[j-nsp] L3 incompletes

Chris Robb chrobb at indiana.edu
Sat Dec 6 16:02:57 EST 2003

I believe we've always believed they were CDP packets. Dunno where that  
thought originated from, but I'd be interested if anyone else has dug  
any deeper.


On Dec 5, 2003, at 3:40 PM, Phil Rosenthal wrote:

> I noticed that all of my links between my Junipers and my Bigirons  
> that are doing vlan tagging have about 4 "L3 incompletes" per second  
> (monitor interface ge-x/y/z).
> Per juniper:  
> http://www.junipernetworks.lt/techpubs/software/junos/junos55/ 
> swcmdref55-interfaces/html/vt-monitor2.html
> 	◦ 	L3 incompletes
> This counter is incremented when the incoming packet fails Layer 3  
> (usually IPv4) sanity checks of the header. For example, a frame with  
> less than 20 bytes of available IP header would be discarded and this  
> counter would be incremented.
> Has anyone ever bothered to try to figure out what these packets are?
> --Phil Rosenthal
> ISPrime, Inc.
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Chris Robb
Indiana University Global NOC Engineer
chrobb at indiana.edu  Desk: 812-855-8604

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