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Module 7- RIPv2 CCNA Exploration 4.0 1 Overview Học viện mạng Bach Khoa - Website: www.bkacad.com 2 RIPv1 Limitations Học viện mạng Bach Khoa - Website: www.bkacad.com 3 Lab Topology • • This topology is discontiguous and will not converge because 172.30.0.0/16 is divided by the 209.165.200.0/24. R2 router has a static summary route to the 192.168.0.0/16 network. For now, understand that this summary route will cause problems with RIPv1 because 192.168.0.0/16 is not a major classful address and includes all of the /24 versions of 192.168.0.0/16. Học viện mạng Bach Khoa - Website: www.bkacad.com 4 RIPv1: Discontiguous Networks • • • You already know that RIPv1 is a classful routing protocol. As you can see in the RIPv1 message format, It does not include the subnet masks in its routing updates. Therefore, RIPv1 cannot support discontiguous networks, VLSM, or Classless Inter-Domain Routing (CIDR) supernets. Học viện mạng Bach Khoa - Website: www.bkacad.com 5 RIPv1: Discontiguous Networks • Because the subnet mask is not included in the update, RIPv1 and other classful routing protocols must summarize networks at major network boundaries. Học viện mạng Bach Khoa - Website: www.bkacad.com 6 Configuring RIPv2 Học viện mạng Bach Khoa - Website: www.bkacad.com 7 Enabling and Verifying RIPv2 • • The Next Hop address is used to identify a better next-hop address - if one exists - than the address of the sending router. If the field is set to all zeros (0.0.0.0), the address of the sending router is the best next-hop address. Học viện mạng Bach Khoa - Website: www.bkacad.com 8 Enabling and Verifying RIPv2 Học viện mạng Bach Khoa - Website: www.bkacad.com 9 Auto-summary and RIPv2 • By default, RIPv2 automatically summarizes networks at major network boundaries, just like RIPv1. Học viện mạng Bach Khoa - Website: www.bkacad.com 10