dd-wrt で有線LAN間の通信ができない。iptableをオフにしても解決しないので嵌りそうだった。
DD-WRTの既知のバグだった。
Linux同士はいけるけど
Windows同士ならダメ。
ちな、Macもダメ
発現する状況
Linux ----> Linux ok Linux ----> win ng linux ----> mac ng mac ----> linux , win ng win ----> linux , win ng
既出のエラーらしい
Posted: Thu May 03, 2012 10:04 pm Post subject: Wired PCs can't ping each other
Router - Bufallo WHR-G300N2 wired PCs cannot ping each other, though the router has dhcp leases for each. One is a Linux machine, the other is dual boot Linux/Windows 7.
A Linux Wireless laptop can ping both and be pinged from both.I have another Bufallo (same model) with its default firmware. When I replace the DD-WRT version, all machines can ping each other.
Any ideas?
Thx in advance
DD-WRT Forum :: View topic - Wired PCs can't ping each other
このスレでは、回答は出なかった。
arpキャッシュを更新しようとしたら出来ない。
まともなARPがないので、更に調べてみたら、ARPあたりもオカシイのでiptableでも無い事がわかる。エラーを検索したらARPの学習がされてないことがわかった。
ここで、arpがオカシイとわかった。
ARPが通らないのはVLANが切られているからだった。
ARPをキーワードに入れて調べてみたら、解決策が見えてきた。
SSHでログインして、以下のコマンドを実行します。
Using the references in the solution post, I logged in and tried the following:
swconfig dev switch0 set enable_vlan 1 swconfig dev switch0 set apply swconfig dev switch0 set enable_vlan 0 swconfig dev switch0 set applyIt appears to have actually fixed my issue with the wired connections not getting arp broadcast messages. This is on the 19484 version of the software. Hopefully it works for you too. :)
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これで動いたから、ビンゴ！VLANですね。
VLANはちゃんと設定したほうがよさそうですね。
でも次の人が言うように、VLANをちゃんと設定したほうがよさそうですね
I spent a few hours looking at this issue too. It looks like by default build 19484 puts each port on its own separate vlan, at least for reivision A2 A0. (Run "swconfig dev switch0 show".) You can either disable the vlan functionality entirely, or put them into a vlan that allows appropriate communication. As I was worried about the effect of disabling vlans entirely, I just put each port I needed into the preexisting vlan that allows communication with all ports:
swconfig dev switch0 port 3 set pvid 6 swconfig dev switch0 port 2 set pvid 6 swconfig dev switch0 port 1 set pvid 6 swconfig dev switch0 port 0 set pvid 6You can make these commands run at startup by going to Administration->Commands and choosing "Save Startup".
http://forums.buffalotech.com/t5/Wireless/WZR-HP-G300NH-build-19484-and-ARP-issue/td-p/107084/page/3
これで解決できそうですね。
公式のバグ報告
dd-wrt 公式にバグ報告があるけど、ちょっと話になってない。dd-wrt は報告するだけではだれも相手にしない感じですね。
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=154326&sid=0cf486970840477d6bfef5695df83084
http://www.dd-wrt.com/dd-wrtv2/bugtracker/view.php?id=4304
http://www.dd-wrt.com/dd-wrtv2/bugtracker/view.php?id=4303
swconfigコマンドについて
今回の肝だったswconfig コマンドについて→http://wiki.openwrt.org/doc/techref/swconfig
スイッチの設定について
スイッチの設定については、次ですぐに見ることが出来る
ROUTER_IP=192.168.2.1 ssh $ROUTER_IP "swconfig dev switch0 show " | pbcopy
スイッチ状態取得の実行結果
Global attributes: enable_learning: 1 enable_vlan: 1 enable_vlan4k: 0 blinkrate: 0 enable_qos: 1 Port 0: mib: Port 0 MIB counters IfInOctets : 0 EtherStatsOctets : 0 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 0 EtherStatsPkts65to127Octets : 0 EtherStatsPkts128to255Octets : 0 EtherStatsPkts256to511Octets : 0 EtherStatsPkts512to1023Octets : 0 EtherStatsPkts1024to1518Octets : 0 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 0 EtherStatsMulticastPkts : 0 EtherStatsBroadcastPkts : 0 EtherStatsDropEvents : 0 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 0 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 0 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 0 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 0 IfOutMulticastPkts : 0 IfOutBroadcastPkts : 0 led: 2 disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 1 link: port:0 link:down Port 1: mib: Port 1 MIB counters IfInOctets : 46072 EtherStatsOctets : 46072 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 38 EtherStatsPkts65to127Octets : 183 EtherStatsPkts128to255Octets : 48 EtherStatsPkts256to511Octets : 22 EtherStatsPkts512to1023Octets : 4 EtherStatsPkts1024to1518Octets : 6 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 285 EtherStatsMulticastPkts : 2 EtherStatsBroadcastPkts : 14 EtherStatsDropEvents : 0 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 0 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 540079 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 3 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 268 IfOutMulticastPkts : 788 IfOutBroadcastPkts : 449 led: 3 disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 2 link: port:1 link:up speed:100baseT full-duplex txflow rxflow Port 2: mib: Port 2 MIB counters IfInOctets : 0 EtherStatsOctets : 0 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 0 EtherStatsPkts65to127Octets : 0 EtherStatsPkts128to255Octets : 0 EtherStatsPkts256to511Octets : 0 EtherStatsPkts512to1023Octets : 0 EtherStatsPkts1024to1518Octets : 0 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 0 EtherStatsMulticastPkts : 0 EtherStatsBroadcastPkts : 0 EtherStatsDropEvents : 0 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 0 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 0 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 0 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 0 IfOutMulticastPkts : 0 IfOutBroadcastPkts : 0 led: 4 disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 3 link: port:2 link:down Port 3: mib: Port 3 MIB counters IfInOctets : 63309 EtherStatsOctets : 63309 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 146 EtherStatsPkts65to127Octets : 210 EtherStatsPkts128to255Octets : 60 EtherStatsPkts256to511Octets : 15 EtherStatsPkts512to1023Octets : 1 EtherStatsPkts1024to1518Octets : 17 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 125 EtherStatsMulticastPkts : 149 EtherStatsBroadcastPkts : 175 EtherStatsDropEvents : 4 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 4 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 551458 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 2 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 190 IfOutMulticastPkts : 788 IfOutBroadcastPkts : 448 led: 0 disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 4 link: port:3 link:up speed:1000baseT full-duplex txflow rxflow Port 4: mib: Port 4 MIB counters IfInOctets : 0 EtherStatsOctets : 0 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 0 EtherStatsPkts65to127Octets : 0 EtherStatsPkts128to255Octets : 0 EtherStatsPkts256to511Octets : 0 EtherStatsPkts512to1023Octets : 0 EtherStatsPkts1024to1518Octets : 0 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 0 EtherStatsMulticastPkts : 0 EtherStatsBroadcastPkts : 0 EtherStatsDropEvents : 0 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 0 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 0 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 0 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 0 IfOutMulticastPkts : 0 IfOutBroadcastPkts : 0 led: ??? disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 5 link: port:4 link:down Port 5: mib: Port 5 MIB counters IfInOctets : 448782 EtherStatsOctets : 448782 EtherStatsUnderSizePkts : 0 EtherFragments : 0 EtherStatsPkts64Octets : 478 EtherStatsPkts65to127Octets : 265 EtherStatsPkts128to255Octets : 333 EtherStatsPkts256to511Octets : 478 EtherStatsPkts512to1023Octets : 58 EtherStatsPkts1024to1518Octets : 82 EtherOversizeStats : 0 EtherStatsJabbers : 0 IfInUcastPkts : 458 EtherStatsMulticastPkts : 788 EtherStatsBroadcastPkts : 448 EtherStatsDropEvents : 0 Dot3StatsFCSErrors : 0 Dot3StatsSymbolErrors : 0 Dot3InPauseFrames : 0 Dot3ControlInUnknownOpcodes : 0 IfOutOctets : 212687 Dot3StatsSingleCollisionFrames : 0 Dot3StatMultipleCollisionFrames : 0 Dot3sDeferredTransmissions : 0 Dot3StatsLateCollisions : 0 EtherStatsCollisions : 0 Dot3StatsExcessiveCollisions : 0 Dot3OutPauseFrames : 0 Dot1dBasePortDelayExceededDiscards : 0 Dot1dTpPortInDiscards : 0 IfOutUcastPkts : 410 IfOutMulticastPkts : 147 IfOutBroadcastPkts : 189 led: ??? disable: 0 rate_in: 1048512 rate_out: 1048512 pvid: 6 link: port:5 link:up speed:1000baseT full-duplex txflow rxflow auto VLAN 1: info: VLAN 1: Ports: '05', members=0021, untag=0021, fid=0 fid: 0 ports: 0 5 VLAN 2: info: VLAN 2: Ports: '15', members=0022, untag=0022, fid=0 fid: 0 ports: 1 5 VLAN 3: info: VLAN 3: Ports: '25', members=0024, untag=0024, fid=0 fid: 0 ports: 2 5 VLAN 4: info: VLAN 4: Ports: '35', members=0028, untag=0028, fid=0 fid: 0 ports: 3 5 VLAN 5: info: VLAN 5: Ports: '45', members=0030, untag=0030, fid=0 fid: 0 ports: 4 5 VLAN 6: info: VLAN 6: Ports: '012345', members=003f, untag=003f, fid=0 fid: 0 ports: 0 1 2 3 4 5
