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- wireless links are established between the BS1, CPE2 and CPE3 devices, . BS1 is configured as Maser Master and CPE2, CPE3 - as Slaves;
- each wireless device is connected to a wired network segment and each segment uses its own IP addressing;
- router R1 is also connected to LAN-3, as well as to the LAN-6, LAN-7, LAN-8 networks;
- it is necessary to establish connectivity between all the networks by configuring the ODR protocol on the BS1, CPE2 and CPE3 wireless devices.
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Let's perform a step by step configuration of the devices in accordance with the task. In addition to the ODR configuration, in order to establish the communication with LAN-6, LAN-7 and LAN-8, static routing will be used (see Static routing).
The ODR configuration will be performed via CLI and after each step, the routing information will be displayed for analysis.
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| Description | Perform the pre-configuration of the devices: establish the wireless connections. |
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BS1 | | Code Block |
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| Set IP addresses
ifc eth0 10.10.10.1/24
ifc rf5.0 172.16.0.1/29
Disable switching
switch stop
Establish the radio link
rf rf5.0 band 20
rf rf5.0 freq 5000
mint rf5.0 -name "BS_1"
mint rf5.0 -type master |
|
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| CPE2 | | Code Block |
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| Set IP addresses
ifc eth0 10.10.20.2/24
ifc rf5.0 172.16.0.2/29
Disable switching
switch stop
Establish the radio link
mint rf5.0 -name "CPE_2"
mint rf5.0 -type slave
mint rf5.0 prof 1 -band 20 -freq 5000 -type slave
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|
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CPE3 | | Code Block |
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| Set IP addresses
ifc eth0 10.10.30.3/24
ifc rf5.0 172.16.0.3/29
Disable switching
switch stop
Establish the radio link
mint rf5.0 -name "CPE_3"
mint rf5.0 -type slave
mint rf5.0 prof 1 -band 20 -freq 5000 -type slave
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|
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| Description | Analyze the information about the ODR's protocol operation: - BS1: there are two subscriber devices, CPE2 and CPE3 added in the spoke devices list. The device does not export any routes, because it has the hub role.
- CPE2: BS1 has been added to the list of devices having the hub role, while there is no list of spoke devices. The device exports a route to the 10.10.20.0/24 network, but does not export the 172.16.0.0/29 network, because the ODR protocol is running on the rf5.0 interface, which is associated with the 172.16.0.0/29 network.
- CPE3: the same as for CPE2.
|
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| BS1 | | Code Block |
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| BS_1#1> mint rf5.0 -odr show
rf5.0: ODR state - HUB
List of active Spokes:
00043513724E "AS_3"
10.10.30.3/24
000435109CC0 "AS_2"
10.10.20.2/24
Total Spokes: 2 |
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| CPE2 | | Code Block |
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| AS_2#2> mint rf5.0 -odr show
rf5.0: ODR state - SPOKE
Preffered HUB: 00043510E5B9 "BS_1"
List of HUBs:
00043510E5B9 "BS_1", cost 51, hops 1
Exported routes:
10.10.20.2/24
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|
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| CPE3 | | Code Block |
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| AS_3#1> mint rf5.0 -odr show
rf5.0: ODR state - SPOKE
Preffered HUB: 00043510E5B9 "BS_1"
List of HUBs:
00043510E5B9 "BS_1", cost 51, hops 1
Exported routes:
10.10.30.3/24
|
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| Description | Analyze the routing table of the wireless devices: - BS1: two new entries have been added to the routing table for networks 10.10.20.0/24 and 10.10.30.0/24. This routing information is received from the subscriber stations and the MAC address of the corresponding wireless device is specified as the gateway for each entry.
- CPE2: a default route has been added to the routing table and BS1 is used as a gateway. Note that CPE2 does not have any routing information about the 10.10.30.0/24 and 10.10.40.0/24 networks connected to CPE3 and CPE4.
- CPE3: same as for CPE2.
|
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| BS1 | | Code Block |
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| BS_1#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
10.10.10.0/24 link#2 UC 0 0 eth0
10.10.20.0/24 00:04:35:10:9c:c0 ULO 0 0 rf5.0
10.10.30.0/24 00:04:35:13:72:4e ULO 0 0 rf5.0
127.0.0.1 127.0.0.1 UH 1 473 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 15780 lo |
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| CPE2 | | Code Block |
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| AS_2#2> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.20.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 432 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 18457 lo0 |
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| CPE3 | | Code Block |
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| AS_3#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.30.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 560 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 10686 lo |
|
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The network segments LAN-6, LAN-7, LAN-8 are connected to the router R1, while CPE3 does not have interfaces connected to these networks, so there is no routing information about these networks in its routing table. One way to fix this is to add static routes at CPE3 and at R1. Let's assume that the configuration of R1 has already been completed, so it is necessary to make changes to the configuration of CPE3 configuration.
| Description | Add static routes for the LAN-6, LAN-7 and LAN-8 networks to the CPE3's routing table. |
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| BS1 | Changes are not required. |
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| CPE2 | Changes are not required.
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| CPE3 | | Code Block |
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| route add 192.168.6.0/28 10.10.30.1
route add 192.168.7.0/28 10.10.30.1
route add 192.168.8.0/28 10.10.30.1 |
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In order to transmit the routing information about LAN-6, LAN-7 and LAN-8 to all the wireless devices, it is necessary to export the static records to ODR. This operation can be performed using the CPE3's configuration, since the routing table of this device contains the static entries and the rf5.0 interface supports ODR.
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| Description | Analyze the changes in the routing tables of the devices: - BS1: three new entries for LAN-6, LAN-7, and LAN-8 have been added to the routing table. The MAC address of CPE3 is specified as the gateway for these networks.
- CPE2: without changes. The path from CPE2 to any of the LAN-6, LAN-7 or LAN-8 networks goes through BS1, so there is no need to add these entries to the routing table. In accordance with the ODR's protocol logic, spoke devices send routing information only to the devices having hub roles.
- CPE3: without changes.
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| BS1 | | Code Block |
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| BS_1#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
10.10.10.0/24 link#2 UC 0 0 eth0
10.10.20.0/24 00:04:35:10:9c:c0 ULO 0 0 rf5.0
10.10.30.0/24 00:04:35:13:72:4e ULO 0 0 rf5.0
127.0.0.1 127.0.0.1 UH 1 473 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
192.168.6.0/28 00:04:35:13:72:4e ULO 0 0 rf5.0
192.168.7.0/28 00:04:35:13:72:4e ULO 0 0 rf5.0
192.168.8.0/28 00:04:35:13:72:4e ULO 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 15780 lo |
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| CPE2 | | Code Block |
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| AS_2#2> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.20.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 432 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 18457 lo |
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| CPE3 | | Code Block |
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| AS_3#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.30.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 560 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
192.168.6.0/28 10.10.30.1 UGS 0 0 eth0
192.168.7.0/28 10.10.30.1 UGS 0 0 eth0
192.168.8.0/28 10.10.30.1 UGS 0 0 eth0
224.0.0.0/8 127.0.0.1 UGS 0 10686 lo |
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| Description | Analyze the ODR's protocol operation at CPE3. The entries about the 192.168.7.0/28 and 192.168.8.0/28 networks have been removed from the exported routes list due to the filtering rule. The information about the 10.10.30.0/24 network is exported because the created filter was applied only to the static routes (kernel), and the network 10.10.30.0/24 is directly connected. |
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| BS1 | Changes are not required.
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| CPE2 | Changes are not required.
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| CPE3 | | Code Block |
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| AS_3#1> mint rf5.0 -odr show
rf5.0: ODR state - SPOKE
Preffered HUB: 00043510E5B9 "BS_1"
List of HUBs:
00043510E5B9 "BS_1", cost 51, hops 1
Exported routes:
10.10.30.3/24
192.168.6.0/28
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| Description | Analyze the ODR protocol's operation at CPE3. The CPE3 exports static routes to the 192.168.7.0/28 and 192.168.8.0/28 networks and filters the route information about 192.168.6.0/28. |
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| BS1 | Changes are not required.
|
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| CPE2 | Changes are not required.
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| CPE3 | | Code Block |
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| AS_3#1> mint rf5.0 -odr show
rf5.0: ODR state - SPOKE
Preffered HUB: 00043510E5B9 "BS_1"
List of HUBs:
00043510E5B9 "BS_1", cost 51, hops 1
Exported routes:
10.10.30.3/24
192.168.7.0/28
192.168.8.0/28 |
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| Description | Analyze the changes in the routing tables of the devices: - BS1: the route towards the 192.168.6.0/28 networks network was removed from the routing table, while the routes to the 192.168.7.0/28 and 192.168.8.0/28 networks were added.
- CPE2: without changes.
- CPE3: without changes.
|
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| BS1 | | Code Block |
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| BS_1#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
10.10.10.0/24 link#2 UC 0 0 eth0
10.10.20.0/24 00:04:35:10:9c:c0 ULO 0 0 rf5.0
10.10.30.0/24 00:04:35:13:72:4e ULO 0 0 rf5.0
127.0.0.1 127.0.0.1 UH 1 473 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
192.168.7.0/28 00:04:35:13:72:4e ULO 0 0 rf5.0
192.168.8.0/28 00:04:35:13:72:4e ULO 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 15780 lo0 |
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| CPE2 | | Code Block |
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| AS_2#2> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.20.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 432 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
224.0.0.0/8 127.0.0.1 UGS 0 18457 lo0 |
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| CPE3 | | Code Block |
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| AS_3#1> netstat -r
Routing tables
Destination Gateway Flags Refs Use Interface
mintGateway BS_1 rf5.0
10.10.30.0/24 link#2 UC 0 0 eth0
127.0.0.1 127.0.0.1 UH 1 560 lo0
172.16.0.0/29 link#3 UC 0 0 rf5.0
192.168.6.0/28 10.10.30.1 UGS 0 0 eth0
192.168.7.0/28 10.10.30.1 UGS 0 0 eth0
192.168.8.0/28 10.10.30.1 UGS 0 0 eth0
224.0.0.0/8 127.0.0.1 UGS 0 10686 lo0 |
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