255.255.240
duplex auto
speed auto

sedangkan di R2 :
interface FastEthernet0/0
bandwidth 5
ip address 222.165.222.73 255.255.255.248
delay 1000000
duplex auto
speed auto

bandwitdhnya lebih kecil.



*Mar 1 01:42:14.795: %OER_MC-5-NOTICE: Prefix Learning STARTED

cek sla naik ok, kondisi OK*

R1#sh ip sla statistics

Round Trip Time (RTT) for Index 1
Latest RTT: 105 milliseconds
Latest operation start time: *01:47:45.515 UTC Fri Mar 1 2002
Latest operation return code: OK
RTT Values:
Number Of RTT: 799 RTT Min/Avg/Max: 5/105/267 milliseconds
Latency one-way time:
Number of Latency one-way Samples: 0
Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds
Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds
Jitter Time:
Number of SD Jitter Samples: 798
Number of DS Jitter Samples: 785
Source to Destination Jitter Min/Avg/Max: 0/15/96 milliseconds
Destination to Source Jitter Min/Avg/Max: 0/22/148 milliseconds
Packet Loss Values:
Loss Source to Destination: 0 Loss Destination to Source: 0
Out Of Sequence: 0 Tail Drop: 2
Packet Late Arrival: 0 Packet Skipped: 199
Voice Score Values:
Calculated Planning Impairment Factor (ICPIF): 12
MOS score: 4.03
Number of successes: 132
Number of failures: 2
Operation time to live: Forever



Round Trip Time (RTT) for Index 2
Latest RTT: 36 milliseconds
Latest operation start time: *01:48:24.535 UTC Fri Mar 1 2002
Latest operation return code: OK
Number of successes: 2786
Number of failures: 19
Operation time to live: Forever



Round Trip Time (RTT) for Index 3
Latest RTT: 164 milliseconds
Latest operation start time: *01:48:25.239 UTC Fri Mar 1 2002
Latest operation return code: OK
Number of successes: 1385
Number of failures: 2
Operation time to live: Forever

trus tiba2 keluar ini:

*Mar 1 01:48:59.299: %OER_MC-5-NOTICE: Discovered Exit for Prefix 100.100.100.100/32, BR 150.1.3.3, i/f Fa0/0

artinya bahwa prefix 100.100.100.100/32 akan di lewatkan 150.1.3.3 artinya ini R3!!! :)

tiba2 lagi eh:

*Mar 1 01:49:41.247: %OER_MC-5-NOTICE: Route changed Prefix 100.100.100.100/32, BR 150.1.2.2, i/f Fa0/0, Reason Delay, OOP Reason Timer Expired

lihat alasannya? ininih = Reason Delay, OOP Reason Timer Expired

koq delay, ya iyalah, lihat interface f0/0 di R3 :

R1#traceroute 100.100.100.100 so lo0

Type escape sequence to abort.
Tracing the route to 100.100.100.100

1 155.1.12.2 44 msec 116 msec 16 msec
2 222.165.222.78 168 msec 72 msec 104 msec
3 200.1.1.1 88 msec * 332 msec
R1#traceroute 100.100.100.100 so lo0

Type escape sequence to abort.
Tracing the route to 100.100.100.100

1 155.1.12.2 16 msec 16 msec 176 msec
2 222.165.222.78 156 msec 216 msec 120 msec
3 200.1.1.1 256 msec
*Mar 1 01:56:57.199: %OER_MC-5-NOTICE: Route changed Prefix 100.100.100.100/32, BR 150.1.3.3, i/f Fa0/0, Reason Unreachable, OOP Reason Utilization * 284 msec
R1#traceroute 100.100.100.100 so lo0

Type escape sequence to abort.
Tracing the route to 100.100.100.100

1 155.1.13.3 260 msec 224 msec 204 msec
2 202.72.212.177 160 msec 136 msec 204 msec
3 200.1.1.1 212 msec * 196 msec
R1#traceroute 100.100.100.100 so lo0

Lihat pergantian di atas, nunggu agak lama juga, koq gak bisa cepat yah? apa karena processor gua udah 98% ya? mungkin jika di perangkat langsung gak bakal gini :(
ok C U...