Foundation Summary

The "Foundation Summary" section of each chapter lists the most important facts from the chapter. Although this section does not list every fact from the chapter that will be on your CCDA exam, a well-prepared CCDA candidate should at a minimum know all the details in each "Foundation Summary" before taking the exam.

This chapter has covered the following topics you need to master for the CCDA exam:

■ RIPv2—The enhancements in Version 2 of RIP to support network designs

■ RIPng—New RIP for IPv6 networks

■ EIGRP for IPv4—The enhanced version of IGRP and its uses in network design

■ EIGRP for IPv6—The modified version of EIGRP that supports IPv6 networks Table 10-4 compares the routing protocols covered in this chapter.

Table 10-4 Routing Protocol Comparisons

Characteristic

RIPv1

RIPv2

RIPng

EIGRP

EIGRP for IPv6

Distance vector

Yes

Yes

Yes

DV/Hybrid

DV/Hybrid

VLSMs

No

Yes

Yes

Yes

Yes

Authentication

No

Yes

No

Yes

Yes

Update timer (sec)

30

30

90

Invalid timer (sec)

180

180

180

Flush timer (sec)

240

240

240

Holddown timer (sec)

180

180

180

Protocol/port

UDP 520

UDP 520

UDP 521

IP 88

Next Header 88

Admin distance

120

120

120

90

90

IP version

IPv4

IPv4

IPv6

IPv4

IPv6

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