IP Routing 6-5A forwarding table is maintained which specifies which interface to route an IPpacket based on the destination IP address. Entries in the forwarding table areboth static and dynamic. Static entries are based on the LAN’s and remote site'ssubnet addresses and user configured static routes. Dynamic entries are addedwhen RIP is enabled and routes are learned from neighboring routers.To configure IP routing, IP must be defined on both the LAN interface and one ormore VC profiles. On the LAN, an IP network must exist with a specified IP addressand subnet mask. In the VC profile, IP routing needs to be enabled, and theremote router address, a remote subnet mask and local WAN interface addressneed to be configured. The remote site address configuration can be learneddynamically when the connection is established if the Network Service is PPP,otherwise it has to be specified.Remember to save your configuration using the save all command beforerebooting your OfficeConnect Remote 812 so that your changes will be written topermanent FLASH memory.Enabling IP Routing When the OfficeConnect Remote 812 is to be used for IP Routing, IP forwardingmust be enabled. This is a global setting for the entire router. To enable IP routing, use the command:enable ip forwarding To disable IP routing, use the command:disable ip forwardingIP Forwarding refers to the routing of IP packets from one interface to another. Itdoes not affect communicating to the OfficeConnect Remote 812 itself. Evenwhen IP Forwarding is disabled, you can perform non-routing functions such asuse a Web browser to manage the unit and use PING.In addition to IP forwarding, there is a global RIP setting. If RIP is globally disabled,it is disabled for all LAN and WAN networks. If RIP is globally enabled, it can thenbe specifically enabled or disabled on the LAN IP networks and in each remotesite’s VC profile. To globally enable IP RIP, use the command:enable ip RIP To globally disable IP RIP, use the command:disable ip RIP To see the current IP Forwarding and RIP status, use the following commands:
