# Mininet-containernet 5 Dynamic Routing OSPF
Topology
Script
```
#!/usr/bin/env python
from mininet.net import Containernet
from mininet.cli import CLI
from mininet.link import TCLink, Link
from mininet.log import info, setLogLevel
if '__main__' == __name__:
setLogLevel('info')
net = Containernet()
h1 = net.addHost('h1')
h2 = net.addHost('h2')
r1 = net.addDocker('r1', dimage="kathara/quagga:latest", volumes=["/home/user/server-test/test-quagga-ospf/dynamic_routing/r1/quagga:/etc/quagga"])
r2 = net.addDocker('r2', dimage="kathara/quagga:latest", volumes=["/home/user/server-test/test-quagga-ospf/dynamic_routing/r2/quagga:/etc/quagga"])
r3 = net.addDocker('r3', dimage="kathara/quagga:latest", volumes=["/home/user/server-test/test-quagga-ospf/dynamic_routing/r3/quagga:/etc/quagga"])
net.addLink(h1, r1)
net.addLink(h2, r2)
net.addLink(r1, r2)
net.addLink(r1, r3)
net.addLink(r2, r3)
net.build()
r1.cmd("ifconfig r1-eth0 0")
r1.cmd("ifconfig r1-eth1 0")
r1.cmd("ifconfig r1-eth2 0")
r2.cmd("ifconfig r2-eth0 0")
r2.cmd("ifconfig r2-eth1 0")
r2.cmd("ifconfig r2-eth2 0")
r3.cmd("ifconfig r3-eth0 0")
r3.cmd("ifconfig r3-eth1 0")
r1.cmd("ip addr add 192.168.1.254/24 brd + dev r1-eth0")
r1.cmd("ip addr add 12.1.1.1/24 brd + dev r1-eth1")
r1.cmd("ip addr add 13.1.1.1/24 brd + dev r1-eth2")
r2.cmd("ip addr add 192.168.2.254/24 brd + dev r2-eth0")
r2.cmd("ip addr add 12.1.1.2/24 brd + dev r2-eth1")
r2.cmd("ip addr add 23.1.1.2/24 brd + dev r2-eth2")
r3.cmd("ip addr add 13.1.1.3/24 brd + dev r3-eth0")
r3.cmd("ip addr add 23.1.1.3/24 brd + dev r3-eth1")
r1.cmd("/etc/init.d/quagga restart")
r2.cmd("/etc/init.d/quagga restart")
r3.cmd("/etc/init.d/quagga restart")
h1.cmd("ifconfig h1-eth0 0")
h1.cmd("ip address add 192.168.1.1/24 dev h1-eth0")
h1.cmd("ip route add default via 192.168.1.254 dev h1-eth0")
h2.cmd("ifconfig h2-eth0 0")
h2.cmd("ip address add 192.168.2.1/24 dev h2-eth0")
h2.cmd("ip route add default via 192.168.2.254 dev h2-eth0")
CLI(net)
net.stop()
```
R1 OSPF configured File
```
root@ubuntu:/home/user/server-test/test-quagga-ospf/dynamic_routing/r1/quagga# cat ospfd.conf
hostname R1
password zebra
router ospf
ospf router-id 12.1.1.1
network 192.168.1.0/24 area 0.0.0.0
network 12.1.1.0/24 area 0.0.0.0
network 13.1.1.0/24 area 0.0.0.0
log file /var/log/quagga/zebra.log
```
R1 login (OSPF)
```
root@ubuntu:/home/user/Desktop# docker exec -it f691 bash
root@r1:/# nc localhost 2603
bash: nc: command not found
root@r1:/# nc localhost 2604
bash: nc: command not found
root@r1:/# telnet localhost 2604
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Hello, this is Quagga (version 1.0.20160315).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
User Access Verification
Password:
R1>
```
Privilege Mode
```
enable
```
Lookup OSPF info
```
R1# show ip ospf
OSPF Routing Process, Router ID: 12.1.1.1
Area ID: 0.0.0.0 (Backbone)
Number of interfaces in this area: Total: 3, Active: 3
Number of fully adjacent neighbors in this area: 2
Area has no authentication
```
## Show ospf Neighbor (r1)
```
R1# show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface RXmtL RqstL DBsmL
12.1.1.2 1 Full/DR 35.437s 12.1.1.2 r1-eth1:12.1.1.1 0 0 0
13.1.1.3 1 Full/DR 36.582s 13.1.1.3 r1-eth2:13.1.1.1 0 0 0
```
Show ospf Routing table (r1)
```
R1# show ip ospf route
============ OSPF network routing table ============
N 12.1.1.0/24 [10] area: 0.0.0.0
directly attached to r1-eth1
N 13.1.1.0/24 [10] area: 0.0.0.0
directly attached to r1-eth2
N 23.1.1.0/24 [20] area: 0.0.0.0
via 12.1.1.2, r1-eth1
via 13.1.1.3, r1-eth2
N 192.168.1.0/24 [10] area: 0.0.0.0
directly attached to r1-eth0
N 192.168.2.0/24 [20] area: 0.0.0.0
via 12.1.1.2, r1-eth1
============ OSPF router routing table =============
============ OSPF external routing table ===========
```
我們能觀察 (Routing Metric)
20 -> ospf 學到的路徑
H1 ping H2 success !!
```
containernet> h1 ping h2
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
64 bytes from 192.168.2.1: icmp_seq=1 ttl=62 time=0.169 ms
64 bytes from 192.168.2.1: icmp_seq=2 ttl=62 time=0.132 ms
64 bytes from 192.168.2.1: icmp_seq=3 ttl=62 time=0.114 ms
```
## Test
R2-eth1 shut down
```
ifconfig r2-eth1 down
```
eht1 interface -> 會直接 Disappear
OSPF 會快速尋徑
```
R1# show ip ospf route
============ OSPF network routing table ============
N 13.1.1.0/24 [10] area: 0.0.0.0
directly attached to r1-eth2
N 23.1.1.0/24 [20] area: 0.0.0.0
via 13.1.1.3, r1-eth2
N 192.168.1.0/24 [10] area: 0.0.0.0
directly attached to r1-eth0
N 192.168.2.0/24 [30] area: 0.0.0.0
via 13.1.1.3, r1-eth2
```
Traceroute
```
root@ubuntu:/home/user/server-test/test-quagga-ospf# traceroute 192.168.2.1
traceroute to 192.168.2.1 (192.168.2.1), 30 hops max, 60 byte packets
1 192.168.1.254 (192.168.1.254) 0.073 ms 0.021 ms 0.022 ms
2 13.1.1.3 (13.1.1.3) 0.240 ms 0.030 ms 0.025 ms
3 23.1.1.2 (23.1.1.2) 0.049 ms 0.027 ms 0.028 ms
4 192.168.2.1 (192.168.2.1) 0.050 ms 0.042 ms 0.040 ms
```
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