![]() | |||||||||||||
Messages in this thread |
At 02:53 AM 15/05/2004, Andy Isaacson wrote:
>That corruption size really does make me think of network packets, so
>I'm tempted to blame it on PPP. Can you find out the MTU of your PPP
>link? "ifconfig ppp0" or something like that.
1352 bytes coule be remarkably close to the TCP MSS . . .
perhaps there is some interaction with ppp where there is an overrun / lost
packet and the TCP window is mistakenly advanced?
i.e.
- 1500 byte MTU
- less 28 bytes for PPP header (1472 bytes)
- less 20 bytes for IP header (1452 bytes)
- less 20 bytes for TCP header (1432 bytes)
if, however, the MRU is actually negotiated to be 1420 rather than 1500 . . .
when you issue the "bk pull", it may be interesting to see the output from:
tcpdump -i ppp0 -n | grep mss
cheers,
lincoln.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
| ||||||||||||
| Last update: 2005-03-22 13:03 [from the cache] ©2003-2008 | |||||||||||||