by Hi,
I am trying to configure a client's system for DSL access using PPPoE.
This is a 2.7-patch system, with the ppp and pppoe from the -current.
They
compile up absolutely no problem.
The PPoE component appears to be working 100 %.
Everything looks good, but I am getting truncated IP packets when I do a
TCPDUMP on the network interface running off to the DSL modem.
There is also a problem with reliability and throughput ( which I equate
with
the truncated packets ).
There is one reference to this in the mailing list archives, but no
solution.
I SUSPECT that it is related to the MRU being hosed, but the ISP is
really
being a* ( and I don't have a choice, my client selected them )...
The PPPoE occurs, and the PAP handshaking establishes a link with a
MRU of 1492, then performs authentication.
The authentication causes a re-negotiation of the PAP paramaters, and at
this point, the MRU/MTU (appears) to be agreed upon as 1500. WTF??
I have a feeling that this is the problem, but really don't know...
I had to turn off LQR just so the link would stay up. If LQR was
enabled,
just idling, the PPP link would disconnect & restablish..
Thanks for ANY suggestions...
----------------------------------------------------------------------
TCP Dump example
----------------------------------------------------------------------
15:39:55.857170 PPPoE-Session
code Session, version 1, type 1, id 0x001a, length 178
IP: truncated-ip - 102 bytes missing!b.gtld-servers.net.domain >
xyz.domain: 47546- 1/3/3 A
----------------------------------------------------------------------
PPP Log file
----------------------------------------------------------------------
Sep 13 01:23:39 xyz ppp[29101]: Phase: Using interface: tun0
Sep 13 01:23:39 xyz ppp[29101]: Phase: deflink: Created in closed state
Sep 13 01:24:54 xyz ppp[29101]: Phase: Listening at port 3000.
Sep 13 01:24:54 xyz ppp[14208]: Phase: PPP Started (ddial mode).
Sep 13 01:24:54 xyz ppp[14208]: Phase: bundle: Establish
Sep 13 01:24:54 xyz ppp[14208]: Phase: deflink: closed -> opening
Sep 13 01:24:55 xyz ppp[14208]: Phase: deflink: Connected!
Sep 13 01:24:55 xyz ppp[14208]: Phase: deflink: opening -> dial
Sep 13 01:24:55 xyz ppp[14208]: Phase: deflink: dial -> carrier
Sep 13 01:24:55 xyz ppp[14208]: Phase: deflink: carrier -> login
Sep 13 01:24:55 xyz ppp[14208]: Phase: deflink: login -> lcp
Sep 13 01:24:55 xyz ppp[14208]: LCP: FSM: Using "deflink" as a transport
Sep 13 01:24:55 xyz ppp[14208]: LCP: deflink: State change Initial -->
Closed
Sep 13 01:24:55 xyz ppp[14208]: LCP: deflink: State change Closed -->
Stopped
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: LayerStart
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: SendConfigReq(1) state =
Stopped
Sep 13 01:24:56 xyz ppp[14208]: LCP: MRU[4] 1492
Sep 13 01:24:56 xyz ppp[14208]: LCP: MAGICNUM[6] 0x3b3caede
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: State change Stopped -->
Req-Sent
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: RecvConfigReq(7) state =
Req-Sent
Sep 13 01:24:56 xyz ppp[14208]: LCP: MRU[4] 1492
Sep 13 01:24:56 xyz ppp[14208]: LCP: AUTHPROTO[4] 0xc023 (PAP)
Sep 13 01:24:56 xyz ppp[14208]: LCP: MAGICNUM[6] 0x009bcd3a
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: SendConfigAck(7) state =
Req-Sent
Sep 13 01:24:56 xyz ppp[14208]: LCP: MRU[4] 1492
Sep 13 01:24:56 xyz ppp[14208]: LCP: AUTHPROTO[4] 0xc023 (PAP)
Sep 13 01:24:56 xyz ppp[14208]: LCP: MAGICNUM[6] 0x009bcd3a
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: State change Req-Sent -->
Ack-Sent
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: RecvConfigAck(1) state =
Ack-Sent
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: State change Ack-Sent -->
Opened
Sep 13 01:24:56 xyz ppp[14208]: LCP: deflink: LayerUp
Sep 13 01:24:56 xyz ppp[14208]: Phase: bundle: Authenticate
Sep 13 01:24:56 xyz ppp[14208]: Phase: deflink: his = PAP, mine = none
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: RecvConfigReq(2) state =
Opened
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: LayerDown
Sep 13 01:24:57 xyz ppp[14208]: LCP: AUTHPROTO[4] 0xc023 (PAP)
Sep 13 01:24:57 xyz ppp[14208]: LCP: MAGICNUM[6] 0x547172c3
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: SendConfigReq(2) state =
Opened
Sep 13 01:24:57 xyz ppp[14208]: LCP: MRU[4] 1492
Sep 13 01:24:57 xyz ppp[14208]: LCP: MAGICNUM[6] 0x77a5d801
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: SendConfigAck(2) state =
Opened
Sep 13 01:24:57 xyz ppp[14208]: LCP: AUTHPROTO[4] 0xc023 (PAP)
Sep 13 01:24:57 xyz ppp[14208]: LCP: MAGICNUM[6] 0x547172c3
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: State change Opened -->
Ack-Sent
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: RecvConfigNak(2) state =
Ack-Sent
Sep 13 01:24:57 xyz ppp[14208]: LCP: MRU[4] 1500
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: SendConfigReq(3) state =
Ack-Sent
Sep 13 01:24:57 xyz ppp[14208]: LCP: MRU[4] 1500
Sep 13 01:24:57 xyz ppp[14208]: LCP: MAGICNUM[6] 0x77a5d801
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: RecvConfigAck(3) state =
Ack-Sent
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: State change Ack-Sent -->
Opened
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: LayerUp
Sep 13 01:24:57 xyz ppp[14208]: Phase: deflink: his = PAP, mine = none
Sep 13 01:24:57 xyz ppp[14208]: Phase: Pap Input: SUCCESS ()
Sep 13 01:24:57 xyz ppp[14208]: Phase: deflink: lcp -> open
Sep 13 01:24:57 xyz ppp[14208]: Phase: bundle: Network
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: RecvProtocolRej(3) state =
Opened
Sep 13 01:24:57 xyz ppp[14208]: LCP: deflink: -- Protocol 0x80fd
(Compression Control Protocol) was rejected!
Sep 13 01:24:58 xyz ppp[14208]: LCP: deflink: RecvEchoRequest(1) state =
Opened
Sep 13 01:24:58 xyz ppp[14208]: LCP: deflink: SendEchoReply(1) state =
Opened
Sep 13 01:25:08 xyz ppp[14208]: LCP: deflink: RecvEchoRequest(2) state =
Opened
Sep 13 01:25:08 xyz ppp[14208]: LCP: deflink: SendEchoReply(2) state =
Opened
----------------------------------------------------------------------
LCP Configuration
----------------------------------------------------------------------
$ pppctl 3000
Password:
PPP ON xyz> show lcp
deflink: LCP [Opened]
his side: MRU 1492, ACCMAP ffffffff, PROTOCOMP off, ACFCOMP off,
MAGIC 547172c3, MRRU 0, SHORTSEQ off, REJECT 0000
my side: MRU 1500, ACCMAP 00000000, PROTOCOMP off, ACFCOMP off,
MAGIC 77a5d801, MRRU 0, SHORTSEQ on, REJECT 0000
Defaults: MRU = 1492, ACCMAP = 00000000
LQR period = 30s, Open Mode = active (delay 1s)
FSM retry = 3s, max 5 Config REQs, 5 Term REQs
Ident:
Negotiation:
ACFCOMP = disabled & denied
CHAP = disabled & accepted
MSCHAP = disabled & accepted
LANMan = disabled & accepted
LQR = disabled & denied
PAP = disabled & accepted
PROTOCOMP = disabled & accepted
PPP ON xyz> Connection closed
$ exit
Script done on Wed Sep 13 01:41:44 2000
----------------------------------------------------------------------
PPP Configuration file
----------------------------------------------------------------------
default:
dsl:
set log lcp Phase Warning Error Alert
set device "!/usr/sbin/pppoe -i vr1"
set mtu 1492
set mru 1492
set speed sync
disable lqr acfcomp protocomp
deny acfcomp
deny lqr
set authkey XXXXXX
add default hisaddr