[nsp] Ethernet/G.703 converter & Cisco G.703 interface

[Gert Doering]

Hi,

On Mon, Apr 26, 2004 at 09:28:42PM +0300, Artem Naluzhny wrote:
> I've tried to configure bridging on my router:
> 
> controller E1 1/0
>   channel-group 0 timeslots 1-31
> !
> bridge irb
> !
> interface Serial1/0:0
>   no ip address
>   bridge-group 1
>   bridge-group 1 spanning-disabled
> !
> interface BVI1
>   ip address 10.255.254.1 255.255.255.0

This "could" work.

> But all packets I receives from ethernet port of the converter are 
> prepended with strange four bytes: 0f 00 65 58 (I'm using tcpdump). This 
> header is not changed in time. There is usual packet with mac and ip 
> headers after this fragment.
> 
> Any ideas?

This could be the Cisco-HDLC header.  Or something else prepended by 
the "Cisco half-bridge" to the packets.

Does the converter have any options for packet type, framing type, or
anything?

gert

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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de