----- Original Message -----
From: Federico Pelizza <[EMAIL PROTECTED]>
To: linux-ppp <[EMAIL PROTECTED]>
Sent: Thursday, May 27, 1999 9:59 AM
Subject: PPP packets
> I'm studying the PPP packets and I encounter something strange in the
first
> 2 octets that I transmit in every packet.
>
> C0 21 is the LCP protocol field
> 01 ist the code for ConfReq
> 01 ist the identifier,
> etc......
> but what is FF 03 ?????
The 1st two bytes are the HDLC like address and control field.
0xFF is the broadcast address.
0x03 is the unnumbered information (UI) control field.
They don't serve much of a purpose and get stripped once
address and control field compression (ACFC) LCP option
is negotiated.
Paul Fulghum [EMAIL PROTECTED]
Microgate Corporation www.microgate.com
9501 Capital of Texas Hwy
Austin, Texas 78759
(512)-345-7791
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