IP Routing Terms and Definitions lists terms and definitions used in this IP routing configuration discussion.
IP Routing Terms and Definitions
| Term | Definition |
|---|---|
| Address Resolution Protocol (ARP) | A protocol providing a method for finding a MAC hardware address when only the IP address is known. |
| ARP proxy | Provides for the ability of a device on a given network to answer the ARP queries for a network address that is not on that network. |
| blackhole route | Silently drops packets destined for this route‘s subnet. |
| broadcast forwarding | Provides for the ability for rout UDP broadcasts in order to provide services to clients on a different subnet than the one originating the broadcast (S-, K-Series). |
| directed broadcast | The ability to address a destination host such that the arriving packet will be broadcasted to the network as if it was a normal broadcast generated by the receiving host (S-, K-Series). |
| Duplicate Address Detection (DAD) | An IPv6 neighbor discovery capability that uses neighbor solicitation and neighbor advertisement messages to verify the uniqueness of an address. |
| general prefix | The ability to assign a name to represent a network prefix from which longer IPv6 addresses can be configured. |
| global router | The default router from which VRF routing instances are configurable. |
| gratuitous ARP | A method for overriding the normal ARP process that provides an ARP announcement packet containing valid sender hardware and protocol addresses for the host that sent it. ARP announcements are sent out during startup. |
| IP address | An address used by the IP protocol to identify a routing interface or routing device. |
| IP address helper | The ability to specify the IP address the UDP forwarded packet should be sent to (S-, K-Series). |
| IP debug | A feature that monitors a set of IP processes and displays messages when configured events occur (S-, K-Series). |
| managed address configuration | A DHCPv6 capability that determines whether the interface will send out IPv6 address configuration to an interface with IPv6 autoconfiguration enabled. |
| management interface | A non-forwarding interface to which an IP subnet can be assigned, allowing the network administrator to create an out-of-band management subnet designed to only pass network management data. |
| neighbor discovery | An IPv6 protocol defined in FRC4861 that uses ICMPv6 messages to determine the link-layer addresses of nodes residing on the same local link, to locate neighboring routers, to learn certain link and address configuration, and to track the reachability of neighbors. |
| neighbor unreachability detection | An IPv6 neighbor discovery capability that detects the failure of a neighbor or the failure of the forward path to the neighbor. |
| relay agent | A DHCPv6 application that provides a means for relaying DHCPv6 requests between a subnet to which no DHCP server is connected to other subnets on which servers are attached (S-, K-Series). |
| routing interface | A VLAN or loopback interface configured for IP routing. |
| static route | An administratively configured IP route consisting of the destination and next-hop IP addresses from the IP router the route is configured on. |
| Virtual Routing and Forwarding (VRF) | Provides a method of partitioning your network into segregated routed domains that may contain unique IP networks, routes, and other configuration that would otherwise conflict if they were all deployed on the same router (S-, K-Series). |
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