[linux-users: 108892] Re: rt2800usb に ping が届かない

Hiroshi Takenaka hiro-takenaka_50 @ gem.hi-ho.ne.jp
2012年 5月 26日 (土) 12:02:13 JST


竹中@長岡京市です。

山下様、早速のアドバイス有難うございます。
本日、いろいろとやっているうちに辛うじて ping が通る状態になってしまいま
した。
ただし、time=数百 msec、packet loss=約20% の状態です。

この状態で、OSX マシン上での netstat -nr と arp -a の結果は以下のとおり
です。
(route -a は、OSX では使えませんでした。)

netstat -nr の出力
====================================================================================
Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.1.1 UGSc 77 0 en1
10.37.129/24 link#9 UC 1 0 vnic1
10.37.129.2 0:1c:42:0:0:9 UHLWIi 1 1 lo0
10.211.55/24 link#8 UC 1 0 vnic0
10.211.55.2 0:1c:42:0:0:8 UHLWIi 1 1 lo0
127 127.0.0.1 UCS 0 0 lo0
127.0.0.1 127.0.0.1 UH 1 10 lo0
169.254 link#5 UCS 0 0 en1
192.168.1 link#5 UCS 8 0 en1
192.168.1.1 0:3a:9d:7f:7f:f4 UHLWIi 92 1032 en1 254
192.168.1.2 0:24:a5:d5:bf:85 UHLWIi 0 156 en1 1105
192.168.1.3 4c:e6:76:3b:4:84 UHLWIi 0 6 en1 1078
192.168.1.4 4c:e6:76:3b:6:b3 UHLWIi 0 17 en1 1083
192.168.1.5 0:24:a5:d5:c0:43 UHLWIi 0 9 en1 1180
192.168.1.6 4c:e6:76:3b:22:6b UHLWIi 0 20 en1 1083
192.168.1.7 0:1c:42:f6:9:23 UHLWIi 0 49 en1 1113
192.168.1.31 127.0.0.1 UHS 0 3 lo0
192.168.1.32 0:24:a5:d5:c2:94 UHLWIi 1 320 en1 1167

Internet6:
Destination Gateway Flags Netif Expire
default fe80::212:e2ff:fe70:b14c%en1 UGc en1
::1 link#1 UHL lo0
2001:a443:9fff:a1a::/64 link#5 UC en1
2001:a443:9fff:a1a:462a:60ff:fedc:66b9 44:2a:60:dc:66:b9 UHL lo0
2001:a443:9fff:a1a:adf8:5b81:aff9:71f7 44:2a:60:dc:66:b9 UHL lo0
fe80::%lo0/64 fe80::1%lo0 UcI lo0
fe80::1%lo0 link#1 UHLI lo0
fe80::%en1/64 link#5 UCI en1
fe80::1%en1 link#5 UHLWIi en1
fe80::212:e2ff:fe70:b14c%en1 0:12:e2:70:b1:4c UHLWIi en1
fe80::462a:60ff:fedc:66b9%en1 44:2a:60:dc:66:b9 UHLI lo0
ff01::%lo0/32 fe80::1%lo0 UmCI lo0
ff01::%en1/32 link#5 UmCI en1
ff02::%lo0/32 fe80::1%lo0 UmCI lo0
ff02::%en1/32 link#5 UmCI en1
=============================================================================================

ping が全く通らないときは、
Destination 192.168.1.32 に対するGateway は、
link#5 と表示されていました。

arp -a の出力
========================================================================
? (10.37.129.2) at 0:1c:42:0:0:9 on vnic1 ifscope permanent [ethernet]
? (10.211.55.2) at 0:1c:42:0:0:8 on vnic0 ifscope permanent [ethernet]
ntt.setup (192.168.1.1) at 0:3a:9d:7f:7f:f4 on en1 ifscope [ethernet]
? (192.168.1.2) at 0:24:a5:d5:bf:85 on en1 ifscope [ethernet]
? (192.168.1.3) at 4c:e6:76:3b:4:84 on en1 ifscope [ethernet]
? (192.168.1.4) at 4c:e6:76:3b:6:b3 on en1 ifscope [ethernet]
? (192.168.1.5) at 0:24:a5:d5:c0:43 on en1 ifscope [ethernet]
? (192.168.1.6) at 4c:e6:76:3b:22:6b on en1 ifscope [ethernet]
? (192.168.1.7) at 0:1c:42:f6:9:23 on en1 ifscope [ethernet]
? (192.168.1.32) at 0:24:a5:d5:c2:94 on en1 ifscope [ethernet]
=========================================================================

ping -c 10 192.168.1.32 の結果
=========================================================================
PING 192.168.1.32 (192.168.1.32): 56 data bytes
64 bytes from 192.168.1.32: icmp_seq=0 ttl=64 time=484.988 ms
64 bytes from 192.168.1.32: icmp_seq=1 ttl=64 time=506.304 ms
64 bytes from 192.168.1.32: icmp_seq=2 ttl=64 time=530.244 ms
64 bytes from 192.168.1.32: icmp_seq=3 ttl=64 time=450.034 ms
64 bytes from 192.168.1.32: icmp_seq=4 ttl=64 time=473.062 ms
64 bytes from 192.168.1.32: icmp_seq=5 ttl=64 time=496.520 ms
64 bytes from 192.168.1.32: icmp_seq=6 ttl=64 time=519.768 ms
64 bytes from 192.168.1.32: icmp_seq=7 ttl=64 time=442.302 ms
64 bytes from 192.168.1.32: icmp_seq=8 ttl=64 time=464.228 ms
64 bytes from 192.168.1.32: icmp_seq=9 ttl=64 time=486.997 ms

--- 192.168.1.32 ping statistics ---
10 packets transmitted, 10 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 442.302/485.445/530.244/27.321 ms
======================================================================

サーバ側 mac アドレス:00:24:A5:D5:C2:94
クライアント側 mac アドレス:44:2a:60:dc:66:b9

以上、よろしくお願い致します。
-- 
*************************
Hiroshi TAKENAKA Nagaokakyo,
Kyoto, Japan
*************************


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