Odd router brokenness

Leigh Porter leigh.porter at ukbroadband.com
Wed Nov 23 11:00:39 CST 2011



> -----Original Message-----
> From: Mark Radabaugh [mailto:mark at amplex.net]
> Sent: 23 November 2011 16:53
> To: NANOG list
> Subject: Re: Odd router brokenness
> 
> On 11/23/11 11:33 AM, Saku Ytti wrote:
> > On (2011-11-23 09:41 -0500), Mark Radabaugh wrote:
> >
> >> The question is:   How does a router break in this manner?    It
> >> appears to unintentionally be doing something different with traffic
> >> based on the source address, not the destination address.    I
> >> realize this can be done intentionally  - but that is not the case
> >> here (unless somebody isn't telling me something).
> > I don't think we can determine that it has anything to do with source
> > address based on data shown.
> > 38.104.148.5 could very well be 6500 and somehow broken adjacency to
> > 74.125.226.6, perhaps hardware adjacency having MTU of 0B, causing
> punt
> > which is rate-limited by different policer than TTL exceeded policer.
> >
> I was told the router was reloaded to resolve a CEF issue.  Not sure
> what was wrong with 'clear cef linecard'.


Now *that* brings back memories!

--
Leigh


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