The Eigrp Packet Header

Packet Format

Figure 8.28 shows the EIGRP header, which begins every EIGRP packet. Figure 8.28. The EIGRP packet header. Figure 8.28. The EIGRP packet header. Version specifies the particular version of the originating EIGRP process. Although two software releases of EIGRP are currently available, 11 the version of the EIGRP process itself has not changed since its release. 11 Because of the improvements to its stability beginning with IOS 10.3(11), 11.0(8), and 11.1(3) use of the later version of EIGRP is...

Case Study Route Tagging

Figure 14.17 shows a situation in which routes from several routing domains, each running a separate routing protocol, are being redistributed into a single transit domain running OSPF. On the other side of the OSPF cloud, the routes must be redistributed back into their respective domains. Route filters can be used at the egress points from the OSPF cloud into each domain to permit only the routes that belong to that domain. However, if each domain has many routes or if the routes within the...

Appendix E Solutions to Configuration Problems

Chapter 2 Chapter 3 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 13 Chapter 14 1 The first octet rule says that the highest class C address is 223, but it is known that for eight bits the highest decimal number is 255. There are two more classes Class D addresses are for multicast, and class E addresses are for experimental usage. Class D addresses have, as their first four bits, 1110. What is the decimal range of the first octet of class D addresses A If the...