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DPOD can be configure with two network interface :

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1. Edit the file /etc/iproute2/rt_tables and add new routing table entry with id "1" named "rt1"
   
   

   
   

   
   

2. In order to add new routing entry to the new routing table use the "ip route" command.
   This command will add new temporary entry to the routing table.

3. Add a default gateway entry (should be executed only once)
   
   

   Code Block
   ip route add default via <interface default gateway> dev <interface name> table <routing table name>

   
   Example : For adding the default gateway 192.168.1.1 to interface eth1

   
   

   Code Block
   language bash theme RDark
   ip route add default via 192.168.1.1 dev eth1 table rt1

   
   

   Note
   Adding default gateway to network interface should be executed only once.

   
   
   

4. Add a routing entry  (should be executed as needed for every monitored device)
   
   

   Code Block
   ip route add <destinamtion ip address or subnet> dev <interface name> table <routing table name>

   
   Example : For adding the route entry to subnet 192.168.1.x to interface eth1

   Code Block
   language bash theme RDark
   ip route add 192.168.1.0/24 dev eth1 table rt1

   
   

   Note
   Adding specific routing entry should be executed as needed for every monitored device

   
   
   

5. In order to make these entries permanent edit the file /etc/sysconfig/network-scripts/route-<interface name> and add the following :

   Code Block
   default via <interface default gateway> dev <interface name> table <routing table name> <destinamtion ip address or subnet> dev <interface name> table <routing table name>

   
   For example : Create new permanent routing file for interface eth1 and add the entries used at previous examples :

   Code Block
   default via 192.168.1.1 dev eth1 table rt1 192.168.1.0/24 dev eth1 table rt1

   
   

6. To confirm that the new routing table includes the new routing entries use the following command to display the content of the table :
   
   

   Code Block
   ip route show tab <routing table name>

   
   For example : To display the content of table rt1
   
   

   Code Block
   language bash theme RDark
   ip route show tab rt1 The output should be : default via 192.168.1.1 dev eth1 192.168.1.0/24 dev eth1 scope link

   
   

Create New Routing Rule

The routing rule instruct the operating system when to use the new routing table.

1. In order to add new routing rule entry to the new routing table use the "ip rule" command.
   This command will add new temporary rule entry .

   Code Block
   ip rule add from <source ip address or subnet> table <routing table name> ip rule add to <destination ip address or subnet> table <routing table name>

   
   For example : The routing rule for monitored device 192.168.1.120 are :

   Code Block
   language bash theme RDark
   ip rule add from 192.168.1.120/32 table rt1 ip rule add to 192.168.1.120/32 table rt1

   The specific IP address can be replaced with subnet if subnet rule is appropriate : 192.168.1.0/24
   
   

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