How do I summarize a route in OSPF?

To consolidate and summarize routes at an area boundary, use the area range command in the router configuration mode. The ABR will summarize routes for a specific area before injecting them into a different area via the backbone as type 3 summary LSAs.

How do I use IPv6 with OSPF?


  1. Complete the OSPF network strategy and planning for your IPv6 network.
  2. Enable IPv6 unicast routing.
  3. Enable IPv6 on the interface.
  4. Configure the IP Security (IPsec) secure socket application program interface (API) on OSPF for IPv6 in order to enable authentication and encryption.

Does OSPF work with IPv6?

OSPF is a widely used IGP in IPv4, IPv6, and dual-stack (IPv4/IPv6) environments. The OSPF upgrade to support IPv6 generated a number of significant changes to how the protocol behaves.

Does OSPF support route summarization?

Route summarization helps reduce OSPF traffic and route computation. OSPF, unlike EIGRP, doesn’t support automatic summarization. Also, unlike EIGRP, where you can summarize routes on every router in an EIGRP network, OSFP can summarize routes only on ABRs and ASBRs.

What is OSPF summary address command?

The summary-address command works by summarizing external routes. Try “redistributing connected subnet” on the spoke and make sure you don’t advertise the loopbacks into OSPF as internal OSPF routes.

How do you perform an inter-area summarization in OSPF?

  1. OSPF is link state routing protocol that works on the concept of areas.
  2. Summarization between areas can be done on ABR by using single command under OSPF process:
  3. A) area-id= Identifier of the area about which routes are to be summarized.
  4. B) [ ip-address ] [mask]= Summary route to be advertise in areas.

What is point to point in OSPF?

A point-to-point connection is a serial link that connects two routers, making them Open Shortest Path First (OSPF) neighbors. Point-to-point connections are supported for i5/OS in an OSPF environment.

What is OSPF protocol?

The OSPF stands for Open Shortest Path First. It is a widely used and supported routing protocol. It is an intradomain protocol, which means that it is used within an area or a network. It is an interior gateway protocol that has been designed within a single autonomous system. The goal of routing is to learn routes.

What protocol does OSPF run on?

OSPF is developed by Internet Engineering Task Force (IETF) as one of the Interior Gateway Protocol (IGP), i.e, the protocol which aims at moving the packet within a large autonomous system or routing domain. It is a network layer protocol which works on the protocol number 89 and uses AD value 110.

What is OSPF v3?

OSPFv3 is the Open Shortest Path First routing protocol for IPv6. It is similar to OSPFv2 in its concept of a link state database, intra- and inter-area, and AS external routes and virtual links. It is possible to enable OSPF and OSPFv3 at the same time. OSPF works with IPv4, and OSPFv3 works with IPv6.

Which is better Eigrp or OSPF?

Both of them could be widely deployed in Internet Protocol (IP) networks for data communication. EIGRP is a popular choice for routing within small and big campus networks. While OSPF is the best choice when your network hardware devices come from various vendors.

How do you perform an inter area summarization in OSPF?

How does OSPFv3 support for IPv6 routing?

OSPFv3, which is described in RFC 5340, expands on OSPF version 2 to provide support for IPv6 routing prefixes and the larger size of IPv6 addresses. In OSPFv3, a routing process does not need to be explicitly created. Enabling OSPFv3 on an interface will cause a routing process, and its associated configuration, to be created.

What’s the difference between OSPF and OSFP route summarization?

Unlike EIGRP, OSPF doesn’t support automatic summarization. Also, unlike EIGRP, where you can summarize routes on every router in an EIGRP network, OSFP can summarize routes only on ABRs and ASBRs. Route summarization helps minimizes OSPF traffic and reduces route computation. In the example above we have a network of three routers and two hosts.

How many IP addresses can be imported into OSPFv3?

The default maximum paths is 16, and the range is from 1 to 64. When importing the set of addresses specified on an interface on which OSPFv3 is running into OSPFv3, you cannot select specific addresses to be imported. Either all addresses are imported, or no addresses are imported.

How to summarize the OSPF CCNA study guide?

In this case, router R1 thinks that R2 has routes for all subnets in the range – When summarizing, try to be as specific as possible. Download our Free CCNA Study Guide PDF for complete notes on all the CCNA 200-301 exam topics in one book.