The directly connected static IPv6 route is the best solution in the routing when CEF is not working on the router. In the old Cisco IOs before 12.0 versions, this is the best solution to avoid recursive routing. This is also best in point-to-point networks. It is also best an alternative to using the next-hop IPv6 address to specify the exit interface. The following figure illustrates the directly connected static IPv6 route configured on Router1 using the exit Interface.
Figure 2 illustrates the IPv6 routing table for Router1. When a packet is destined for 2001:AD10:110B::/64 network; Router1 looks in the routing table for a match and finds that; it can forward the packet out of its Fast Ethernet 0/0 interface. So, it is not required any other routing table lookups.
You can also verify the routing table looks different for the route configured with the next-hop IP address and an exit interface. Configuring a directly connected static route with an exit interface allows the routing table to resolve the exit interface in a single search instead of multiple searches. Therefore it resolves the recursive routing problem without using CEF. The administrative distance is 1, for the directly connected IPv6 route.
Only the IP address of the next-hop IPv6 is specified in next-hop static Pv6 route. The exit interface is derived from the next hop. For example, in Figure 1, three next-hop static routes are configured on Router 0. Before forwarding any packet, the router process must resolve the route to determine the exit interface to […]
As we already discussed in the next-hop option – ip route command (ipv4) article that it is a routing term uses for the next neighboring router a data packet can go through. The IPv6 route next-hop is along with the series of routers that are connected simultaneously in a network and is the next possible destination for […]
If you learn how to configure a static route for IPv4 then you can easily configure and understand the IPv6 static routes. The configuration and syntax for IPv6 static routes are similar to IPv4 static route. There is an only minor difference between IPv4 and IPv6 static routes. The static routes for IPv6 are configured using the […]
A default static route is a route, that represents any network, not in the routing table of that router. Routers normally use default routes that are configured locally or learned from another router, using a dynamic routing protocol. A default route is used when there is no other routes match in the routing table for […]
Another way to configure a static route is the option of using the exit interface to specify the next-hop address. Before the CEF, this method is used to avoid the recursive lookup problem. But now the CEF resolve the recursive lookup problem. In Figure 1, the same topology that we already discussed in the previous […]
in this lesson, we are going to configure static route using the IP address of the next-hop. The router derived the exit interface from the next hop. For example, in Figure 1, three static routes configured on Router0 using the IP address of the next hop, Router1. You can also see the Routing table for […]
The next-hop is a routing term uses for the next neighboring router a data packet can go through. The next hop is along with the series of routers that are connected simultaneously in a network and is the next possible destination for a data packet. Each individual router maintains its own routing table with a next hop […]
In this article, I am going to explain the “IP route” command and its parameter, argument, and options in detail. IP route command is used to configure the static route. Static routes are the most secure way of routing. They will also increase overall network performance. These features are extremely helpful in a small network. […]