nanog mailing list archives
Re: Withdrawls and announcements attempt 2
From: avg () postman ncube com (Vadim Antonov)
Date: Fri, 21 Jun 1996 13:15:24 +0800
The 30 second figure sounds pretty much like the good ol' line flap with default cisco keepalive. I was bothering cisco folks about making static routes persistent by default for quite a while. Although there's a workaround very few people actually bother to use it thus causing bouncing tail links to produce route flap. My suspiction is that this kind of flap accounts for no less than 90% of the total. Another probable contributor is RIP (shouldn't we declare it RIP already?) Most network administrators never heard of a simple maxim -- "Never use dynamic routing when you have a single path". As a result most LANs are plagued by RIP with no reason whatsoever (and many of them inject their IGP routes into BGP!) The lack of any meaningful clock source negotiation and idiotic defaults in CSU/DSUs is a major source of rapid link flap, too. It seems that most (if not all) equipment vendors simply don't have any clue of what effect their design choices have in the real world. --vadim - - - - - - - - - - - - - - - - -
Current thread:
- Re: Withdrawls and announcements attempt 2, (continued)
- Re: Withdrawls and announcements attempt 2 Marten Terpstra (Jun 21)
- Re: Withdrawls and announcements attempt 2 Craig Labovitz (Jun 21)
- Re: Withdrawls and announcements attempt 2 Avi Freedman (Jun 21)
- Re: Withdrawls and announcements attempt 2 Craig Labovitz (Jun 21)
- Re: Withdrawls and announcements attempt 2 Curtis Villamizar (Jun 21)
- Re: Withdrawls and announcements attempt 2 Sean Doran (Jun 21)
- Re: Withdrawls and announcements attempt 2 Curtis Villamizar (Jun 21)
- Re: Withdrawls and announcements attempt 2 Yakov Rekhter (Jun 21)
- Re: Withdrawls and announcements attempt 2 Curtis Villamizar (Jun 21)
- Re: Withdrawls and announcements attempt 2 Sean Doran (Jun 21)
- Re: Withdrawls and announcements attempt 2 Yakov Rekhter (Jun 21)
- Re: Withdrawls and announcements attempt 2 Steven J. Richardson (Jun 21)
- Re: Withdrawls and announcements attempt 2 Vadim Antonov (Jun 21)
- Telco discussions Rob Gutierrez (Jun 21)
- Re: Withdrawls and announcements attempt 2 Marten Terpstra (Jun 21)