PPP disconnection in DSL modem
PPP disconnection in DSL modem
- Subject: PPP disconnection in DSL modem
- From: "Ronnie Kunin" <email@hidden>
- Date: Tue, 25 Feb 2003 12:07:55 -0500
- Thread-topic: PPP disconnection in DSL modem
Hi,
I have a DSL modem for which I've written a OSX kernel driver subclassed of IOSerialDriverSync. I establish the network connection (PPPoA) pretty much as if it was a standard dial-up modem using InternetConnect.
I'm doing overnight data transfer tests using a downstream rate of ~ 4Mbps. The test is an FTP download using a 5 MB file in an infinite loop.
I get the PPP connection dropped after about 6 hours and thousand of successful file transfers.
Originally the only data I saw in the PPP trace was echo packets the Mac sends that are not being replied to. But when I attempt to reconnect everything works OK (the modem/driver is still alive). I turned off PPP echo packets. Rerunning the same test got a bit longer running time (about 11 hours) but still got disconnected.
The PPP trace I got is included below. For some reason I cannot understand, the system stops recognizing IP as a valid protocol. I'm not a PPP expert, but cannot see anything wrong with the stream of bytes rejected.
Can anybody provide a clue as to what may be happening ? Anybody experienced anything like this ?
Thanks,
Ronnie
PPP trace follows:
--------------
sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0x18ca9bde> <pcomp> <accomp>]
lcp_reqci: returning CONFACK.
sent [LCP ConfAck id=0x91 <auth pap> <magic 0x12d4a166>]
rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0x18ca9bde> <pcomp> <accomp>]
sent [PAP AuthReq id=0x2 user="test" password=<hidden>]
rcvd [PAP AuthAck id=0x2 ""]
sent [IPCP ConfReq id=0x4 <addr 0.0.0.0> <compress VJ 0f 01> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
rcvd [IPCP ConfReq id=0xe <addr 192.100.100.25>]
ipcp: returning Configure-ACK
sent [IPCP ConfAck id=0xe <addr 192.100.100.25>]
rcvd [IPCP ConfRej id=0x4 <compress VJ 0f 01> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x5 <addr 0.0.0.0>]
rcvd [IPCP ConfNak id=0x5 <addr 192.100.100.56>]
sent [IPCP ConfReq id=0x6 <addr 192.100.100.56>]
rcvd [IPCP ConfAck id=0x6 <addr 192.100.100.56>]
ipcp: up
local IP address 192.100.100.56
remote IP address 192.100.100.25
rcvd [IP data] 45 00 00 54 c0 2d 00 00 ...
Unsupported protocol 'IP' (0x21) received
sent [LCP ProtRej id=0x3 00 21 45 00 00 54 c0 2d 00 00 7f 01 32 66 c0 64 64 14 c0 64 64 38 00 00 95 52 01 51 9c 30 3e 57 ...]
rcvd [IP data] 45 c0 00 9e 00 00 00 00 ...
Unsupported protocol 'IP' (0x21) received
sent [LCP ProtRej id=0x4 00 21 45 c0 00 9e 00 00 00 00 02 09 93 1a c0 64 64 19 ff ff ff ff 11 53 00 01 00 01 00 08 00 00 ...]
rcvd [IPCP TermReq id=0xf]
IPCP terminated by peer
ipcp: down
sent [IPCP TermAck id=0xf]
sent [LCP TermReq id=0x5 "No network protocols running"]
rcvd [LCP TermAck id=0x5]
Connection terminated.
Connect time 672.9 minutes.
Sent 191440016 bytes, received -2020734263 bytes.
Serial link disconnected.
--------------
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