Link już poprawiony :)
A IOS to:
c3640-jk9o3s-mz.124-16a.bin

Zalezne od IOS - a co jak w openended takie cos trafi? Odpowiem jak przystało na informatyka: to zależy

Hejka,
Chyba rysunek 3 jest zle wklejony, bo jest taki sam jak nr 1 z trasa N1 jako preferowana.
Podaj info na jakim sofcie testowales, bo wcale bym sie nie zdziwil jesli dla rownych kosztow dzialaloby to roznie w roznych wersjach IOS. Do potestowania ;)
Pzdr.
Seba

ISIS and OSPF convergence is fast indeed but it could be faster. Please note that the initial SPF computation starts 5.5 seconds after the trigger. On the path of many routers in the large ISP it gives couple of minutes. Examples of timers listed in the post are the compilation of those recommended by Cisco as well as used in real life scenarios.

You are right that tunning timers should be done with caution. The backoff mechanism presented by the second-wait timer protects a network against instability. There are also other methods to speed up convergence. I will discuss it in the next post.

"There are several methods to speed up ISIS convergence. Using timers..."
But what are other methods ? Timers - it is rather obvious for every dynamic routing protocol. I think tuning timers in internetwork should be rather done with caution. In case of isis makes it any visible change ? Isis has fast convergence (!)indeed without that - but maybe I am wrong.

Tak tylko dodam ze bawilem sie calkiem niedawno vpn sslem junipera (SA4000) i jakbym mial porownac intuicyjnosc GUI/latwosc konfiguracji to juniper miazdzy cisco po prostu. Dla mnie czleka cisco centrycznego latwosc skonfigurowania junipera po prostu rzucila na kolana. ASA 8.0 to w porownaniu do SA4000 czarna magia wymagajaca 10 lat studiow :)))