Using Netstat from iSeries Navigator: Routes

If you are trying to ping an interface address and do not receive a reply, you should verify that your routes are configured and available.

Your system needs routes to send packets to other systems or hosts. The route determines the path that a packet takes to its destination. To communicate between a local and remote network, whether you are using IPv4 or IPv6 connectivity, you should have at least these two types of routes configured on the system:

A direct route (*DIRECT) allows packets to travel between interfaces on the local network. It is automatically configured and activated by the system for each interface.
A default route (*DFTROUTE) allows packets to travel to hosts that are not directly connected to your network. It provides a path for the packets to take. A default route identifies a specific node as a next hop to which the packets travel and then continue their trip to their final destination on a different network. The packets take the default route whenever there is no other (more specific) route matching the destination IP address.

Keep in mind that routes are unidirectional. Just because a packet from a client can get to your system does not mean that your system can send a packet to the client.

IPv4 routes

To display information about the IPv4 routes on your system, follow these steps:

In iSeries™ Navigator, expand your system > Network > TCP/IP Configuration > IPv4.
Select Routes.
Right-click the IP address in the Remote Network column of the route you want to see, and select Properties.
If you do not have a default route configured, you should configure it now. To configure an IPv4 default route, follow these steps:
1. In iSeries Navigator, expand your system > Network > TCP/IP Configuration > IPv4.
2. Right-click Routes and select New Route.
3. Follow the wizard's instructions to create a new default route.

IPv6 routes

To display information about the IPv6 routes on your system, follow these steps:

In iSeries Navigator, expand your system > Network > TCP/IP Configuration > IPv6.
Select Routes.
Right-click the IP address in the Destination Address column of the route you want to see, and select Properties.
For IPv6, the Internet Protocol automatically configures default routes for each interface on the system. However, if you prefer, you can use the New IPv6 Route wizard in iSeries Navigator to create new IPv6 routes yourself. To configure an IPv6 default route, follow these steps:
1. In iSeries Navigator, expand your system > Network > TCP/IP Configuration > IPv6.
2. Right-click Routes and select New Route.
3. Follow the wizard's instructions to create a new default route.

Parent topic:

Using Netstat from iSeries Navigator