几个奇怪的问题

sejishikong · 发表于 2009-3-8 13:22:15

adsl拨号后,route的default应该是adsl提供的才对.

hellothere · 发表于 2009-3-8 20:46:51

白天加班，只能用晚上的时间来，抱歉。
ps: 正考虑是否该去做个变性手术，好多赚点今天的加班费。

//无网关
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:132 errors:0 dropped:0 overruns:0 frame:0
      TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:13196 (12.8 KiB)  TX bytes:7710 (7.5 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:4 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:200 (200.0 b)  TX bytes:200 (200.0 b)

[root@Lily ~]# adsl-start
Deleting all exist defaultroute ....
. Connected!
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       *             0.0.0.0       U    0    0       0 ppp0
[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:267 errors:0 dropped:0 overruns:0 frame:0
      TX packets:116 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:23809 (23.2 KiB)  TX bytes:11107 (10.8 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:4 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:200 (200.0 b)  TX bytes:200 (200.0 b)

ppp0    Link encap

oint-to-Point Protocol
      inet addr:123.74.81.5  P-t-P:24.24.24.24  Mask:255.255.255.255
      UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
      RX packets:29 errors:0 dropped:0 overruns:0 frame:0
      TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:3
      RX bytes:1602 (1.5 KiB)  TX bytes:2041 (1.9 KiB)

PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
^C
--- 127.0.0.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

[root@Lily ~]# adsl-stop
Done.
//添上网关modem 192.168.1.1
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       192.168.1.1    0.0.0.0       UG 0    0       0 eth0
[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:501 errors:0 dropped:0 overruns:0 frame:0
      TX packets:147 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:42521 (41.5 KiB)  TX bytes:13466 (13.1 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:5 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:284 (284.0 b)  TX bytes:284 (284.0 b)

[root@Lily ~]# adsl-start
Deleting all exist defaultroute ....
. Connected!
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       *             0.0.0.0       U    0    0       0 ppp0
[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:651 errors:0 dropped:0 overruns:0 frame:0
      TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:57944 (56.5 KiB)  TX bytes:14157 (13.8 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:5 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:284 (284.0 b)  TX bytes:284 (284.0 b)

ppp0    Link encap

oint-to-Point Protocol
      inet addr:123.74.86.67  P-t-P:24.24.24.24  Mask:255.255.255.255
      UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
      RX packets:21 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:3
      RX bytes:2332 (2.2 KiB)  TX bytes:61 (61.0 b)
[root@Lily ~]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
^C
--- 127.0.0.1 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1011ms


无论有无网关，adsl-start都可以连上，但是ping 127.0.0.1都不通.

sejishikong · 发表于 2009-3-8 22:24:10

default * 0.0.0.0 U 0 0 0 ppp0

这个明显不对．
route del gw default
route add gw default 123.74.86.67（这个改成你ppp0的地址）．

hellothere · 发表于 2009-3-9 11:09:07

[root@Lily ~]# route del gw default
gw: 主机名搜索失败                      //运行命令不成功
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       *             0.0.0.0       U    0    0       0 ppp0
[root@Lily ~]# route del default //这样倒是删掉了默认网关
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
[root@Lily ~]# route add gw default 123.74.81.175    //我的ppp0地址
gw: 主机名搜索失败                            //运行命令不成功
[root@Lily ~]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
^C
--- 127.0.0.1 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1010ms

sejishikong · 发表于 2009-3-9 11:20:23

我写反了，应该是default gw。

hellothere · 发表于 2009-3-9 21:56:29

[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:1278 errors:0 dropped:0 overruns:0 frame:0
      TX packets:574 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:113304 (110.6 KiB)  TX bytes:43785 (42.7 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:4 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:200 (200.0 b)  TX bytes:200 (200.0 b)

[root@Lily ~]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.151 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.088 ms
^C
--- 127.0.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.088/0.119/0.151/0.033 ms
[root@Lily ~]# adsl-start
Deleting all exist defaultroute ....
. Connected!
[root@Lily ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:03:9D:71:67:57
      inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
      inet6 addr: fe80::203:9dff:fe71:6757/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:1388 errors:0 dropped:0 overruns:0 frame:0
      TX packets:602 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:121871 (119.0 KiB)  TX bytes:45272 (44.2 KiB)
      Interrupt:6 Base address:0x9c00

lo       Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:8 errors:0 dropped:0 overruns:0 frame:0
      TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:536 (536.0 b)  TX bytes:536 (536.0 b)

ppp0    Link encap

oint-to-Point Protocol
      inet addr:123.74.84.69  P-t-P:24.24.24.24  Mask:255.255.255.255
      UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
      RX packets:3 errors:0 dropped:0 overruns:0 frame:0
      TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:3
      RX bytes:54 (54.0 b)  TX bytes:61 (61.0 b)

[root@Lily ~]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
^C
--- 127.0.0.1 ping statistics ---
6 packets transmitted, 0 received, 100% packet loss, time 5010ms

[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       *             0.0.0.0       U    0    0       0 ppp0
[root@Lily ~]# route del default
[root@Lily ~]# route add default gw 123.74.84.69
[root@Lily ~]# route
Kernel IP routing table
Destination    Gateway       Genmask       Flags Metric Ref Use Iface
24.24.24.24    *             255.255.255.255 UH 0    0       0 ppp0
192.168.1.0    *             255.255.255.0 U    0    0       0 eth0
169.254.0.0    *             255.255.0.0    U    0    0       0 eth0
default       123.74.84.69 0.0.0.0       UG 0    0       0 ppp0
[root@Lily ~]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
^C
--- 127.0.0.1 ping statistics ---
12 packets transmitted, 0 received, 100% packet loss, time 10999ms

[root@Lily ~]# ping 123.74.84.69
PING 123.74.84.69 (123.74.84.69) 56(84) bytes of data.
^C
--- 123.74.84.69 ping statistics ---
11 packets transmitted, 0 received, 100% packet loss, time 10010ms

[root@Lily ~]#

外甥打灯笼——照旧啊

sejishikong · 发表于 2009-3-12 15:37:24

奇怪了。我看了下我这里。
网关和地址还真不一样，这个就难办了。

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