ping 不到gateway - Linux

By Eden
at 2011-02-14T18:12
at 2011-02-14T18:12
Table of Contents
作業系統是Ubuntu 10.04LTS, 目前無法連上區域網路以外的網路,
1> 可以ping到自己的ip
2> 無法ping gateway(61.254)
3> 可以ping 到同一個區域網路的電腦
4> 於同一個區域網路的電腦
a. 可以ping 到無法連外網路的這台電腦
b. 可以ping gateway
嘗試將整個作業系統重灌,仍然維持這個情形,原本懷疑是網路卡,就去買了一個
USB/RJ45的網卡,但症狀依舊。
目前的推測是 網路線沒問題(交叉測試過,且可ping同區網電腦),
網路卡沒問題(換了外接網路卡情況依舊),
gateway 沒問題(同區網的電腦可以ping得到), 應無被鎖卡
目前毫無頭緒,希望大家能給我一些建議。
一些結果如下(eth0是主機板內建網卡,eth1是外接USB網路卡)
1. ifconfig
eth0 Link encap:Ethernet HWaddr 00:1d:7d:aa:d5:d3
inet6 addr: fe80::21d:7dff:feaa:d5d3/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:29022 errors:0 dropped:0 overruns:0 frame:0
TX packets:512 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2799975 (2.7 MB) TX bytes:54370 (54.3 KB)
Interrupt:23 Base address:0x2000
eth1 Link encap:Ethernet HWaddr 00:60:6e:00:68:8a
inet addr:140.112.61.75 Bcast:140.112.61.255 Mask:255.255.255.0
inet6 addr: fe80::260:6eff:fe00:688a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11510 errors:0 dropped:0 overruns:0 frame:0
TX packets:883 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1201143 (1.2 MB) TX bytes:85432 (85.4 KB)
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:398 errors:0 dropped:0 overruns:0 frame:0
TX packets:398 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:32767 (32.7 KB) TX bytes:32767 (32.7 KB)
2. route
Destination Gateway Genmask Flags Metric Ref Use Iface
140.112.61.0 * 255.255.255.0 U 1 0 0 eth0
140.112.61.0 * 255.255.255.0 U 1 0 0 eth1
link-local * 255.255.0.0 U 1000 0 0 eth1
default 140.112.61.254 0.0.0.0 UG 0 0 0 eth0
3. cat /proc/ioports
http://140.112.61.84/~yushengc/ioports
4. cat /proc/interrupts
http://140.112.61.84/~yushengc/interrupts
5. dmesg |grep -3 -i eth
http://140.112.61.84/~yushengc/dmesg
6. DNS
8.8.8.8
--
1> 可以ping到自己的ip
2> 無法ping gateway(61.254)
3> 可以ping 到同一個區域網路的電腦
4> 於同一個區域網路的電腦
a. 可以ping 到無法連外網路的這台電腦
b. 可以ping gateway
嘗試將整個作業系統重灌,仍然維持這個情形,原本懷疑是網路卡,就去買了一個
USB/RJ45的網卡,但症狀依舊。
目前的推測是 網路線沒問題(交叉測試過,且可ping同區網電腦),
網路卡沒問題(換了外接網路卡情況依舊),
gateway 沒問題(同區網的電腦可以ping得到), 應無被鎖卡
目前毫無頭緒,希望大家能給我一些建議。
一些結果如下(eth0是主機板內建網卡,eth1是外接USB網路卡)
1. ifconfig
eth0 Link encap:Ethernet HWaddr 00:1d:7d:aa:d5:d3
inet6 addr: fe80::21d:7dff:feaa:d5d3/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:29022 errors:0 dropped:0 overruns:0 frame:0
TX packets:512 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2799975 (2.7 MB) TX bytes:54370 (54.3 KB)
Interrupt:23 Base address:0x2000
eth1 Link encap:Ethernet HWaddr 00:60:6e:00:68:8a
inet addr:140.112.61.75 Bcast:140.112.61.255 Mask:255.255.255.0
inet6 addr: fe80::260:6eff:fe00:688a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11510 errors:0 dropped:0 overruns:0 frame:0
TX packets:883 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1201143 (1.2 MB) TX bytes:85432 (85.4 KB)
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:398 errors:0 dropped:0 overruns:0 frame:0
TX packets:398 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:32767 (32.7 KB) TX bytes:32767 (32.7 KB)
2. route
Destination Gateway Genmask Flags Metric Ref Use Iface
140.112.61.0 * 255.255.255.0 U 1 0 0 eth0
140.112.61.0 * 255.255.255.0 U 1 0 0 eth1
link-local * 255.255.0.0 U 1000 0 0 eth1
default 140.112.61.254 0.0.0.0 UG 0 0 0 eth0
3. cat /proc/ioports
http://140.112.61.84/~yushengc/ioports
4. cat /proc/interrupts
http://140.112.61.84/~yushengc/interrupts
5. dmesg |grep -3 -i eth
http://140.112.61.84/~yushengc/dmesg
6. DNS
8.8.8.8
--
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Linux
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