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Bring performance and reliability to your network with the Aruba Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of the ArubaOS-Switch and ArubaOS-CX devices, and find ways to improve security across your network to bring together a mobile first solution.
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UniDirectional Link Detection (UDLD)

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  • 1.  UniDirectional Link Detection (UDLD)

    Posted Apr 23, 2022 12:56 AM
    I have enabled between two ports of aruba and cisco switch (fibre module) link-keepalive and i get the bellow :
    Status and Counters - UniDirectional Link Detection (UDLD)

    Port : 1/45
    Current State : failure Neighbor MAC Addr : 000000-000000
    UDLD Pkts Sent : 16 Neighbor Port : 0
    UDLD Pkts Received : 0 State Transitions : 1
    Port Blocking : Yes Link-VLAN : untagged

    Port : 2/45
    Current State : failure Neighbor MAC Addr : 000000-000000
    UDLD Pkts Sent : 13 Neighbor Port : 0
    UDLD Pkts Received : 0 State Transitions : 1
    Port Blocking : Yes Link-VLAN : untagged

    What could be the issue and current state is failed?
    The link functioning properly without any issues!

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    ioannis vosikas
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  • 2.  RE: UniDirectional Link Detection (UDLD)

    MVP GURU
    Posted Apr 23, 2022 05:29 AM
    Two separate physical duplex links between two Switches? without aggregating them in a logical Links Aggregate Group interface (Port Trunk on Aruba, Etherchannel on Cisco)? can you provide us a little bit more details about such of configuration (of both sides)?





  • 3.  RE: UniDirectional Link Detection (UDLD)

    Posted Apr 23, 2022 08:14 AM
    Two interfaces (Trunked, LAG LACP active mode) [Port Trunk on Aruba, Etherchannel on Cisco]
    Switch# sh lacp

    LACP

    LACP Trunk Port LACP Admin Oper
    Port Enabled Group Status Partner Status Key Key
    ----- ------- ------- ------- ------- ------- ------ ------
    1/45 Active Trk2 Up Yes Success 0 533
    2/45 Active Trk2 Up Yes Success 0 533





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    ioannis vosikas
    ------------------------------



  • 4.  RE: UniDirectional Link Detection (UDLD)

    Posted Nov 18, 2022 10:19 AM

    Hi all,

    I´m facing the same issue... a LACP Trk between a Cisco Meraki MS-Switch and an Aruba 2930F!

    Using link-keepalive on dedicated switchports - it works, using link-keepalive on the same ports but when they are part of the LACP Trk they don`t!
    Does anyone have an information if this is a known issue and maybe both (LACP and Link-Keepalive on the physical switchports) in combination is mutually exclusive?