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Link Aggregation (LACP) on Aruba Controller -----protocol is down

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  • 1.  Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 01, 2024 12:17 AM

    (Aruba7010) [mynode] #show interface port-channel 1


    Port-Channel 1 is administratively up, Link is up, Line protocol is down
    Hardware is Port-Channel, address is 20:4C:03:1D:D2:EC (bia 20:4C:03:1D:D2:EC)
    Description: Link Aggregate (LACP)
    Spanning Tree is Discarding
    Switchport priority: 0
    MTU: 1500 bytes
    Member port(s): 
        GE 0/0/1, Admin is up, Link is up, Line protocol is down
        GE 0/0/2, Admin is up, Link is up, Line protocol is down
    Speed :0 Mbps
    Interface index: 8194
    Last clearing of "show interface" counters 0 day 4 hr 11 min 29 sec 
    link status last changed 0 day 4 hr 11 min 29 sec
        6956 packets input, 649204 bytes
        Received 5923 broadcasts, 0 runts, 0 giants, 0 throttles
        0 input error bytes, 0 CRC, 0 frame
        5923 multicast, 1033 unicast
        1678 packets output, 147920 bytes
        0 output errors bytes, 0 deferred
        0 collisions, 0 late collisions, 0 throttles
    Port-Channel 1 is TRUSTED

    Statistics for member port: GE 0/0/1               
        345 packets input, 22080 bytes
        Received 345 broadcasts, 0 runts, 0 giants, 0 throttles
        0 input error bytes, 0 CRC, 0 frame
        345 multicast, 0 unicast
        836 packets output, 73668 bytes
        0 output errors bytes, 0 deferred
        0 collisions, 0 late collisions, 0 throttles
    Statistics for member port: GE 0/0/2
        6611 packets input, 627124 bytes
        Received 5578 broadcasts, 0 runts, 0 giants, 0 throttles
        0 input error bytes, 0 CRC, 0 frame
        5578 multicast, 1033 unicast
        842 packets output, 74252 bytes
        0 output errors bytes, 0 deferred
        0 collisions, 0 late collisions, 0 throttles
    (Aruba7010) [mynode] #

    interface port-channel 1 
        trusted 
        trusted vlan 1-4094 
        switchport mode trunk 
        switchport trunk native vlan 1 
        switchport trunk allowed vlan 1-4094 

    interface gigabitethernet 0/0/1 
        description "GE0/0/1" 
        trusted 
        trusted vlan 1-4094 
        no poe 
        switchport mode trunk 
        switchport trunk native vlan 1 
        switchport trunk allowed vlan 1-4094 
        lacp group 1 mode active 
    !

    interface gigabitethernet 0/0/2 
        description "GE0/0/2" 
        trusted 
        trusted vlan 1-4094 
        no poe 
        switchport mode trunk 
        switchport trunk native vlan 1 
        switchport trunk allowed vlan 1-4094 
        lacp group 1 mode active 



  • 2.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 01, 2024 09:29 AM

    Looks like you don't have LACP enabled on the switch side.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 3.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 07:28 AM
    Edited by Lord Feb 02, 2024 07:28 AM

    Check the status with "show lacp", here reference output for port-channel 0. 

    Without lacp trunk on the switch side

    (airit-hw01) #show lacp 0 internal

    Flags: S - Device is requesting slow LACPDUs
           F - Device is requesting fast LACPDUs
           A - Device is in Active mode P - Device is in Passive mode
    LACP Internal Table
    -------------------
    Port      Flags  Pri  AdminKey  OperKey  State  Num  Status
    ----      -----  ---  --------  -------  -----  ---  ------
    GE 0/0/1  SA     255  0x1       0x1      0x45   0x2  down
    (airit-hw01) #

    With lacp trunk on the switch side

    (airit-hw01) #show lacp 0 internal

    Flags: S - Device is requesting slow LACPDUs
           F - Device is requesting fast LACPDUs
           A - Device is in Active mode P - Device is in Passive mode
    LACP Internal Table
    -------------------
    Port      Flags  Pri  AdminKey  OperKey  State  Num  Status
    ----      -----  ---  --------  -------  -----  ---  ------
    GE 0/0/1  SA     255  0x1       0x1      0x3d   0x2  up
    (airit-hw01) #



    ------------------------------
    Regards,

    Waldemar
    ACCX # 1377, ACEP, ACX - Network Security
    If you find my answer useful, consider giving kudos and/or mark as solution
    ------------------------------

    Original Message


  • 4.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 10:46 AM

    (Aruba7010) [mynode] #show lacp 0 internal 

    Flags: S - Device is requesting slow LACPDUs
           F - Device is requesting fast LACPDUs
           A - Device is in Active mode P - Device is in Passive mode
    LACP Internal Table
    -------------------
    Port      Flags  Pri  AdminKey  OperKey  State  Num  Status
    ----      -----  ---  --------  -------  -----  ---  ------
    GE 0/0/4  SA     255  0x1       0x1      0x45   0x5  down
    GE 0/0/2  SA     255  0x1       0x1      0x3d   0x3  up
    (Aruba7010) [mynode] #

    Why is one of the interfaces down and the other end is a Cisco 3850 switch? On the AC side, my STP is turned off


    Original Message


  • 5.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 10:59 AM

    This output doesn't match what you originally posted, different ports and different port-channel.

    You'll end up with up/down when attempting to split the LAG across multiple switches without correct support on the switch side or when plugged into the incorrect port.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 6.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 11:09 AM

    After the first issue occurred, I made adjustments on the switch side and was able to get up, but I found that one of them couldn't get up at first. The AC and switch are connected directly through two wires and do not cross other switch devices


    Original Message


  • 7.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 11:37 AM

    AC?

    What is the configuration on the switch side?  What is the current configuration on the mobility controller (MC) side?



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 8.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 01:17 PM

    Cisco 3850

    WS-C3850-48P#show running-config interface port-channel 101
    Building configuration...

    Current configuration : 56 bytes
    !
    interface Port-channel101
     switchport mode trunk
    end

    WS-C3850-48P#show running-config interface gi              
    WS-C3850-48P#show running-config interface gigabitEthernet 1/0/10
    Building configuration...

    Current configuration : 93 bytes
    !
    interface GigabitEthernet1/0/10
     switchport mode trunk
     channel-group 101 mode active
    end

    WS-C3850-48P#show running-config interface gigabitEthernet 1/0/11
    Building configuration...

    Current configuration : 93 bytes
    !
    interface GigabitEthernet1/0/11
     switchport mode trunk
     channel-group 101 mode active
    end

    WS-C3850-48P#show eth
    WS-C3850-48P#show etherc
    WS-C3850-48P#show etherchannel 101
    % Incomplete command.

    WS-C3850-48P#show etherchannel 101 s
    WS-C3850-48P#show etherchannel 101 summary 
    Flags:  D - down        P - bundled in port-channel
            I - stand-alone s - suspended
            H - Hot-standby (LACP only)
            R - Layer3      S - Layer2
            U - in use      f - failed to allocate aggregator

            M - not in use, minimum links not met
            u - unsuitable for bundling
            w - waiting to be aggregated
            d - default port

            A - formed by Auto LAG


    Number of channel-groups in use: 3
    Number of aggregators:           3

    Group  Port-channel  Protocol    Ports
    ------+-------------+-----------+-----------------------------------------------
    101    Po101(SU)       LACP        Gi1/0/10(D)     Gi1/0/11(P)     

    WS-C3850-48P#


    Original Message


  • 9.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 01:22 PM

    Aruba 7010  


    interface gigabitethernet 0/0/2 
        description "GE0/0/2" 
        trusted 
        trusted vlan 1-4094 
        no poe 
        switchport mode access 
        switchport access vlan 1 
        switchport trunk allowed vlan 1-4094 
        lacp group 0 mode active 
    !
                  

    interface gigabitethernet 0/0/4 
        description "GE0/0/4" 
        trusted 
        trusted vlan 1-4094 
        switchport mode access 
        switchport access vlan 1 
        switchport trunk allowed vlan 1-4094 
        lacp group 0 mode active 
    !

    no spanning-tree 

    interface port-channel 0 
        trusted 
        trusted vlan 1-4094 
        switchport mode trunk 
        switchport trunk native vlan 1 
        switchport trunk allowed vlan 1-4094 
    !

    interface port-channel 1 
        trusted 
        trusted vlan 1-4094 
        switchport mode trunk 
        switchport trunk native vlan 1 
        switchport trunk allowed vlan 1-4094 


    Original Message


  • 10.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 02, 2024 04:33 PM

    Looks about right to me.

    I'd recommend contacting TAC.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 11.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 03, 2024 07:02 AM

    In your first post, lineprotocol was down on both member ports.

    Now both the controller and the switch say that the line protocol is up on one port and down on the other.

    Can you check if both member ports are realy up?

    Use show port status on the controller.



    ------------------------------
    Regards,

    Waldemar
    ACCX # 1377, ACEP, ACX - Network Security
    If you find my answer useful, consider giving kudos and/or mark as solution
    ------------------------------

    Original Message


  • 12.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 03, 2024 08:29 PM

    (Aruba7010) [mynode] #show port status 

    Port Status
    -----------
    Slot-Port  PortType  AdminState  OperState  PoE       Trusted  SpanningTree  PortMode  Speed   Duplex  PortError
    ---------  --------  ----------  ---------  ---       -------  ------------  --------  -----   ------  ---------
    0/0/0      GE        Enabled     Down       Enabled   Yes      Disabled      Trunk     Auto    Auto    -
    0/0/1      GE        Enabled     Down       Disabled  Yes      Disabled      Access    Auto    Auto    -
    0/0/2      GE        Enabled     Up         Disabled  N/A      N/A           PC0       1 Gbps  Full    -
    0/0/3      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/4      GE        Enabled     Up         Enabled   N/A      N/A           PC0       1 Gbps  Full    -
    0/0/5      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/6      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/7      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/8      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/9      GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/10     GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/11     GE        Enabled     Down       Enabled   Yes      Disabled      Access    Auto    Auto    -
    0/0/12     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    0/0/13     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    0/0/14     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    0/0/15     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    0/0/16     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    0/0/17     GE        Enabled     Down       N/A       Yes      Disabled      Access    Auto    Auto    -
    PC0        PC        Enabled     Up         N/A       Yes      Disabled      Trunk     N/A     N/A     -
    (Aruba7010) [mynode] # 


    Original Message


  • 13.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 04, 2024 04:10 AM

    It's really strange.  The configuration looks right, both ports are up. I can't see any reason why it wouldn't work either.

    Open a case.



    ------------------------------
    Regards,

    Waldemar
    ACCX # 1377, ACEP, ACX - Network Security
    If you find my answer useful, consider giving kudos and/or mark as solution
    ------------------------------

    Original Message


  • 14.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 05, 2024 05:25 AM

    I don't carry the weight of the other respondents on this thread, but my take on port channels, having worked with Aruba, Cisco and Huawei is that there should be no config on the physical port apart from description and aggregation group reference. Leave all config on the port channel alone. Simpler to administer as much as anything. My working example on a controller (talking to Huawei) right now is:

    interface port-channel 0

       switchport mode trunk

       switchport trunk allowed vlan 154,168-169,257,347,430,432,437-438,451-459,628,697,2500-2515

       switchport trunk native vlan 4090

       trusted

       ip access-group in lu-restrict-snmp

       trusted vlan 154,168-169,257,347,430,432,437-438,451-459,628,697,2500-2515

    !

    interface gigabitethernet 0/0/2

       description GE0/0/2

       lacp group 0 mode active

    !

    interface gigabitethernet 0/0/3

       description GE0/0/3

       lacp group 0 mode active

    HTH.



    ------------------------------
    Nathan
    ------------------------------

    Original Message


  • 15.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down

    Posted Feb 05, 2024 08:49 AM

    AOS will ignore all of the interface level configuration that has to be applied at the port-channel, when the interface is assigned to a port-channel.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 16.  RE: Link Aggregation (LACP) on Aruba Controller -----protocol is down
    Best Answer

    Posted Feb 05, 2024 09:36 PM

    (Aruba7010) [mynode] (config) #show interface port-channel 0


    Port-Channel 0 is administratively up, Link is up, Line protocol is up
    Hardware is Port-Channel, address is 20:4C:03:1D:D2:EC (bia 20:4C:03:1D:D2:EC)
    Description: Link Aggregate (LACP)
    Spanning Tree is disabled
    Switchport priority: 0
    MTU: 1500 bytes
    Member port(s): 
        GE 0/0/2, Admin is up, Link is up, Line protocol is up
        GE 0/0/4, Admin is up, Link is up, Line protocol is up

    Interface - Misconnected... Sorry


    Original Message


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