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Richard Fish: |
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> On 11/26/06, Sergio Polini <sp_rm_it@×××××.it> wrote: |
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> > I can just notice an astonishing difference between metrics: 25 |
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> > under Windows, 2000 (!) under Linux. |
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> |
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> The absolute value of an interface metric is meaningless, they only |
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> matter in relation to other interface metrics active at the time. |
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> They are used to decide between interfaces when a host can be |
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> reached through more than one interface. So for example, if you |
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> have a dialup connection as well as broadband, you would want the |
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> broadband connection to have a lower metric than the dialup so that |
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> it is the 'preferred' interface. |
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|
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Thanks for your answer. |
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My pings (perhaps all DNS lookups) are slow even if connect my PC to |
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both the wireless router and the cable, i.e. when there are both |
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a "fast" (metric 0) and a "slow" (metric 2000) interface. |
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|
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> What do "ifconfig wlan" and "iwconfig wlan" report for the fast and |
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> slow states? |
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|
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Fast (i.e. normal ;-) state happens only when net.wlan0 is stopped. |
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When I start net.wlan0: |
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|
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sergio ~ # ifconfig wlan0 |
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wlan0 Link encap:Ethernet HWaddr 00:14:A5:E1:D2:B9 |
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inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0 |
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UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 |
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RX packets:16 errors:0 dropped:0 overruns:0 frame:0 |
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TX packets:93 errors:0 dropped:0 overruns:0 carrier:0 |
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collisions:0 txqueuelen:1000 |
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RX bytes:2742 (2.6 Kb) TX bytes:10200 (9.9 Kb) |
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Interrupt:20 Memory:c3000000-c3004000 |
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|
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sergio ~ # iwconfig wlan0 |
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wlan0 IEEE 802.11g ESSID:"mynet" |
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Mode:Managed Frequency:2.462 GHz Access Point: 00:17:3F:0C:19:12 |
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Bit Rate=54 Mb/s Tx-Power:32 dBm |
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RTS thr:off Fragment thr:off |
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Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XX |
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Security mode:restricted |
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Power Management:off |
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Link Quality:100/100 Signal level:-48 dBm Noise level:-256 dBm |
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Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 |
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Tx excessive retries:1 Invalid misc:168 Missed beacon:0 |
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|
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> And the host that you are pinging, is a remote |
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> internet host or something local (like 192.168.2.1)? |
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|
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Remote internet hosts (f.i., google) and local. |
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BTW, I can't ping 192.168.2.1, i.e. the wireless router. But I can |
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under Windows! |
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|
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Thanks |
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Sergio |
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-- |
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