What is the maximum number of paths equal load balancing can support?

What is the maximum number of paths equal load balancing can support?

For IP, Cisco IOS Software applies load balancing across up to four equal-cost paths by default. With the maximum-paths maximum-path router configuration command, up to 16 equal-cost routes can be kept in the routing table.

What is the default number of equal cost routes RIPv2 will load balance?

RIP can load-balance over six equal-cost paths (the default is 4). Only one network mask can be used for each classful network (RIPv1). RIPv2 permits variable-length subnet masks on the internetwork.

How many dynamic routing protocols are there?

Dynamic routing protocols can be categorized into two groups: Interior gateway protocols (IGP) and Exterior Gateway Routing Protocols (EGP).

Can more than one dynamic routing protocol be used on a single router?

In most networks, a single dynamic routing protocol is used; however, there are cases where different parts of the net- work can use different routing protocols. Since the early 1980s, several different dynamic routing protocols have emerged.

Which routing protocol can be configured to allow unequal cost load balancing?

One of the advantages of EIGRP is that, unlike OSPF and many other routing protocols, EIGRP also supports unequal-cost load balancing. You can set up your router to load balance over links with different metric to reach the destination.

What is equal cost load balancing?

Equal-cost load balancing, as its name implies, is the balancing of a traffic load across redundant links of equal cost. This alleviates the potential for problems caused by per-packet load balancing but can result in a somewhat less than perfect distribution of traffic across equal-cost links.

What is the default maximum number of equal cost paths that can be placed into the routing table of a Cisco OSPF router?

By default, the Cisco router supports up to four equal-cost paths to a destination for OSPF.

What is equal cost load balancing in OSPF?

Equal-cost multi-path allows a router to insert more than one path to a destination in the routing table to enable load balancing. Here’s how ECMP works and how to configure it in OSPF. At this point the router will load-share traffic over both next hops when traffic is destine for network Z.

Which is dynamic routing protocol?

OSPF is the dynamic routing protocol used in large to very large IP networks. The protocol uses a link-state database and link-state advertisements to map the network topology. This topological map is used with the link-state algorithm to determine the best route available.

Where is dynamic routing used?

Dynamic routing protocols work well in any type of network consisting of several routers. They are scalable and automatically determine better routes if there is a change in the topology. Although there is more to the configuration of dynamic routing protocols, they are simpler to configure in a large network.

What is the main difference of dynamic routing compared to static one?

In static routing, user defined routes are used in routing table. In dynamic routing, routes are updated as per the changes in network. No complex algorithm used to figure out shortest path.

What are two functions of dynamic routing protocols choose two?

Dynamic routing protocols exist to discover the network, maintain routing tables, and calculate the best path.

What does equal cost load balancing mean in routing?

Equal-cost load balancing, as its name implies, is the balancing of a traffic load across redundant links of equal cost. Figure 10-3 illustrates this in a small network, and the contents of Router A’s routing table are presented in Table 10-4.

How many equal cost paths can a Cisco router support?

By default, the Cisco router supports up to four equal-cost paths to a destination for OSPF. Use the maximum-paths command under the OSPF router process configuration mode to set the number of equal-cost paths in the routing table, as shown in Example 4-8.

Why does routing table limit number of paths?

It is inherent to the forwarding process in the router, and it enables a router to use multiple paths to a destination when it forwards packets. The number of paths used is limited by the number of entries that the routing protocol puts in the routing table.

How does unequal cost path load balancing ( variance ) work in IGRP?

In addition, Interior Gateway Routing Protocol (IGRP) and EIGRP also support unequal cost path load balancing. Use the variance n command in order to instruct the router to include routes with a metric of less than n times the minimum metric route for that destination. The variable n can take a value between 1 and 128.