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3810 & 6300 is not forming LACP. (one interface only)

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  • 1.  3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 10, 2022 08:57 AM

    Running the 3810 in mesh-cluster with OS: KB.16.11.0005

    and a vsf cluster with OS-CX: FL.10.10.0002 only one LACP interface is working.


    In the 3810 cluster it states: ST1-CMDR: port 1/A2 is Blocked by LACP

    When added/enabled as second interface. In the 6300 cluster it states:

    • 4,warning,lacpd,"Event|1310|LOG_WARN|CDTR|1|Partner is out of sync for interface 1/1/52 LAG sport: 2.
    • Actor state: ALFOX, partner state PSFO"

     

    The 6330 shows

    sh lacp aggregates lag1

    • Aggregate name : lag1
    • Interfaces : 2/1/52 5/1/52
    • Heartbeat rate : Slow
    • Hash : l4-src-dst
    • Aggregate mode : Active

     

    The 3810 shows:

    sh lacp

    LACP      Trunk     Port                LACP      Admin   Oper

    Port    Enabled   Group     Status    Partner   Status    Key     Key

    -----   -------   -------   -------   -------   -------   ------  ------

    • 1/A2 Active    Trk2      Blocked   No        Failure   0       963
    • 2/A2 Active    Trk2      Up        Yes       Success   0       963

     

    No other indicators is to be found to this !.

    Anyone; please ?



  • 2.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 10, 2022 02:49 PM
    What the configuration ?

    ------------------------------
    PowerArubaSW : Powershell Module to use Aruba Switch API for Vlan, VlanPorts, LACP, LLDP...

    PowerArubaCP: Powershell Module to use ClearPass API (create NAD, Guest...)

    PowerArubaCL: Powershell Module to use Aruba Central

    PowerArubaCX: Powershell Module to use ArubaCX API (get interface/vlan/ports info)..

    ACEP / ACMX #107 / ACDX #1281
    ------------------------------



  • 3.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 10, 2022 02:56 PM

    Thanks' for answering; I do understand the question;

    However it will be to tidies to disclose the whole config into the public domain.

    Any tips?, how to investigate the messages: port 1/A2 is Blocked by LACP..

    I see this behavior when adding a HP server with window server2022, and MS Teaming software.

    and a CX Lag. If/When adding more than one ports, the second get blocked in the 6300 vsf-stack,

    Making it likely to be a problem in the 6300M (CX) rather than the 3810 StackI 




  • 4.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 10, 2022 03:06 PM
    That's false.
    The portions of the running configuration you should share with the community to help the community troubleshoot your issue don't disclose really nothing (and if you're really worried of any potential leakage of private details you should just anonymize the MAC addresses and any Serial Number that would show up, that's enough...but for the purposes of the inter-link troubleshooting...there should not be any SNs, only MAC addresses and only when you post the full output of some specifc commands). It's up to you to tell or to show (portions).





  • 5.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 10, 2022 03:14 PM

    Well, that is a philosophical consideration we can take later,

    any social engineering is undesired,

    however, tips, into investigating, is easily chartable and desired at this point




  • 6.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 11, 2022 03:40 AM
    Hi there

    I cannot really see a connection to any social engineering possibility with a piece of LAG configuration between any 2 switches in your network. The most useful information is already disclosed (e.g. software used).

    However, what is popping into my eye is the following:
    Your ports you assigned to LAG1 are: 2/1/52 5/1/52. But your log messages shows an error with interface 1/1/52.

    So maybe this error message is not related to the output you posted.

    Regards,
    Thomas


  • 7.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 11, 2022 06:31 AM
    You're the one asking for help.


    Being the one asking for help, after posting what's wrong and copying and pasting fragments of information, you should then start to draw the larger picture...a larger picture generally includes "how I configured my devices?" (indeed how can the community to answer the question: "At first, is there a configuration/connection issue?" if there isn't a bare minimum visibility about running configurations and a basic network topology? that's especially true useful when you have multiple devices involved as in the case of two clusters, an ArubaOS-CX VSF on one side and a backplane stack on the other).

    I'm under the impression you're asking more for a brief lesson about "how to generically troubleshoot things like that" (if I see this particular warning/error, what I've to check then?) other than asking for an help to troubleshoot step-by-step the issue you're reporting (an approach that, at some point, will potentially expose what you have/haven't done and which implies a sort of implicit training too in seeking for the error/culprit).

    If you care, you should start to provide full outputs of some specific "show" LAG/Interface/Spanning Tree related commands and/or of some specific portions of your running configurations (again, related to LAG, Interfaces or Spanning Tree, as example) - both anonymized if/when necessary - the sort of things you should have already done at first because they are the very initial steps of any troubleshooting activity and such approach has absolutely nothing to do with undesired "social engineering" or anything else you can insist to speak of just to avoid some consistent text copy & paste extra effort.

    Nothing personal but my standpoint is that if I am in a position where I'm asking for help (because I'm unable to be autonomous to help myself with my very own knowledge only) I should then behave in a way that is "of help" for the rescue team I've called to help me... because I'm calling that rescue team to help me fixing a situation...at least this is the desired outcome...and so it's the rescue team that will guide me and I should give at least a minimum level of trust to that team (here team is generically the community of experts)

    It's a very reasonable posture, nothing too philosophical, as you can see.

    If you're more scared/worried about sharing specific bits of information than taking the necessary steps to solve your issue, then you don't have one issue but you have two problems, at least.


    And also we can't always be the ones that are hunting for inconsistencies in what is reported to describe the issue, see the 1/1/52 versus the interfaces listed as member ports of lag1 (just to start with...).



  • 8.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 11, 2022 06:50 AM

    The question needed to be answered is the
    two "inconsistent" error messages at the two sides:


    3810:
    • port 1/A2 is Blocked by LACP
    6300M
    • Partner is out of sync for interface 1/1/52 LAG sport: 2

    Actor state: ALFOX, partner state PSFO"

     

    Specially the : ALFOX and PSFO, state ?




  • 9.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 12, 2022 05:57 AM
    Sorry about the "typo", 1/1/52 is the only one working and forming a LACP for itself
    this shows the current config and direct cli output.

    6300M:
    sh lldp neighbor-info
    2/1/52 ::::: 1/A2 Switch 3810
    5/1/52 ::::: 2/A3 Switch 3810
    1/1/52 ::::: 2/A2 Switch 3810

    3810:
    sh lldp info remote-device

    1/A2 - 2/1/52 2/1/52 Switch 6300
    2/A2 - 1/1/52 Trk1 l.. Switch 6300
    2/A3 - 5/1/52 5/1/52 Switch 6300

    6300M
    sh lacp aggregates
    Aggregate name : lag1
    Interfaces : 2/1/52 5/1/52 1/1/52
    Heartbeat rate : Slow
    Hash : l4-src-dst
    Aggregate mode : Active

    3810
    sh lacp | include Trk2
    1/A2 Active Trk2 Blocked No Failure
    2/A2 Active Trk2 Up Yes Success
    2/A3 Active Trk2 Blocked No Failure



  • 10.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 12, 2022 07:58 AM
    Steinar,

    based on your output I still think that there is something wrong with either your config or your cabling (to be aggregated interfaces belong to different aggregates on the other side).

    So, again, if you request any help from the community, please provide the relevant config which at least is:
    - interface config on both sides
    - trunk (lag) config on both sides (all of them)

    Do not edit any output other than replacing identifying parts (hostnames, IPs) by generic ones.
    Additionally, please provide some running state info, like:
    - show lacp interface / show trunk
    - show int brief / show int status

    Why does your output of "sh lldp info remote-device" state "Trk1" in it? What is Trk1? Did you mess it up with Trk2?

    Regards,
    Thomas


  • 11.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 12, 2022 02:58 PM
    Sorry again, it was a typo in the description

    In the 6300
    sh running-config interface lag 1
    interface lag 1
    description Trunk to 3810 core
    no shutdown
    no routing
    vlan trunk native 11
    vlan trunk allowed 11,12
    lacp mode active
    hash l4-src-dst
    loop-protect
    loop-protect vlan 11,12
    exit

    interface 1/1/52
    description Lag1 to Trk2 2/A2 3810
    no shutdown
    mtu 9048
    lag 1
    exit
    interface 2/1/52
    description Lag1 to Trk2 2/A3 3810
    no shutdown
    mtu 9048
    lag 1
    exit
    interface 5/1/52
    description Lag1 to Trk2 2/A3 3810
    no shutdown1/1/52
    mtu 9048
    lag 1
    exit


    In 3810:

    trunk 1/A2,2/A2-2/A3 trk2 lacp

    interface 1/A2
    name "Stk-B_SW2 Trk2"
    exit

    interface 2/A2
    name "Stk-B_SW1 Trk2"
    exit

    interface 2/A3
    name "Stk-B_SW5 Trk2"
    exit

    sh running-config interface trk2

    Running configuration:

    interface Trk2
    tagged vlan 12
    untagged vlan 11
    spanning-tree priority 4 loop-guard
    exit

    sh running-config inter 1/A2,2/A2-2/A3
    Running configuration:

    interface 1/A2
    name "Stk-B_SW2 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit
    interface 2/A2
    name "Stk-B_SW1 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit
    interface 2/A3
    name "Stk-B_SW5 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit


  • 12.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 13, 2022 02:12 AM
    The presence of "untagged vlan 11" inside the contexts of interfaces 1/A2, 2/A2 and 2/A3 is quite strange since those interfaces are members of a the logical interface trk2, being members of a Port Trunk any VLAN membership should appear only into the logical interface trk2 context (and be related to that interface only). Another thing to note is the (spanning-tree related) "loop-guard" option that, IMHO, shouldn't be used in the context of trk2 logical interface (please post the output of "how spanning-tree ethernet trk2 detail" command).

    Given that the trk2 looks strange, at least judging from what was posted.

    I suggest you to redeploy the trk2 from scratch (with member interfaces in their default configuration) and apply VLAN membership to the trk2 interface only (in that way the VLAN membership settings will propagate to its member interfaces).


  • 13.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 13, 2022 02:59 AM
    It is automatically inserted,

    Prior to the port's assigned to Trk2

    interface 1/A2
    disable
    name "Stk-B_SW2 Trk2"
    untagged vlan 1
    exit
    interface 2/A2
    disable
    name "Stk-B_SW1 Trk2"
    untagged vlan 1
    exit
    interface 2/A3
    disable
    name "Stk-B_SW5 Trk2"
    untagged vlan 1
    exit

    trunk 1/A2,2/A2-2/A3 trk2 lacp

    after:
    interface 1/A2
    disable
    name "Stk-B_SW2 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit
    interface 2/A2
    disable
    name "Stk-B_SW1 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit
    interface 2/A3
    disable
    name "Stk-B_SW5 Trk2"
    untagged vlan 11
    trunk trk2 lacp
    exit

    (yes, disable on)

    Strangely, it is only 2/A2, and partner 1/1/52 which is working,

    Rotating the other ports, leave them blocked, and no Lacp at all!

    Hinting toward problem with Lag1, and 2/1/52 & 5/1/52 in the 6300 !







  • 14.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 13, 2022 03:42 AM
    Checked, that's OK (it strangely shows only the untagged VLAN membership on Port Trunk member ports, not also the tagged ones matching what was eventually configured on the trk logical interface...that's weird).

    Would you be then so kind to paste the full CLI output of the show spanning-tree ethernet trk2 details command, I'm quite sure that the loop-guard option should not be enabled on that type of logical interface (and it is not enabled by default).

    If I look at a pretty standard Port Trunk logical interface (particularly at one used as uplink interface between two switches), I recognize:

    From the Spanning Tree standpoint, in a properly configured network, I believe that setting the loop-guard option exactly on that logical interface (links aggregation) shouldn't be enabled if we admit that you're just operating a loop-free switch-to-switch single (links aggregated) interconnection but, maybe, your network topology is more complex and requires it...

    That disable option, at the Port Trunk member interfaces' context level, shouldn't be there.


  • 15.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 13, 2022 03:54 AM
    It looks different:

    show spanning-tree ethernet trk2 detail

    Spanning Tree Information


    Note : * indicates values dynamically overridden by user-role

    STP Enabled [No] : Yes
    Mode : RPVST
    Extended System ID : Enabled
    Ignore PVID Inconsistency : Disabled
    RPVST Enabled VLANs : 1,10,11

    Switch MAC Address :
    Root Guard Ports :
    Loop Guard Ports : Trk2
    TCN Guard Ports :
    BPDU Protected Ports :
    BPDU Filtered Ports :
    Auto Edge Ports : Trk2
    Admin Edge Ports :

    VLAN Root Mac Root Root Root Hello
    ID Address Priority Path-Cost Port Time(sec)
    ----- --------------- ---------- ---------- -------------------- ---------
    1 32,768 0 This switch is root 2
    10 32,768 0 This switch is root 2
    11 32,768 0 This switch is root 2

    However:
    show spanning-tree traps

    Status and Counters - STP Traps Information

    Trap Name | Status
    ---------------------- + --------
    errant-bpdu | Disabled
    new-root | Disabled
    root-guard | Disabled
    loop-guard | Disabled
    topology-change | Disabled






  • 16.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 13, 2022 04:07 AM
    Please, to ease our reading efforts (and preserving the text formatting), copy and paste the output on a text reader and do a screenshot as I did or simply find a way to copy and paste totally preserving the text formatting...otherwise is unreadable and performing fast comparison like-for-like becomes difficult.

    Be kind, report the CLI outputs of the show spanning-tree ethernet trk2show spanning-tree ethernet trk2 details and show spanning-tree ethernet trk2 config commands (anonymized when necessary).

    What ArubaOS-Switch version is currently running on the Aruba 3810M backplane stack?

    OK maybe the spanning-tree ethernet <interface-id> commands evolved their outputs on KB.16.11 with respect the version my switch is running on (a different software branch than 16.11).
     
    IMHO you should remove the loop-guard option on the trk2 interface, this just to start with.


  • 17.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 20, 2022 03:57 AM

    There has been a development, I tried to add a 2930F and a dual LACP, the 6300 shut down both port immediately, even with one interface !.

    Only one then, non-lacp port is in use between the 6300 and 2930F, there must be some serious trouble in the 6300 CX OS.




  • 18.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 20, 2022 07:58 AM
    At this point there could potentially be a software issue on AOS-CX 10.10.0002, have you tried to clear the LAG configurations and starting from scratch? I mean...starting with a configuration with no LAG interfaces at all (neither Static nor LACP) and then create the first LAG to connect your Aruba 3810M backplane stack...


  • 19.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 20, 2022 08:50 AM

    Well that's how it all started, but other lags has been added and deleted, but one should believe the first one retained is original hardware ID ? and hard to change now hence the fact it is in semi-production, and hard to kombi a console connection. However, I don't think it is in complaience with the original problem I this case.
    But i will try




  • 20.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    MVP GURU
    Posted Jul 20, 2022 10:14 AM
    As I suggested, mine was just a guess...your scenario looks not too different - at least reading it in the light of the reported LAG issues experienced on switches both running AOS-CX 10.10.0002 software build - from the one described on the other thread (LACP on 6100 vs 2930F).


  • 21.  RE: 3810 & 6300 is not forming LACP. (one interface only)

    Posted Jul 20, 2022 10:22 AM

    Absolute, this is not a coincident; it is the same serious issue. 




  • 22.  RE: 3810 & 6300 is not forming LACP. (one interface only)
    Best Answer

    Posted Jul 21, 2022 12:16 PM

    After removing the last lifeline of Lag1, rebooted; recreated Lag1;

    >>> Everything is in order, !

    No more blocking more than one interface, no more blocking all interfaces J

    Recreated all needed Lags, pt. and connected several AOS switches & AP's.

    This error must have appeared within the timeframe of upgrading to 10.10.0002