RyuBGPSpeakerを 活用したOpenFlow簡易ルータ を試してみた

1. RyuBGPSpeakerを
活用したOpenFlow簡易ルータ
を試してみた
2014.12.24
@ttsubo
1

2. RyuBGPSpeakerは、BGPによるダイナミック
ルーティングが動作可能だが、データプレーンは
未対応なので、実環境には適用できません。
OpenFlow簡易ルータを自作して、
BGP/OpenFlowと連携させてみた
2

3. First Step..
RouterBOARDをOpenFlow化させ、RyuBGPSpeakerで
学習したPrefixをFlow Tableに注入してみる。
internet
OpenFlow
スイッチ
Ryuコントローラ
BGP
Message
OpenFlow
Message
Quagga1 Quagga2
3

4. OpenflowRouter
RouterController
REST-IF
data
SimpleRouter
WSGI Application
Simple
BGPSpeaker
PortTable
ArpTable
RoutingTable
PortStats
FlowStats
SimpleMonitor
RyuApp
FlowTable OpenFlowスイッチ
（OpenvSwitch）
BGPルータ
（Quagga）
OpenFlow
Message
BGP
Message
OpenFlowチャネルBGPチャネル
NorthBound
4

5. 確かに、このBGPネットワーク構成で、
期待どおりに動作したのだが....
5

6. 192.168.200.1
OpenFlow
チャネル
192.168.201.1
Ryuコントローラ
192.168.200.100 192.168.201.100AS:65001
この構成の課題は、BGP Peer数が増えるごと
に、RyuコントローラとOpenFlowスイッチ間
のケーブル結線も増えてしまう。
AS:65002
AS:65002
（固定）
Port1 Port2
BGP
チャネル
....
6

7. LinuxBox上にOpenFlowスイッチとRyuコントローラを
同居させて、LinuxBox内部インターフェスで繋げてみる。
Second Step..
internet
192.168.100.1
Quagga1
Quagga3
Quagga2
OVS1
OVS2
OVS3
AS65001 AS65002
192.168.100.0/24 192.168.102.0/24
192.168.102.1
7

8. internet
192.168.100.1
Quagga1
Quagga3
Quagga2
OVS1
OVS2
OVS3
192.168.102.1
iBGP
eBGP
eBGP
iBGP
iBGP
iBGP
AS65001 AS65002
192.168.100.0/24
192.168.102.0/24
BGPルータ間でBGP経路伝搬させて…
BGPネットワーク面を経由してinternetに繋いでみる
8

9. internet
192.168.100.1
Quagga1
Quagga3
Quagga2
OVS1
OVS2
OVS3
192.168.102.1
iBGP
eBGP
iBGP
iBGP
iBGP
AS65001 AS65002
192.168.100.0/24
192.168.102.0/24
万一、BGPネットワーク面の途中区間で通信断が発生し
ても、適切に通信経路を 回させてみる
Down
9

10. 実際に、ネット通信が可能であり、途中区間で通信断が
発生しても、約１分程度で回復できた
10

11. Quagga
1
Quagga
2
OVS1
OVS2
AS65001
192.168.100.1/24
MED100
MED200
OVS3
Quagga
3
AS65002
root@Quagga-3:~#
ping
192.168.100.1
PING
192.168.100.1
(192.168.100.1):
56
data
bytes
64
bytes
from
192.168.100.1:
seq=0
ttl=254
time=1.999
ms
64
bytes
from
192.168.100.1:
seq=1
ttl=254
time=1.344
ms
64
bytes
from
192.168.100.1:
seq=2
ttl=254
time=1.272
ms
64
bytes
from
192.168.100.1:
seq=3
ttl=254
time=1.241
ms
64
bytes
from
192.168.100.1:
seq=4
ttl=254
time=1.217
ms
64
bytes
from
192.168.100.1:
seq=60
ttl=253
time=2.081
ms
64
bytes
from
192.168.100.1:
seq=61
ttl=253
time=1.414
ms
64
bytes
from
192.168.100.1:
seq=62
ttl=253
time=1.172
ms
64
bytes
from
192.168.100.1:
seq=63
ttl=253
time=1.364
ms
64
bytes
from
192.168.100.1:
seq=64
ttl=253
time=1.333
ms
64
bytes
from
192.168.100.1:
seq=65
ttl=253
time=1.323
ms
^C
---
192.168.100.1
ping
statistics
---
66
packets
transmitted,
11
packets
received,
83%
packet
loss
round-trip
min/avg/max
=
1.172/1.432/2.081
ms
192.168.101.1/24
Down
Pingも途中で通信断になったが、約１分後に回復できた
11

12. OpenFlow簡易ルータは、
Githubにて公開してます。
https://github.com/ttsubo/simpleRouter/tree/v0.3
12

13. 以下、参考
13

14. Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*>
192.168.102.0/24
None
172.16.201.1
Only
Path
100
i
*>
172.16.103.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
172.16.102.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
192.168.202.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
192.168.100.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
0.0.0.0/0
None
192.168.201.1
Only
Path
100
65001
?
*>
10.0.0.2/32
None
192.168.201.1
Only
Path
100
65001
?
*>
172.16.201.101/32
None
172.16.201.1
Only
Path
100
i
*>
192.168.101.1/32
None
172.16.201.1
Only
Path
100
i
*>
172.16.202.101/32
None
172.16.201.1
Only
Path
100
i
*>
172.16.104.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
172.16.101.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
192.168.201.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
192.168.0.0/24
None
192.168.201.1
Only
Path
100
65001
?
*>
10.0.0.1/32
None
192.168.201.1
Only
Path
100
Show_rib_ipv4 in OVS1
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
14

15. http:/http http://www.nexcom-jp.com/FilData/getimg/5712caac-3256-4d8b-
b0ce-9c4ed262bed2://www.n http://www.nexcom-jp.com/FilData/getimg/
5712caac-3256-4d8b-b0ce-9c http://www.nexcom-jp.com/FilData/getimg/
5712caac-3256-4d8b-b0ce-9c4ed262bed2 4ed262bed2 excom-jp.com/FilData/
getimg/5712caac-3256-4d8b-b0ce-9c4ed262bed2/www.nexcom-jp.com/FilData/
getimg/5712caac-3256-4d8b-b0ce-9c4ed262bed2
Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*
192.168.201.0/24
None
192.168.202.1
200
65001
?
*>
None
172.16.203.1
MED
100
200
65001
?
*
0.0.0.0/0
None
192.168.202.1
200
65001
?
*>
None
172.16.203.1
MED
100
200
65001
?
*
172.16.102.0/24
None
192.168.202.1
200
65001
?
*>
None
172.16.203.1
MED
100
200
65001
?
*
192.168.100.0/24
None
192.168.202.1
200
65001
?
*>
None
172.16.203.1
MED
100
200
65001
?
*
10.0.0.1/32
None
192.168.202.1
200
65001
?
*>
None
172.16.203.1
MED
100
200
65001
?
…(snip)
*>
192.168.102.0/24
None
172.16.202.1
Only
Path
100
i
*>
192.168.101.1/32
None
172.16.202.1
Only
Path
100
i
*>
172.16.202.101/32
None
172.16.202.1
Only
Path
100
i
*>
172.16.201.101/32
None
172.16.202.1
Only
Path
100
i
Show_rib_ipv4 in OVS2
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
15

16. Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*>
192.168.0.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
172.16.202.101/32
None
0.0.0.0
Only
Path
i
*>
192.168.201.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
10.0.0.1/32
None
172.16.201.101
Only
Path
100
300
65001
?
*>
172.16.104.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
172.16.101.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
192.168.102.0/24
None
192.168.101.1
Only
Path
i
*>
172.16.201.101/32
None
0.0.0.0
Only
Path
i
*>
192.168.100.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
10.0.0.2/32
None
172.16.201.101
Only
Path
100
300
65001
?
*>
192.168.101.1/32
None
0.0.0.0
Only
Path
i
*>
192.168.202.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
172.16.103.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
172.16.102.0/24
None
172.16.201.101
Only
Path
100
300
65001
?
*>
0.0.0.0/0
None
172.16.201.101
Only
Path
100
300
65001
?
Show_rib_ipv4 in OVS3
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
16

17. Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Down
Show_rib_ipv4 in OVS1
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*>
192.168.102.0/24
None
172.16.201.1
Only
Path
100
i
*>
0.0.0.0/0
None
172.16.203.101
Only
Path
200
200
65001
?
*>
172.16.103.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
192.168.0.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
172.16.102.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
192.168.202.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
192.168.201.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
172.16.101.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
10.0.0.1/32
None
172.16.203.101
Only
Path
200
200
65001
?
*>
192.168.100.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
172.16.104.0/24
None
172.16.203.101
Only
Path
200
200
65001
?
*>
10.0.0.2/32
None
172.16.203.101
Only
Path
200
200
65001
?
*>
172.16.201.101/32
None
172.16.201.1
Only
Path
100
i
*>
192.168.101.1/32
None
172.16.201.1
Only
Path
100
i
*>
172.16.202.101/32
None
172.16.201.1
Only
Path
100
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
17

18. Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Down
Show_rib_ipv4 in OVS2
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*>
192.168.201.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
0.0.0.0/0
None
192.168.202.1
Only
Path
200
65001
?
*>
172.16.102.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
192.168.100.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
10.0.0.1/32
None
192.168.202.1
Only
Path
200
65001
?
*>
172.16.104.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
192.168.202.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
172.16.103.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
172.16.101.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
10.0.0.2/32
None
192.168.202.1
Only
Path
200
65001
?
*>
192.168.0.0/24
None
192.168.202.1
Only
Path
200
65001
?
*>
192.168.102.0/24
None
172.16.202.1
Only
Path
100
i
*>
192.168.101.1/32
None
172.16.202.1
Only
Path
100
i
*>
172.16.202.101/32
None
172.16.202.1
Only
Path
100
i
*>
172.16.201.101/32
None
172.16.202.1
Only
Path
100
i
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
18

19. Quagga
1
Quagga
2
OVS1
OVS2
192.168.100.1/24
OVS3
Quagga
3
192.168.101.1/24
Down
Show_rib_ipv4 in OVS3
Status
codes:
*
valid,
>
best
Origin
codes:
i
-
IGP,
e
-
EGP,
?
-
incomplete
Network
Labels
Next
Hop
Reason
Metric
LocPrf
Path
*>
192.168.100.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
172.16.202.101/32
None
0.0.0.0
Only
Path
i
*>
172.16.102.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
192.168.102.0/24
None
192.168.101.1
Only
Path
i
*>
172.16.201.101/32
None
0.0.0.0
Only
Path
i
*>
192.168.101.1/32
None
0.0.0.0
Only
Path
i
*>
0.0.0.0/0
None
172.16.202.101
Only
Path
200
100
65001
?
*>
172.16.101.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
192.168.201.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
192.168.0.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
172.16.104.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
10.0.0.1/32
None
172.16.202.101
Only
Path
200
100
65001
?
*>
10.0.0.2/32
None
172.16.202.101
Only
Path
200
100
65001
?
*>
172.16.103.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
*>
192.168.202.0/24
None
172.16.202.101
Only
Path
200
100
65001
?
192.168.201.0/24
192.168.202.0/24
172.16.203.0/24
172.16.201.0/24
172.16.202.0/24
19