7 Replies Latest reply on Apr 27, 2013 1:01 AM by slowboy

    SX1016 trunked to a Brocade SX800

      Hi Everyone,

       

      Thought i would ask question here to see if anyone has seen this before or give me some more pointers.

       

      So i have a SX1016 configured with a port channel trunk to a Brocade SX800

       

      On the SX1016 end port channel is configured as hybrid so its sending both untagged and tagged vlans.

       

      Trunk on the Brocade is configured the same.

       

      Attached to the SX1016 are windows 2012 servers with 10g uplinks. These ports are set to hybrid as well.

       

      The issue is i have several machines on vlan 2 and vlan 3 that are sending out requests for dhcp. The replies they are getting back are for the default vlan.

       

      This is where it gets interesting as even though the virtual machine is on vlan 2 it has an ip from the default vlan and is communicating over the trunk as though it was in the default vlan.

       

      What i see from the SX1016 side is the packet coming in off the trunk in vlan 2 and then appearing on the default vlan.

       

      Any thought?

       

      Regards, Rob

        • Re: SX1016 trunked to a Brocade SX800
          yairi

          Hi Rob,

          I am not sure what is causing this. I would probably suggest opening a support ticket with the support group.

          mailto://support@mellanox.com

           

          Thanks

          1 of 1 people found this helpful
          • Re: SX1016 trunked to a Brocade SX800
            se-rulez

            Rob,

            In general Untagged traffic is mapped to default vlan. My personal best practice rule is to keep all uplink ports as tagged and server ports as hybrid.

             

            Is there a reason you are using hybrid ports on the LAG between SX1016 and the Brocade switch?

            Is your server sending tagged or untagged traffic?

            Could you also provide the output of show interfaces switchport on the SX1016?

             

            Thanks

            Anand

              • Re: SX1016 trunked to a Brocade SX800

                Hi Anand,

                 

                Yes. I agree with you 100% on that one. At the moment we are using the default vlan for specific switch traffic but the plan is to move this out to a vlan.

                 

                Currently the switch is connected to a Brocade SuperX Chassis via a 2 port 10G module. This module is configured exactly the same as the SX800 and runs without fault.

                 

                I did test the SX800 with the LAG on the SX1016 configured for both trunk and hybrid mode but it made no difference.

                 

                Regards, Rob

                 

                Interface  |    Mode    | Access vlan |        Allowed vlans

                -----------|------------|-------------|---------------------------

                Eth1/1      hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/2      hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/3      hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/4      access-dcb      1

                Eth1/5      access          1

                Eth1/6      access-dcb      54

                Eth1/7      access-dcb      38

                Eth1/8      access-dcb      38

                Eth1/9      access          54

                Eth1/10     access-dcb      38

                Eth1/11     access-dcb      54

                Eth1/12     access          54

                Eth1/13     access-dcb      54

                Eth1/14     access-dcb      38

                Eth1/15     access          54

                Eth1/16     access-dcb      38

                Eth1/17     access-dcb      54

                Eth1/18     access          54

                Eth1/19     access          1

                Eth1/20     access          1

                Eth1/21     access          1

                Eth1/22     access          1

                Eth1/23     access          1

                Eth1/24     access          1

                Eth1/25     access-dcb      54

                Eth1/26     access-dcb      38

                Eth1/27     access          1

                Eth1/28     access          1

                Eth1/29     access          1

                Eth1/30     access          1

                Eth1/31     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/32     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/33     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/35     access          1

                Eth1/36     access          1

                Eth1/37     access          1

                Eth1/38     access          1

                Eth1/39     access          1

                Eth1/40     access          1

                Eth1/41     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/42     access          54

                Eth1/43     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/44     access-dcb      38

                Eth1/45     access          1

                Eth1/46     access          1

                Eth1/47     access-dcb      54

                Eth1/48     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/49     access-dcb      54

                Eth1/50     access          1

                Eth1/51     access          1

                Eth1/52     access          1

                Eth1/53     access          1

                Eth1/54     hybrid          54          1, 2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 100

                Eth1/55     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/56     access-dcb      1

                Eth1/57     access          1

                Eth1/58     access          1

                Eth1/59     access          100

                Eth1/60     access-dcb      54

                Eth1/61     access-dcb      38

                Eth1/62     hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                Eth1/63     access          1

                Eth1/64     access          1

                Po1         hybrid          1           2, 3, 8, 9, 10, 11, 14, 15, 16

                                                        17, 18, 19, 22, 24, 27, 32, 37

                                                        38, 39, 52, 54, 100

                switch-638a12 [standalone: master] #

                  • Re: SX1016 trunked to a Brocade SX800
                    se-rulez

                    If your server sends untagged traffic, then it will be mapped to default vlan. Where is your server connected and is it sending tagged traffic?

                     

                    Anand

                      • Re: SX1016 trunked to a Brocade SX800

                        Hi Anand,

                         

                        The servers i have attached to this switch are quad node chassis. The uplinks are using connect-x 2 adapters.

                         

                        The servers are running hyper-v. The connect-x 2 is configured as a vswitch with no management access. So all traffic from the vm's is tagged. The only time a vm is untagged is if we are monitoring the network.

                         

                        The error that appeared was traffic from a vm tagged for 2 recieved an ip address back thats in the default vlan only.

                         

                        Looking at the switch the mac address was in vlan 2 and the untagged vlan which should not happen.

                         

                        There seems to be a layer 2 issue here as the machines tagged for 3 or higher werent suffering from this problem.

                        Rob

                  • Re: SX1016 trunked to a Brocade SX800

                    For those watching this thread.

                     

                    I believe i'm closer to sorting out what the problem is.

                     

                    What we are seeing is a type of Q in Q .

                     

                    I'm starting to think that this switch has some network virtualization bits enabled in it.

                     

                    Will confirm more in the next few days.