On the NetEngine 8000 F, you can run the ip route-static command to configure a static route, which consists of the following components:
The IPv4 destination address in a static route is expressed in dotted decimal notation, while a mask can be expressed either in dotted decimal or CIDR notation.
The IPv6 destination address in a static route is a 32-digit hexadecimal number, while a prefix is expressed in CIDR notation and ranges from 0 to 128.
When configuring a static route, you can specify an outbound interface through interface-type interface-number, a next-hop IP address through nexthop-address, or both an outbound interface and a next-hop IP address. Set the parameters as required.
Every route requires a next-hop IP address. Before sending a packet, a device needs to search its routing table for the route matching the destination address in the packet using the longest match rule. The link layer can find the corresponding link-layer address and then forward the packet only when a next-hop IP address is available.
When specifying an outbound interface, note the following:
For a Point-to-Point (P2P) interface, if the outbound interface is specified, the next hop address is the address of the remote interface connected to the outbound interface.
Non-Broadcast Multiple-Access (NBMA) interfaces are applicable to Point-to-Multipoint networks. Therefore, IP routes and the mappings between IP addresses and link layer addresses are required. In this case, you need to configure next hop addresses.
An Ethernet interface is a broadcast interface and a virtual-template (VT) interface can be associated with multiple virtual access (VA) interfaces. If the Ethernet interface or the VT interface is specified as the outbound interface of a static route, the next hop cannot be determined because multiple next hops exist. Therefore, do not specify an Ethernet interface or a VT interface as the outbound interface unless necessary. If you need to specify a broadcast interface (such as an Ethernet interface) or a VT interface as the outbound interface, specify the associated next hop address.