[j-nsp] ppp problem between j2300 & Telindus 1030

Stacy W. Smith stacy at acm.org
Tue May 17 13:38:55 EDT 2005


Looks like the Telindus converter is sending IPCP configuration options 
0x81-0x84 (decimal 129-132) that the J2300 refuses to accept.

http://www.iana.org/assignments/ppp-numbers
  129       Primary DNS Server Address                       [RFC1877]
  130       Primary NBNS Server Address                      [RFC1877]
  131       Secondary DNS Server Address                     [RFC1877]
  132       Secondary NBNS Server Address                    [RFC1877]

--Stacy


On 17 May 2005, at 00:48, Le Hai Dang wrote:

> Hi all,
>
> I have problem with ppp connection between j2300 & Telindus 1030
> routers. NCP is not up & stops at inet "Conf-req-sent".
>
> j2300 ---v35----- Telindus_converter -----e1------- Telindus 1030.
>
> Just have a simple config on j2300:
> ==================================
> root> show configuration interfaces se-0/0/2
> encapsulation ppp;
> serial-options {
>     clock-rate 2.0mhz;
> }
> unit 0 {
>     family inet {
>         address 192.168.3.1/30;
>     }
> }
>
> Physical link & LCP is up:
> ==============================================
> root> show interfaces se-0/0/2 extensive
> Physical interface: se-0/0/2, Enabled, Physical link is Up
>   Interface index: 139, SNMP ifIndex: 37, Generation: 20
>   Type: Serial, Link-level type: PPP, MTU: 1504, Maximum speed: 8mbps
>   Device flags   : Present Running
>   Interface flags: Point-To-Point 16384
>   Link flags     : Keepalives
>   Hold-times     : Up 0 ms, Down 0 ms
>   Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
>   Keepalive statistics:
>     Input : 112 (last seen 00:00:00 ago)
>     Output: 183 (last sent 00:00:09 ago)
>   LCP state: Opened
>   NCP state: inet: Conf-req-sent, inet6: Not-configured, iso:
> Not-configured, mpls:
>   Not-configured
>   CHAP state: Not-configured
>   CoS queues     : 8 supported
>   Last flapped   : 2005-05-17 02:54:58 UTC (00:37:11 ago)
>   Statistics last cleared: Never
>   Traffic statistics:
>    Input  bytes  :              6439006                15288 bps
>    Output bytes  :              5595590                13272 bps
>    Input  packets:               170182                   50 pps
>    Output packets:               170232                   50 pps
>   Input errors:
>     Errors: 3, Drops: 0, Framing errors: 5, Runts: 0, Giants: 3,
>     Policed discards: 0, Resource errors: 6
>   Output errors:
>     Carrier transitions: 3, Errors: 0, Drops: 0, MTU errors: 0,
>     Resource errors: 0
>   Serial media information:
>     Line protocol: v.35
>     Resync history:
>       Sync loss count: 0
>     Data signal:
>       Rx Clock: OK
>     Control signals:
>       Local mode: DTE
>       To DCE: DTR: up, RTS: up
>       From DCE: CTS: up, DCD: up, DSR: up
>     Clocking mode: loop-timed
>     Clock rate: 2.0 MHz
>     Loopback: none
>     Tx clock: non-invert
>     Line encoding: nrz
>   Packet Forwarding Engine configuration:
>     Destination slot: 0, PLP byte: 1 (0x00)
>     CoS transmit queue               Bandwidth               Buffer
> Priority   Limit
>                               %            bps     %          bytes
>     0 best-effort            95        7600000    95              0
>   low    none
>     3 network-control         5         400000     5              0
>   low    none
>
>   Logical interface se-0/0/2.0 (Index 66) (SNMP ifIndex 39) 
> (Generation 5)
>     Flags: Point-To-Point SNMP-Traps Encapsulation: PPP
>     Protocol inet, MTU: 1500, Generation: 9, Route table: 0
>       Flags: Protocol-Down, Is-Primary
>       Addresses, Flags: Dest-route-down Is-Default Is-Preferred 
> Is-Primary
>         Destination: 192.168.3.0/30, Local: 192.168.3.1, Broadcast: 
> 192.168.3.3,
>         Generation: 15
>
> root>
>
>
> + Connecting the same e1 link from the converter to an M box shows no
> problem at all. And the point here is Telindous router works well with
> Cisco box in this case.
>
> + Traffic monitoring at serial link of j2300 shows:
>
> ========================
>
> root> monitor traffic interface se-0/0/2 extensive layer2-headers
> Listening on se-0/0/2, capture size 96 bytes
>
> 03:31:52.954149  In   38 03 IPCP: IPCP configure request       (type
> 0x01  id 0x0b  len 0x0022)
>   IPCP OPTION: address                        (type 0x03 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x81 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x82 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x83 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x84 len 0x06)
> 03:31:52.954169 Out   32 03 IPCP: IPCP configure negative ack  (type
> 0x03  id 0x0b  len 0x001c)
>   IPCP OPTION: UNKNOWN                        (type 0x81 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x82 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x83 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x84 len 0x06)
> 03:31:52.964150  In   38 03 IPCP: IPCP configure request       (type
> 0x01  id 0x0c  len 0x0022)
>   IPCP OPTION: address                        (type 0x03 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x81 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x82 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x83 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x84 len 0x06)
> 03:31:52.964167 Out   32 03 IPCP: IPCP configure negative ack  (type
> 0x03  id 0x0c  len 0x001c)
>   IPCP OPTION: UNKNOWN                        (type 0x81 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x82 len 0x06)
>   IPCP OPTION: UNKNOWN                        (type 0x83 len 0x06^C
> 280 packets received by filter
> 0 packets dropped by kernel
>
> Any idea ?
>
> thks,
>
> Dang
>
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