Ethereal-users: Re: [Ethereal-users] A bit Offtopic: Ether Type 0x886d??

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From: "Erick B." <erickbe@xxxxxxxxx>
Date: Tue, 6 Feb 2001 18:02:29 -0800 (PST)
They might be keep alive packets for either Windows NT
server load balancing/failover or Intel NIC failover.
Both have their own ether type and I can't find them
at moment. Will see if I can find the info again...

--- "Jesus M. Salvo Jr." <jsalvo@xxxxxxxxxxxxxxxxx>
wrote:
> A bit offtopic, but ... I can't figure out what
> these ethernet packets 
> are with ether type 0x886d, which is being shown on
> ethereal, with 46 
> bytes of data.
> The source is a MAC address of whatever host it was
> being sent from, 
> while the destination is the broadcast address
> ff:ff:ff:ff:ff:ff.
> 
> There seems to be two hosts communicating with this
> ether type through 
> broadcast. One seems to be sending the payload, and
> the other seems to 
> be responding with the same payload .... then the
> data payload changes 
> ... etc .... Almost like an ICMP echo request and an
> ICMP echo reply.
> 
> I know 0x0800 is IP, but searching the RFC (
> www.normos.org )... there 
> does not seem to be an ether type 0x886d. The
> closest seems to be 0x8864 
> which is for PPPoE session.
> 
> Anyone knows what it is?
> 
> 
> 
> Here is an example:
> 
> 
> 
> Frame 69 (60 on wire, 60 captured)
>     Arrival Time: Feb  7, 2001 10:40:58.0219
>     Time delta from previous packet: 1.312458
> seconds
>     Time relative to first packet: 58.933777 seconds
>     Frame Number: 69
>     Packet Length: 60 bytes
>     Capture Length: 60 bytes
> Ethernet II
>     Destination: ff:ff:ff:ff:ff:ff
> (ff:ff:ff:ff:ff:ff)
>     Source: 00:d0:b7:48:b5:b7 (00:d0:b7:48:b5:b7)
>     Type: Unknown (0x886d)
> Data (46 bytes)
> 
>    0  0001 0001 2372 0300 0200 00d0 b748 b5b7  
> ....#r.......H..
>   10  0000 0000 0000 0000 0000 0000 0000 0000  
> ................
>   20  0000 0000 0000 0000 0000 0000 0000       
> ..............
> 
> Frame 70 (60 on wire, 60 captured)
>     Arrival Time: Feb  7, 2001 10:40:58.0219
>     Time delta from previous packet: 0.000002
> seconds
>     Time relative to first packet: 58.933779 seconds
>     Frame Number: 70
>     Packet Length: 60 bytes
>     Capture Length: 60 bytes
> Ethernet II
>     Destination: ff:ff:ff:ff:ff:ff
> (ff:ff:ff:ff:ff:ff)
>     Source: 00:b0:d0:22:26:1b (00:b0:d0:22:26:1b)
>     Type: Unknown (0x886d)
> Data (46 bytes)
> 
>    0  0001 0001 2372 0300 0100 00d0 b748 b5b7  
> ....#r.......H..
>   10  0000 0000 0000 0000 0000 0000 0000 0000  
> ................
>   20  0000 0000 0000 0000 0000 0000 0000       
> ..............
> 
> 
> John
> 
> 
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