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DPOD can be configure with two network interface :

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1. Copy the network interface MAC address as displayed in the "ifconfig"  command output after the attribute "ether"
   
   

2. change directory to /etc/sysconfig/network-scripts
   
   

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   cd /etc/sysconfig/network-scripts

   
   

3. duplicate the eth0 (first network interface) network interface configuration file for the new network interface file (eth1)
   
   

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   cp ifcfg-eth0 ifcfg-eth1

   
   

4. Edit the new file (ifcfg-eth1) and alter the following attributes based on the new network interface properties
   
   

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   DEVICE=eth1 BOOTPROTO=static ONBOOT=yes NM_CONTROLLED=no HWADDR=00:0c:29:14:7a:88 IPADDR=192.168.1.178 NETMASK=255.255.255.0 USERCTL=no DNS1=8.8.8.8 DNS2=8.8.4.4 IFCONFIG_OPTS="txqueuelen 10000"

   
   DEVICE     : The network interface device name should be eth1
   HWADDR  : The network interface MAC address as displayed at section 1.
   NETMASK : The network mask based on the new interface properties (the network administrator should supply this information)
   
   

5. Restart the network service by entering the following command

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   service network restart The command output should be : Restarting network (via systemctl): [ OK ]

   
   

6. Use the command "ifconfig" to make sure the new network interface is up and configured with the correct IP address
   
   
   If the new IP address is not displayed restart the server.
   
   
7. sdf

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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 :
   
   

   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

   
   

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   ip route add default via 192.168.1.1 dev eth1 table rt1

   
   

4. Add a routing entry :
   
   

   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

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   ip route add 192.168.1.0/24 dev eth1 table rt1

   
   

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

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   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

   
   

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
   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
   
   

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

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   from <source ip address or subnet> table <routing table name> 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
   from 192.168.1.120/32 table rt1 to 192.168.1.120/32 table rt1

   
   
   

3. dsgf

4. 
   
   

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