Instant On - Wireless

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  • 1.  UDP-3490 packets broadcast?

    Posted 06-14-2022 03:13 PM
    I installed my first 5 new InstantOn WAP's in a location and everything is working fine.  However my firewall is showing a broadcast from each AP, every 10 seconds, to udp/3490.  Why is that?  Can I turn it off?  It's not exactly going anywhere since it's the subnet broadcast address.

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    Robert Holmes
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  • 2.  RE: UDP-3490 packets broadcast?

    Posted 06-21-2022 09:54 PM
    Hey Robert,

    I'm checking with one of the engineers on this. Once they provide me an update, I'll let you know.

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    Aruba Instant On Communications
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  • 3.  RE: UDP-3490 packets broadcast?

    Posted 06-22-2022 03:50 AM
    It will be management packets, check out a wireshark decode:-

    No. Time Type Port Protocol Length VLAN ID

    50 07:38:32.300660 IPv4 172.16.7.100 172.16.7.255
    UDP 594 4 62725 → colubris(3490) Len=552
    Frame 50: 594 bytes on wire (4752 bits), 594 bytes captured (4752 bits)
    Ethernet II, Src: ArubaaHe_0b:b1:38 (28:de:65:0b:b1:38), Dst: Broadcast (ff:ff:ff:ff:ff:ff) Internet Protocol Version 4, Src: 172.16.7.100 (172.16.7.100), Dst: 172.16.7.255 (172.16.7.255) User Datagram Protocol, Src Port: 62725 (62725), Dst Port: colubris (3490)
    Data (552 bytes)



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    Andy K
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  • 4.  RE: UDP-3490 packets broadcast?

    Posted 06-22-2022 07:20 AM
    I figured it was, but it's a broadcast address. So is it useful?  Are the other AP's picking it up?

    I had to create a rule in my firewall upstream to not log those because there were so many.

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    Robert Holmes
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  • 5.  RE: UDP-3490 packets broadcast?

    Posted 08-01-2022 10:29 AM
    yes it accepts

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    Katerina Olana
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  • 6.  RE: UDP-3490 packets broadcast?

    Posted 06-29-2022 10:18 PM
    This is used for other Aruba Instant On Device discovery and shouldn't have any impact on the network.

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    Aruba Instant On Communications
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