[j-nsp] L3 incompletes

[Paul Goyette]

I didn't say "only" ATM, only "most often ATM"  :)

The definition still stands - the length field of the L3 header
requires more data than is available in the L2 frame.

-----Original Message-----
From: Phil Rosenthal [mailto:pr at isprime.com]
Sent: Monday, December 08, 2003 7:30 PM
To: Paul Goyette
Cc: <juniper-nsp at puck.nether.net>
Subject: Re: [j-nsp] L3 incompletes


We have no ATM cards in our Juniper producing this, all Gig-E's doing 
802.1q to BigIrons, which have no ATM cards in them either.

-Phil
On Dec 8, 2003, at 9:51 PM, Paul Goyette wrote:

> L3 incomplete means that the datagram received by layer 2 does
> not have enough data to match the l3 header.
>
> For example, if you get a 64-byte Ethernet packet where the IP
> header says length is 200 bytes, that's L3 Incomplete.
>
> Most frequently seen in ATM where a missed cell causes a short
> packet;  usually but not always the AAL5 CRC will catch it...
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of Eric Van Tol
> Sent: Monday, December 08, 2003 6:37 AM
> To: juniper-nsp at puck.nether.net
> Subject: RE: [j-nsp] L3 incompletes
>
>
> Policed discards are the CDP packets.  CDP is a layer 2 protocol, not
> layer 3.
>
> -----Original Message-----
> From: Christopher Morrow [mailto:morrowc at ops-netman.net]
> Sent: Sunday, December 07, 2003 10:39 PM
> To: jeff at groth.com
> Cc: 'Phil Rosenthal'; juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] L3 incompletes
>
>
>
> On Dec 8, 2003, at 2:26 AM, Jeff Groth wrote:
>
>> That was my understanding as well.  CDP packets.
>>
>> Jeff
>> (currently on Juniper withdrawal)
>>
>>
>
> Could you not log based on packet size SMALLER than the limit that
> would equal the 'incompletes' size and see what got logged?
>
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--Phil Rosenthal
ISPrime, Inc.