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Author Topic: COVR-C1213 (Node A Primary C1210) Spams ARP Broadcast while in Bridge Mode  (Read 139 times)

fermulator

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  • Posts: 7

Hi all,

Is there anyone else running these COVR-C1213 (3x nodes) with COVR A in bridge mode, and wired backhaul?

I have observed a bit of "network spam" emanating from the D-Link COVR A unit.

Check this out:

* COVRA == 10.0.0.25
* misc devices == 10.0.0.X

This isn't in of itself "abnormal", it is reasonable for a device to ask for L2 MAC addresses for a given L3 target. (and to do so it sends an ARP broadcast request)

HOWEVER, what makes it unusual, is that these devices ARE in fact replying to the COVR unit, saying "here I am!", but the COVR unit ignores it and keeps asking again and again :( ...

Here's an isolated sequence with one client (also the one taking the packet capture):


What's ultimately worse about all of this, is that these devices are mostly on the wired-side of the network ... so why does the D-Link COVR unit even need to know about these devices all the time?  And even if there is a reason, once it gets the ARP responses -- that should be the end of the chatter -- yet it continues.

I have contacted D-Link support about this, and they claim this is "normal" -- but I know it as a fact this is not good network device behaviour. (I've been in the networking industry/field for >15 years, and never seen a device behave like this -- and -- from what I know of the ARP protocol, this is not correct anyway);

Hoping to get feedback on this. Either "me too" or "same config but not happening to me", or "yes you are right this is wrong" or "actually this is fine/ok".
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FurryNutz

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    • Router Troubleshooting

Something I would let D-Link know about and what your seeing. I presume there maybe some differences between the 1203 and the 1210 COVR series systems so FW version will differ and maybe different. The 1210 series isn't available to the USA region.

Good Luck.
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Cable: 1Gb/50Mb>NetGear CAX80>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.

fermulator

  • Level 1 Member
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  • Posts: 7

Something I would let D-Link know about and what your seeing. I presume there maybe some differences between the 1203 and the 1210 COVR series systems so FW version will differ and maybe different. The 1210 series isn't available to the USA region.

yes, it is submitted with support Case ID: C6985580 - my intention with this post is to gather/glean comparison/anecdotal information from other D-Link customers or other network experts to chime in.
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