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Occasional Contributor II
Posts: 77
Registered: ‎11-17-2011

Help with link aggregation on 3400?

I've been following the tutorial "Link Aggregation (LACP) on Aruba Controller - Jan 2014" by Hendrick and have ran into some issues. 

 

When I try to set port 1 as a trunk port and go through and set it's LACP group and settings I get the following error:

GigabitEthernet 1/1:Illegal Operation: Interface belongs to a port-channel group.    I'm wanting to put all 4 ports into a trunk.

 

The switch on the other side is an HP Procurve 5412zl - I ran the trunk <ports> trk2 trunk command on it already and access to the controller came back.   I only have one interface connected at the moment and still have access to the controller.    

 

Any suggestions?

 

Thanks!

 

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Guru Elite
Posts: 20,794
Registered: ‎03-29-2007

Re: Help with link aggregation on 3400?

Here is how you do it on the Aruba side.  You can then configure the trunks on only the port channel:

 

!
interface gigabitethernet  1/1
        description "GE1/1"
        trusted
        trusted vlan 1-4094
        lacp group 2 mode active
!
interface gigabitethernet  1/2
        description "GE1/2"
        trusted
        trusted vlan 1-4094
        lacp group 2 mode active
!
interface gigabitethernet  1/3
        description "GE1/3"
        trusted
        trusted vlan 1-4094
        lacp group 2 mode active
!
interface port-channel 2
        trusted
        trusted vlan 1-4094

        switchport mode trunk

        switchport trunk native vlan 20

        switchport trunk allowed vlan ......



Commands to verify LACP:

 

 

(SWF) #show lacp 2 neighbor

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 Neighbor Table
-------------------
Port    Flags  Pri    OperKey  State  Num   Dev Id
----    -----  ---    -------  -----  ---   ------
GE 1/2  SA     32768  0x2      0x3d   0xc0  00:13:19:6A:4D:80
GE 1/3  SA     32768  0x2      0x3d   0xc2  00:13:19:6A:4D:80
GE 1/1  SA     32768  0x2      0x3d   0xc1  00:13:19:6A:4D:80


(SWF) #show lacp 2 counters

LACP Counter Table
------------------
Port    LACPDUTx  LACPDURx  MrkrTx  MrkrRx  MrkrRspTx  MrkrRspRx  ErrPktRx
----    --------  --------  ------  ------  ---------  ---------  --------
GE 1/2  95        92        0       0       0          0          0
GE 1/3  96        90        0       0       0          0          0
GE 1/1  92        88        0       0       0          0          0


(SWF) #show lacp 2 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 1/2  SA     255  0x3       0x3      0x3d   0x3  up
GE 1/3  SA     255  0x3       0x3      0x3d   0x4  up
GE 1/1  SA     255  0x3       0x3      0x3d   0x2  up


(SWF) #show lacp sys-id

32768,00:0B:86:61:66:14


(SWF) #show interface port-channel 2
Port-Channel 2 is administratively up
Hardware is Port-Channel, address is 00:00:00:00:00:00 (bia 00:0B:86:61:66:17)
Description: Link Aggregate (LACP)
Spanning Tree is forwarding
VLAN membership:     1
Switchport priority: 0
Member port:
    GE 1/2, Admin is up, line protocol is up
    GE 1/3, Admin is up, line protocol is up
    GE 1/1, Admin is up, line protocol is up
Last clearing of "show interface" counters 0 day 0 hr 52 min 54 sec
link status last changed 0 day 0 hr 21 min 27 sec
    34355 packets input, 2882907 bytes
    Received 10165 broadcasts, 0 runts, 0 giants, 0 throttles
    456 input error bytes, 0 CRC, 0 frame
    4811 multicast, 24190 unicast
    17102 packets output, 1904307 bytes
    0 output errors bytes, 0 deferred
    0 collisions, 0 late collisions, 0 throttles
Port-Channel 2 is TRUSTED
 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 77
Registered: ‎11-17-2011

Re: Help with link aggregation on 3400?

Thanks cjoseph!   Didn't get a chance to try it yet - been out for spring break.    Curious though on HP it doesn't look like LACP can be used if you use multiple vlans.   Between switches I had to remove lacp and just use a static trunk to get it to work.  Is there any thing special I have to do to get it to work?  Will it work mixed mode like that?

 

Also if I were to just make these changes on 1/2 - 2 and leave 1/1 alone.    Assuming if I assigned that trunk the same IP as 1/1 I could make the changes and then just simply plug them in to test leaving the original port unplugged and used to get back in if I screw something up? 

 

Just curious - wouldn't happen to know what the max sized SFP fits in a 3400 would you?    We are hopefully upgrading all of our switching links to 10Gbps  in the near future.

 

Thanks!

Guru Elite
Posts: 20,794
Registered: ‎03-29-2007

Re: Help with link aggregation on 3400?

bbelew,

 

I am not familar with HP.  A Google result here:  https://www.youtube.com/watch?v=FGwhbv1H4eA suggests that you can create an LACP group with multiple VLANs on a trunk.

 

You should be able to have only some of the ports plugged in and it should work, but you might want to get it working with all the ports configured, statically, at first.

 

I am not sure of the Maximum Sized SFP that would fit into the 3400, but the 3400 has a maximum firewall throughput and AES -CCM throughput  of 4 and 2 gigs respectively, so 10 gig interfaces should not really be considered: http://www.arubanetworks.com/pdf/products/DS_A3000.pdf



Colin Joseph
Aruba Customer Engineering

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