PPPOE_TIMEOUT=80 #这个应该是连接后没有数据传输超时，超过这个时间就断线。这个值要设置的大一些
CONNECT_TIMEOUT=0 #此项为重新连接的间隔时间，当然是越小越好了。可以设置为0,就是只要断线不停的拨，呵呵，狠！
LCP_INTERVAL=5 #LCP是Link Control Protocol,这个值也小一点的好，但原因我不清楚
如果出现以下错误，很可能就是上面几项设置不合理的原因:
Inactivity timeout… something wicked happened on session XXXX
我在写一个脚本的时间把PPPOE_TIMEOU设置为6,CONNECT_TIMEOUT设置为4,结果拨号成功后马上就断开，并且出现上面的错误信息。
[...] 前段时间写那个adsl拨号脚本的时候修改了/etc/sysconfig/network-scripts/ifcfg-cnc，结果就出现问题了，具体可查看这篇文章。当时按照前面文章的修改后已经有好长一段时间拨号都正常，但是今天早上拨号的时候突然发现又出现问题了，而且情况似乎与前一次差不多，以下是拨号的日志： May 18 09:26:04 cocobear pppd[1630]: pppd 2.4.3 started by root, uid 0 May 18 09:26:04 cocobear pppd[1630]: Using interface ppp0 May 18 09:26:04 cocobear pppd[1630]: Connect: ppp0 /dev/pts/0 May 18 09:26:04 cocobear pppoe[1642]: PADS: Service-Name: ” May 18 09:26:04 cocobear pppoe[1642]: PPP session is 9283 May 18 09:26:05 cocobear pppd[1630]: CHAP authentication succeeded: Welcome to .May 18 09:26:05 cocobear pppd[1630]: local IP address 124.89.60.31 May 18 09:26:05 cocobear pppd[1630]: remote IP address 221.11.2.1 May 18 09:26:05 cocobear pppd[1630]: primary DNS address 221.11.1.67 May 18 09:26:05 cocobear pppd[1630]: secondary DNS address 221.11.1.68 May 18 09:36:10 cocobear pppd[1630]: No response to 3 echo-requests May 18 09:36:10 cocobear pppd[1630]: Serial link appears to be disconnected. May 18 09:36:10 cocobear pppd[1630]: Connect time 10.1 minutes. May 18 09:36:10 cocobear pppd[1630]: Sent 490999 bytes, received 5168828 bytes. May 18 09:36:16 cocobear pppd[1630]: Connection terminated. May 18 09:36:16 cocobear pppd[1630]: Modem hangup May 18 09:36:21 cocobear pppd[1630]: Exit. May 18 09:36:21 cocobear pppoe[1642]: read (asyncReadFromPPP): Session 9283: Input/output error May 18 09:36:21 cocobear pppoe[1642]: Sent PADT May 18 09:36:21 cocobear adsl-connect: ADSL connection lost; attempting re-conne [...]