[求助]m0n0无法建立PPPoE拨号连接

ejzhang

我按照官方Handbook安装了m0n0并做好配置，可是在WAN口启用PPPoE方式后却无法建立连接，同时m0n0屏幕上出现大量“packet fragmented”，下面是系统日志，请高人帮忙看看是什么问题？

PS：我用Google搜了一下“packet fragmented”，基本上都是FreeBSD的源码，没找到什么有用的东西。

Last 50 system log entries
Apr 12 18:43:44 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:44 mpd: [pppoe] pausing 4 seconds before open
Apr 12 18:43:44 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:44 mpd: [pppoe] LCP: Down event
Apr 12 18:43:44 mpd: [pppoe] link: DOWN event
Apr 12 18:43:44 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:44 mpd: [pppoe] device: DOWN event in state OPENING
Apr 12 18:43:44 mpd: [pppoe] PPPoE connection timeout after 9 seconds
Apr 12 18:43:35 mpd: [pppoe] device is now in state OPENING
Apr 12 18:43:35 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:34 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:34 mpd: [pppoe] pausing 1 seconds before open
Apr 12 18:43:34 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:30 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:30 mpd: [pppoe] pausing 4 seconds before open
Apr 12 18:43:30 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:30 mpd: [pppoe] LCP: Down event
Apr 12 18:43:30 mpd: [pppoe] link: DOWN event
Apr 12 18:43:30 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:30 mpd: [pppoe] device: DOWN event in state OPENING
Apr 12 18:43:30 mpd: [pppoe] PPPoE connection timeout after 9 seconds
Apr 12 18:43:21 mpd: [pppoe] device is now in state OPENING
Apr 12 18:43:21 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:15 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:15 mpd: [pppoe] pausing 6 seconds before open
Apr 12 18:43:15 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:15 mpd: [pppoe] LCP: Down event
Apr 12 18:43:15 mpd: [pppoe] link: DOWN event
Apr 12 18:43:15 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:15 mpd: [pppoe] device: DOWN event in state OPENING
Apr 12 18:43:15 mpd: [pppoe] PPPoE connection timeout after 9 seconds
Apr 12 18:43:06 mpd: [pppoe] device is now in state OPENING
Apr 12 18:43:06 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:00 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:00 mpd: [pppoe] pausing 6 seconds before open
Apr 12 18:43:00 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:43:00 mpd: [pppoe] LCP: Down event
Apr 12 18:43:00 mpd: [pppoe] link: DOWN event
Apr 12 18:43:00 mpd: [pppoe] device is now in state DOWN
Apr 12 18:43:00 mpd: [pppoe] device: DOWN event in state OPENING
Apr 12 18:43:00 mpd: [pppoe] PPPoE connection timeout after 9 seconds
Apr 12 18:42:51 mpd: [pppoe] device is now in state OPENING
Apr 12 18:42:51 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:42:49 mpd: [pppoe] device is now in state DOWN
Apr 12 18:42:49 mpd: [pppoe] pausing 2 seconds before open
Apr 12 18:42:49 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:42:45 mpd: [pppoe] device is now in state DOWN
Apr 12 18:42:45 mpd: [pppoe] pausing 4 seconds before open
Apr 12 18:42:45 mpd: [pppoe] device: OPEN event in state DOWN
Apr 12 18:42:45 mpd: [pppoe] LCP: Down event

analyst

单机拨号正常吗？

ejzhang

我现在用的是Win2000+Kerio Winroute Firewall，虚拟拨号软件是WinPoET，用了一年多了一直很好。我现在想换成m0n0就遇到这个问题了。ADSL猫连到Win2000上就没问题（我现在上网发帖就是用的这个），但是连到m0n0上就不行。我从网上查好像和MTU有关，我在Win2000上用ADSL超频奇兵测出MTU为1460，在m0n0上改了也不行。我现在是彻底没辙了。

PS：我用的ADSL猫是上海贝尔的CyberLink 6307 YG，后来换过一个阿尔卡特的SpeedTouch 511e也不行。还有只有当ADSL猫插上电话线的时候才出“packet fragmented”，拔掉电话线就不出了。

谢谢analyst老大先！

[ 本帖最后由 ejzhang 于 2006-4-12 13:12 编辑 ]

analyst

换块m0n0的网卡试试呢，或者直接在vm跑跑看。

ejzhang

应该和网卡无关，因为我在连ADSL猫之前曾在WAN连过一台机器，使用静态IP做过试验（因为我一直在试验PPTP功能），所以我可以保证硬件是没有问题的。我觉得还是设置的问题。

ejzhang

问题解决，是网卡的问题。

我用的是老式的IBM PC Server 320，连接ADSL猫的是主板集成的AMD网卡，可能是FreeBSD与它的兼容性不好导致的这个问题。因为原来试验时用静态IP没出现问题，所以就以为不是硬件的原因，后来交换了一下LAN和WAN的网卡就没事了。看来只能换块网卡了。

不过我还是要谢谢analyst老大，多谢你积极帮我解决问题，谢谢啦！