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New Member

Non-NCP Packet

I am setting up a dial backup.

when the dial link comes up, i get reply to pings from the remote end for a while and then begins to time-out after a few minutes.

a ppp packet debug on the central router shows:

UNKNOWN (0X5CE6):Non-NCP packet,discarding.

i am able to telnet to the remote router but unable to ping any of the dial interfaces.

any help?

4 REPLIES
Silver

Re: Non-NCP Packet

You seem to be running into "CSCin37510: PPP pkts getting discarded says Non-NCP packet" ...What image are you running presently?

Thanks, Mak.

New Member

Re: Non-NCP Packet

I doubt if it has to do with CSC.

I am using 3640 (IOS: c3640-i-mz.122-5d.bin) and the remote is 1751v IOS:c1700-k9o3sv3y7-mz.122-8.T4.bin).

the setup scenario is this:Two 3640's and the remote router are linked via OSPF. one 3640 has the primary link to the remote while the other has 16-AM .when the primary link goes down, we have a static route (with high metric) to initiate the dial from the remote.

authentication is successful. remote begins to respond to ping but begins timing out shortly thereafter

Silver

Re: Non-NCP Packet

Not sure why you feel it's not related to the bug CSCin37510, I would think that instead of packet type 0x0021 ping reply contains a packet type of 0x000, so it decleared as a Non-NCP packet and discarded.

Can you please collect the following outputs (on the router that says a non-NCP packet) for a new call & followed by a ping:

deb ppp packet / deb ppp error / deb ppp nego

Thanks, Mak.

New Member

Re: Non-NCP Packet

Hi Mak,

please find below part of the capture

regards

adoboe

.............

..........................

17179869184d17179869184h: Call Handle failed for Modem 3/1

17179869184d17179869184h: As98 PPP: I pkt type 0xC021, datagramsize 29

17179869184d17179869184h: As98 PPP: I pkt type 0xC021, datagramsize 29

4d04h: As98 LCP: I CONFREQ [Closed] id 4 len 25

4d04h: As98 LCP: ACCM 0x000A0000 (0x0206000A0000)

4d04h: As98 LCP: AuthProto CHAP (0x0305C22305)

4d04h: As98 LCP: MagicNumber 0x0A24BE4A (0x05060A24BE4A)

4d04h: As98 LCP: PFC (0x0702)

4d04h: As98 LCP: ACFC (0x0802)

4d04h: As98 LCP: Lower layer not up, Fast Starting

4d04h: As98 PPP: Treating connection as a callin

4d04h: As98 PPP: Phase is ESTABLISHING, Passive Open [0 sess, 0 load]

4d04h: As98 LCP: State is Listen

4d04h: As98 LCP: O CONFREQ [Listen] id 114 len 25

4d04h: As98 LCP: ACCM 0x000A0000 (0x0206000A0000)

4d04h: As98 LCP: AuthProto CHAP (0x0305C22305)

4d04h: As98 LCP: MagicNumber 0x1F3538A3 (0x05061F3538A3)

4d04h: As98 LCP: PFC (0x0702)

4d04h: As98 LCP: ACFC (0x0802)

4d04h: As98 LCP: O CONFACK [Listen] id 4 len 25

4d04h: As98 LCP: ACCM 0x000A0000 (0x0206.000A0000)

4d04h: As98 LCP: AuthProto CHAP (0x0305C22305)

4d04h: As98 LCP: MagicNumber 0x0A24BE4A (0x05060A24BE4A)

4d04h: As98 LCP: PFC (0x0702)

4d04h: As98 LCP: ACFC (0x0802)

4d04h: %LINK-3-UPDOWN: Interface Async98, changed state to up

17179869184d17179869184h: As98 PPP: I pkt type 0xC021, datagramsize 29

17179869184d17179869184h: As98 PPP: I pkt type 0xC021, datagramsize 29

4d04h: As98 LCP: I CONFACK [ACKsent] id 114 len 25

4d04h: As98 LCP: ACCM 0x000A0000 (0x0206000A0000)

4d04h: As98 LCP: AuthProto CHAP (0x0305C22305)

4d04h: As98 LCP: MagicNumber 0x1F3538A3 (0x05061F3538A3)

4d04h: As98 LCP: PFC (0x0702)

4d04h: As98 LCP: ACFC (0x0802)

4d04h: As98 LCP: State is Open

4d04h: As98 PPP: Phase is AUTHENTICATING, by both [0 sess, 0 load]

4d04h: As98 CHAP: O CHALLENGE id 20 len 24 from "dc4"

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 36

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 36

4d04h: As98 CHAP: I CHALLENGE id 3 len 32 from "ministriesR"

4d04h: As98 CHAP: Waiting for peer to authenticate first

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 36

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 36

4d04h: As98 CHAP: I RESPONSE id 20 len 32 from "ministriesR"

4d04h: As98 CHAP: O SUCCESS id 20 len 4

4d04h: As98 CHAP: Processing saved Challenge, id 3

4d04h: As98 CHAP: O RESPONSE id 3 len 24 from "dc4"

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 8

17179869184d17179869184h: As98 PPP: I pkt type 0xC223, datagramsize 8

4d04h: As98 CHAP: I SUCCESS id 3 len 4

4d04h: As98 PPP: Phase is UP [0 sess, 0 load]

4d04h: As98 IPCP: O CONFREQ [Closed] id 24 len 16

4d04h:.!!!! As98 IPCP: CompressType VJ 15 slots (0x0206002D0F00)

4d04h: As98 IPCP: Address 172.20.254.254 (0x0306AC14FEFE)

4d04h: As98 CCP: Compression already closed

4d04h: As98 CCP: O CONFREQ [Closed] id 26 len 10

4d04h: As98 CCP: LZSDCP history 1 check mode SEQ process UNCOMPRESSSED (0x170

600010201)

17179869184d17179869184h: As98 PPP: I pkt type 0x8021, datagramsize 20

17179869184d17179869184h: As98 PPP: I pkt type 0x8021, datagramsize 20

4d04h: As98 IPCP: I CONFREQ [REQsent] id 3 len 16

4d04h: As98 IPCP: CompressType VJ 15 slots (0x0206002D0F00)

4d04h: As98 IPCP: Address 172.20.254.10 (0x0306AC14FE0A)

4d04h: As98 IPCP: O CONFACK [REQsent] id 3 len 16

4d04h: As98 IPCP: CompressType VJ 15 slots (0x0206002D0F00)

4d04h: As98 IPCP: Address 172.20.254.10 (0x0306AC14FE0A)

17179869184d17179869184h: As98 PPP: I pkt type 0x80FD, datagramsize 14

!!!!!!!!17179869184d17179869184h: As98 PPP: I pkt type 0x80FD, datagramsize 14

4d04h: As98 CCP: I CONFREQ [REQsent] id 3 len 10

4d04h: As98 CCP: LZSDCP history 1 check mode SEQ process UNCOMPRESSSED (0x170

600010201)

4d04h: As98 CCP: O CONFACK [REQsent] id 3 len 10

4d04h: As98 CCP: LZSDCP history 1 check mode SEQ process UNCOMPRESSSED (0x170

600010201)

17179869184d17179869184h: As98 PPP: I pkt type 0x8021, datagramsize 20

17179869184d17179869184h: As98 PPP: I pkt type 0x8021, datagramsize 20

4d04h: As98 IPCP: I CONFACK [ACKsent] id 24 len 16

4d04h: As98 IPCP: CompressType VJ 15 slots (0x0206002D0F00)

4d04h: As98 IPCP: Address 172.20.254.254 (0x0306AC14FEFE)

4d04h: As98 IPCP: State is Open

4d04h: As98 IPCP: Install route to 172.20.254.10

17179869184d17179869184h: As98 PPP: I pkt type 0x80FD, datagramsize 14

17179869184d17179869184h: As98 PPP: I p!!!!!!!!kt type 0x80FD, datagramsize 14

4d04h: As98 CCP: I CONFACK [ACKsent] id 26 len 10

4d04h: As98 CCP: LZSDCP history 1 check mode SEQ process UNCOMPRESSSED (0x170

600010201)

4d04h: As98 CCP: State is Open

4d04h: As98 CCP: ppp_hwcomp_open: no h/w

4d04h: As98 PPP: O pkt type 0x0800, datagramsize 52

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 51

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 51

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 51

4d04h: As98 LZSDCP: O Reset Req, Header/Req/Ack 0x90/0x10/0x20

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 53

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 53

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 53

4d04h: As98 LZSDCP: I Reset Ack, Header/Req/Ack 0xA0/0x10/0x20

4d04h: As98 PPP: I pkt type 0x0!!!!!!!!021, datagramsize 51

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 51

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 51

4d04h: As98 PPP: O pkt type 0x0221, datagramsize 53

4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async98, changed state to

up

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 30

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 30

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 30

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 43

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 27

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 27

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 27

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 48

4d04h: As98 PPP: O pkt type 0x0800, datagramsize 28

4d04h: As98 PPP: O pkt type 0x0800, datagramsize 33

!!!!!!!

!17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 46

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 46

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 46

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: O pkt type 0x0800, datagramsize 25

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 27

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 27

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 27

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: O pkt type 0xE000, datagramsize 27

17179869184d17179869184h: As98 PPP: I pkt type!!!!!!!! 0x00FD, datagramsize 27

17179869184d1717986918.4h: As98 PPP: I pkt type 0x00FD, datagramsize 26

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 26

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 26

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 103

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 1501

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 1501

4d04h: As98 PPP: I pkt type 0x0021, datagramsize 1499

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 43

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 43

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 43

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 43

4d04h: As98 UNKNOWN(0x00AB): Non-NCP packet, discarding

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 43

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 43

4d04h: As98 UNKNOWN(0x00AB): Non-NCP packet, discar.ding

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 37

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 37

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 37

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 103

4d04h: As98 UNKNOWN(0x00AB): Non-NCP packet, discarding

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 103

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 103

4d04h: As98 UNKNOWN(0x00AB): Non-NCP packet, discarding

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 39

17179869184d17179869184h: As98 PPP: I pkt type 0x00FD, datagramsize 39

4d04h: As98 PPP: I pkt type 0x00FD, datagramsize 39

4d04h: As98 PPP: I pkt type 0x00AB, datagramsize 43

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