CCIE R&S Written Exam Study Day6

今天伴隨著2009 F1澳洲大賽的開幕戰，繼續著我的學習，今天是EIGRP，由於先前在外商銀行那裡學習到了EIGRP的控制方法，所以於是乎也算是複習，比較好玩的的是當有EIGRP Input Events時造成topogoly重新計算時，Router會優先選擇他本身的topology table，當然方法如下：

■ If FS routes exist, install the lowest-metric FS route into the routing table, and send Updatesto neighbors to notify them of the new route.
■ If no FS route exists, actively query neighbors for a new route.

To be an FS route, a route must meet the feasibility condition, defined as follows:

The RD must be lower than this router’s current FD for the route.

若是本身的計算結果無法滿足成為routing的條件時，當然爾會query neighbors，但是其他人要是沒有這樣的路由時，路由器本身就會Going Active on a Route，重新將topology table中本來的FD移除，使用比較大的FD的路徑。

Part I: LAN Switching - 累積時間共9HR
3/23 - Chapter 1: Ethernet Basics - 3HR
3/24 - Chapter 2: Virtual LANs and VLAN Trunking - 3HR
3/25 - Chapter 3: Spanning Tree Protocol - 3HR

Part II: IP - 累積時間共4HR
3/26 - Chapter 4: IP Addressing - 3HR
3/28 - Chapter 5: IP Services - 1HR

Part III: IP Routing - 累積時間共4HR
3/28 - Chapter 6: IP Forwarding (Routing) - 1HR
3/28 - Chapter 7: RIP Version 2 - 1HR
3/29 - Chapter 8: EIGRP - 2HR(今天完成)

Until Now Total: 17HR