[cisco-bba] PPP UNKNOWN

[Dennis Peng]

That's pretty strange. It looks like a SNAP encapsulated IP packet
that we are receiving. You can see the 0xAAAA03 000000 0800 LLC/SNAP
header which indicates an IP packet and then it goes right into a
0x4500 IP header.

Dennis

Anastassios Chatzithomaoglou [achatz at forthnet.gr] wrote:
> These are also some other debug messages we are getting....
> 
> Jun 30 14:56:50.513: Vi11 LCP: O ECHOREQ [Open] id 29 len 12 magic 
> 0x1DCD301F
> Jun 30 14:56:50.853: Vi11 LCP-FS: I ECHOREP [Open] id 29 len 12 magic 
> 0x00000000
> Jun 30 14:56:50.853: Vi11 LCP-FS: Received id 29, sent id 29, line up
> Jun 30 14:57:08.965: Vi11 PPP: I pkt type 0xAAAA, datagramsize 102 
> link[illegal]
> Jun 30 14:57:08.965: Vi11 : I CONFNAK [Not negotiated] id 0 len 0
> Jun 30 14:57:08.965: Vi11 LCP: O PROTREJ [Open] id 37 len 104 protocol
> Jun 30 14:57:08.965: Vi11 LCP:  (0xAAAA0300000008004500005C14F80000)
> Jun 30 14:57:08.965: Vi11 LCP:  (0x3C1148909000000A900000FF02080208)
> Jun 30 14:57:08.965: Vi11 LCP:  (0x00486F660202000000020000C0A80100)
> Jun 30 14:57:08.965: Vi11 LCP:  (0xFFFFFF009000000A0000000100020002)
> Jun 30 14:57:08.965: Vi11 LCP:  (0xD510B400FFFFFF009000000A00000001)
> Jun 30 14:57:08.965: Vi11 LCP:  (0x0002FFFF000000000000000000000000)
> Jun 30 14:57:08.965: Vi11 LCP:  (0x00000001)
> Jun 30 14:57:38.966: Vi11 PPP: I pkt type 0xAAAA, datagramsize 102 
> link[illegal]
> Jun 30 14:57:38.966: Vi11 : I CONFNAK [Not negotiated] id 0 len 0
> Jun 30 14:57:38.966: Vi11 LCP: O PROTREJ [Open] id 38 len 104 protocol
> Jun 30 14:57:38.966: Vi11 LCP:  (0xAAAA0300000008004500005C14FB0000)
> Jun 30 14:57:38.966: Vi11 LCP:  (0x3C11488D9000000A900000FF02080208)
> Jun 30 14:57:38.966: Vi11 LCP:  (0x00486F660202000000020000C0A80100)
> Jun 30 14:57:38.966: Vi11 LCP:  (0xFFFFFF009000000A0000000100020002)
> Jun 30 14:57:38.966: Vi11 LCP:  (0xD510B400FFFFFF009000000A00000001)
> Jun 30 14:57:38.966: Vi11 LCP:  (0x0002FFFF000000000000000000000000)
> Jun 30 14:57:38.966: Vi11 LCP:  (0x00000001)
> 
> 
> Anastassios Chatzithomaoglou wrote:
> 
> >PPPoE (LLC/SNAP) & PPPoA (VCMUX) is done by our telco's router which 
> >forwards l2tp sessions to our router. We just terminate the l2tp sessions.
> >
> >Is this a problem with telco's router or with customer's modem?
> >
> >Most customers don't have such debugs...
> >
> >BALIGANT Francois WANADOO wrote:
> >
> >>    0xAAAA would match PPPoE over ATM using AAL5 LLC encapsulation 
> >>format.
> >>
> >>    Is this something you are normaly accepting ?
> >>
> >>    regards,
> >>    Francois
> >>
> >>-----Message d'origine-----
> >>De : Anastassios Chatzithomaoglou [mailto:achatz at forthnet.gr]
> >>Envoy? : lundi 30 juin 2003 12:58
> >>? : cisco-bba at puck.nether.net
> >>Objet : [cisco-bba] PPP UNKNOWN
> >>
> >>
> >>I'm getting quite a lot of these debug logs for some customers:
> >>
> >>Jun 30 13:49:32.465: Vi14 : I UNKNOWN(255) [Not negotiated] id 3 len 
> >>43690
> >>Jun 30 13:49:32.469: Vi14 LCP: O PROTREJ [Open] id 2 len 6 protocol  
> >>(0xAAAA)
> >>Jun 30 13:49:40.841: Vi8 : I UNKNOWN(255) [Not negotiated] id 3 len 43690
> >>Jun 30 13:49:40.841: Vi8 LCP: O PROTREJ [Open] id 228 len 6 protocol  
> >>(0xAAAA)
> >>
> >>Any idea what it might be?
> >>
> >>PS: Router is a 7206 (12.3(1)) - used as a LNS.
> >>
> >
> 
> -- 
> ***********************************
>    Chatzithomaoglou Anastasios
> Network Design & Operations Center
>           FORTHnet S.A.
>       <achatz at forthnet.gr>
> ***********************************
> 
> _______________________________________________
> cisco-bba mailing list
> cisco-bba at puck.nether.net
> http://puck.nether.net/mailman/listinfo/cisco-bba

-- 
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      ||        ||                                 Dennis Peng
      ||        ||        Cisco Systems, Inc.      Escalation Engineer
     ||||      ||||       170 West Tasman Drive    Phone: (408) 526-6143
 ..:||||||:..:||||||:..   San Jose, CA 95134       Fax:   (408) 232-2343
   Cisco Systems Inc.                              dpeng at cisco.com
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