Configuring the LAN
As a second step, configure the B02 ip|engine LAN which includes two physical interfaces in multi-path mode. Refer to "Use Case 1" diagram where the LAN information is displayed in blue.
| 1 | Click the Interfaces tab. |
| 2 | Enter the ip|engine Management IP address (10.1.2.2), Prefix Length (24). |
The Management IP address is used for communicating with other ip|engines, the ZTP Server and the Orchestrator.
| 3 | Use the default Auto Generated option to let the system allocate LAN addresses automatically to the Routers (Router X IP = Management IP + X) linked to the WANs in Router mode that you will configure for this ip|engine. Also refer to "IP Address allocation". |
In this example, only Router 3 IP address will be automatically defined as it corresponds to WAN3 in Router mode - see the result image below.
Note that you can also configure the IP addresses of the Routers manually inside the Management IP subnet, by deselecting the Auto Generated option. Accordingly, in this example, you would type in (or modify) the IP address of Router 3.
| 4 | Enable the DHCP Relay function and enter the DHCP Server Address (10.1.4.248). DHCP requests from the B02 ip|engine are propagated to the DHCP Server in the Data Center LAN. |
| 5 | In the current example, do not enter any VLAN ID. Note that the grey values appearing in some fields of the interface are only given as examples and are not taken into account in the configuration. |
Moreover, if you define any additional VLAN IDs, you must assign a LAN sub-interface to every Router of the VLAN IDs. DHCP parameters are optional.
When sub-interfaces are added, the number of interfaces is incremented on the tab.
| 6 | Enable the MultiPath mode. It implements two traffic paths: from LAN1 to WAN1 and from LAN2 to WAN2. |
Note that since WAN3 is a Router L3 interface, Dynamic WAN Selection is used.
| 7 | Enable the Copy LAN to WAN function to copy the state of the LAN to its related WAN. The LAN1/WAN1 or LAN2/WAN2 state synchronization is useful when the LAN interface breaks down. |
| 8 | Leave the Speed parameter to Auto to let the system define the speed of the LAN interfaces, or you can force the speed to 100FD or 1000FD. The full duplex speed is expressed in megabits per second. |
| 9 | Since there is no router in the B02 LAN for exchanging routing tables, there is no additional subnet or sub-interface to define for configuring BGP peering (refer to "Configuring BGP") or OSPF adjacencies (refer to "Configuring OSPF"). |
If there was a router in the B02 LAN, the prerequisites for using OSPF would be the following:
| • | deactivating MultiPath |
| • | configuring the Core Router with two OSPF processes and no route redistribution between the processes. The first process would be between the Core Router and the ip|engine router; the second process would be established between the Core Router and the MPLS CE Router. |
Also see how to configure: