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On 04/04/2017 01:26 AM, Mick wrote: |
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> On Monday 03 Apr 2017 20:21:28 thelma@×××××××××××.com wrote: |
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>> The new box I installed in remote location has a problem obtaining IP |
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>> address. The box was working perfectly on my local LAN. |
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>> |
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>> In remote location I assigned static IP to it 10.10.0.5 |
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> |
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> Where and how? At the router IP address table, against the PC's MAC address? |
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> At the PC itself using a static IP address and gateway in /etc/conf.d/net? |
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The remote location router runs DD-WRT (dhcpd), so all static IP's are assigned via DD-WRT and MAC address. |
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>> Previously this IP was assigned to a Virtual Box but I no longer use it, |
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>> so I assign this IP to a new box. |
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>> |
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>> The box was working for a day, but now when I boot the box I get |
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>> - soliciting a DHCP lease |
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>> - carrier lost |
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> |
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> The "carrier lost" error indicates a link going down. The lease renewal is |
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> likely to fail at least while the link is down. The link failure may be due |
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> to an electrical hard fault, e.g. faulty Cat5e cable, RJ45 socket/plug; or due |
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> to high electromagnetic interference. Check the router stats for carrier lost |
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> errors. If the counters show the link is being dropped regularly you should |
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> try to eliminate each component in the circuit the cause of the fault. |
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The cable tester I have (cheap) is showing the CAT5 cable is OK. |
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http://www.primecables.com/p-309139-cab-ss35407-tester-network-cable-tester-crimping-tools-combo-for-rj-45-rj-11-primecables?gclid=CJzU2JKJi9MCFQYMaQodEyIHeA |
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>> Could the old IP get stuck somewhere in DD-WRT router? |
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>> |
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>> ping 10.10.0.5 - gives me no response. |
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> |
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> You may find arping a better instrument for investigating the use of IP |
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> addresses in your LAN. |
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> |
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> |
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>> The Cat5 is about 15-20meter long, I test it with a cable tester, it is |
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>> good (all the lights light up in correct order). |
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>> Cable is plugged in into a new switch. |
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> |
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> Long cables are more susceptible to electromagnetic interference - keep their |
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> runs separate from mains cables. |
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Shouldn't CAT5 be able to handle 100m run? |
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Am not sure I understand, "keep their runs separate from mains cables"? |
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Electromagnetic interference - could be a problem, and it is hard to troubleshoot. |
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>> I'll try to assign different address to it tomorrow and will try a new |
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>> router on Friday. |
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> |
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> The new router should eliminate the router as the cause of the problem. |
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> |
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-- |
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Thelma |
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