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br0 dropped packets

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  • 1.  br0 dropped packets

    Posted May 04, 2015 03:58 PM

    Anyone seen a problem where the br0 port is showing almost all packets dropped?

     

    br0       Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  
          inet addr:10.20.31.98  Bcast:10.20.31.255  Mask:255.255.255.0
          inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1
          RX packets:357 errors:0 dropped:0 overruns:0 frame:0
          TX packets:345 errors:0 dropped:340 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

    The AP is in the controller and shows as up. I can ping it with no problems. The firewalls have an allow all policy from the conrtoller to this AP. We do not see any GRE traffic coming from the conroller back to the AP.



  • 2.  RE: br0 dropped packets

    EMPLOYEE
    Posted May 04, 2015 04:19 PM

    How many and what firewalls are between your controller and AP?  Is any NAT involved?

    Dropped traffic is only a symptom, it does not say everything.



  • 3.  RE: br0 dropped packets

    Posted May 04, 2015 04:21 PM

    A PA5050 at the main campus and a PA200 at the remote. It is a VPN IPsec tunnel with no NAT.

     

     



  • 4.  RE: br0 dropped packets

    EMPLOYEE
    Posted May 04, 2015 04:25 PM

    In the AP group, in the AP system profile, I would lower the MTU to 1100



  • 5.  RE: br0 dropped packets

    Posted May 04, 2015 05:16 PM

    No luck. 

     

    We have some packet captures and the GRE ID appears to only be 9000. Its listed under the "Protocol Type". Is that correct?

     

    Screen Shot 2015-05-04 at 5.14.54 PM.png



  • 6.  RE: br0 dropped packets

    EMPLOYEE
    Posted May 06, 2015 06:54 AM

    hi playinpearls

    gre 9000 is the heartbeat. Drop on br0 may not in itself be an issue, can you share the output of the "show ap debug system-status" for all the interfaces ? is it incrementing in real time ?

    regards

    -jeff

     



  • 7.  RE: br0 dropped packets

    Posted May 06, 2015 09:12 AM

    Is that the correct place to look for port 9000 in wireshark?

     

     

    Here are the interfaces:

     

    ifconfig output for eth0

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

    eth0      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

                                                      

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for eth1

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

    eth1      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:0 errors:0 dropped:0 overruns:0 frame:0

              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

              Base address:0x8000 

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for bond0

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

    bond0     Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:0 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for br0

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

    br0       Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet addr:10.20.31.98  Bcast:10.20.31.255  Mask:255.255.255.0

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

              RX packets:63700 errors:0 dropped:183 overruns:0 frame:0

              TX packets:63189 errors:0 dropped:63023 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:6112      Rx multicast packet per second:4

              Tx broadcast packet:17028     Tx broadcast packet per second:0

              Tx multicast packet:45646     Tx multicast packet per second:1

     

    IP Information

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

    Reassemble Timeout packet         0

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

    Reassemble required packet        2

    Reassemble ok packet              1

    Reassemble failed packet          0

    Fragments received ok packet      3

    Fragments failed packet           0

    Fragments created packet          10

     



  • 8.  RE: br0 dropped packets

    Posted May 06, 2015 09:14 AM

    also:

     

    Interface Information

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

    Inter-|   Receive                                                |  Transmit

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

     face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed reset

        lo:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

      eth0: 17448953  130049    0    0    0     0          0         0  8590221   68241    0    0    0     0       0          0          0

      eth1:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

    dummy0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

     bond0: 17448953  130049    0    0    0     0          0         0  8590221   68241    0    0    0     0       0          0          0

     anul0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       ap0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       am0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

      gre0:       0   55383    0    0    0     0          0         0        0   64583    0    0    0     0       0          0          0

    apsos0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       br0:       0   63697    0  183    0     0          0         0        0   63189    0 63023    0     0       0          0          0

     wifi0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          2

     wifi1:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          2

     



  • 9.  RE: br0 dropped packets

    Posted May 06, 2015 09:18 AM

    Is that the correct place to view the port in wireshark? (the picture)

     

    Here is the intrerface summary from the ap:

     

    Interface Information

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

    Inter-|   Receive                                                |  Transmit

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

     face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed reset

        lo:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

      eth0: 17448953  130049    0    0    0     0          0         0  8590221   68241    0    0    0     0       0          0          0

      eth1:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

    dummy0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

     bond0: 17448953  130049    0    0    0     0          0         0  8590221   68241    0    0    0     0       0          0          0

     anul0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       ap0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       am0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

      gre0:       0   55383    0    0    0     0          0         0        0   64583    0    0    0     0       0          0          0

    apsos0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          0

       br0:       0   63697    0  183    0     0          0         0        0   63189    0 63023    0     0       0          0          0

     wifi0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          2

     wifi1:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0          2

     



  • 10.  RE: br0 dropped packets

    Posted May 06, 2015 09:19 AM

    well thats ugly.  Here's another.

     

    ifconfig output for eth0

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

    eth0      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

                                                      

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for eth1

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

    eth1      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:0 errors:0 dropped:0 overruns:0 frame:0

              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

              Base address:0x8000 

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for bond0

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

    bond0     Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:0 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for br0

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

    br0       Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet addr:10.20.31.98  Bcast:10.20.31.255  Mask:255.255.255.0

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

              RX packets:63700 errors:0 dropped:183 overruns:0 frame:0

              TX packets:63189 errors:0 dropped:63023 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:6112      Rx multicast packet per second:4

              Tx broadcast packet:17028     Tx broadcast packet per second:0

              Tx multicast packet:45646     Tx multicast packet per second:1

     

    IP Information

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

    Reassemble Timeout packet         0

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

    Reassemble required packet        2

    Reassemble ok packet              1

    Reassemble failed packet          0

    Fragments received ok packet      3

    Fragments failed packet           0

    Fragments created packet          10

     



  • 11.  RE: br0 dropped packets

    Posted May 06, 2015 09:22 AM

    Keeps deleting my posts...sorry if these show up as duplicate.

     

    Is that the correct place to view the port number in wireshark? (the picture)

     

    Here is the interface output of the ap

     

    ifconfig output for eth0

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

    eth0      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST RUNNING SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

                                                      

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for eth1

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

    eth1      Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              UP BROADCAST SLAVE MULTICAST  MTU:9000  Metric:1

              RX packets:0 errors:0 dropped:0 overruns:0 frame:0

              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

              Base address:0x8000 

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for bond0

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

    bond0     Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1

              RX packets:130053 errors:0 dropped:0 overruns:0 frame:0

              TX packets:68247 errors:0 dropped:0 overruns:0 carrier:0

              collisions:0 txqueuelen:0 

              RX bytes:17449985 (16.6 MiB)  TX bytes:8594925 (8.1 MiB)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:0         Rx multicast packet per second:0

              Tx broadcast packet:0         Tx broadcast packet per second:0

              Tx multicast packet:0         Tx multicast packet per second:0

     

    ifconfig output for br0

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

    br0       Link encap:Ethernet  HWaddr 94:B4:0F:C2:B3:AC  

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

              inet addr:10.20.31.98  Bcast:10.20.31.255  Mask:255.255.255.0

              inet6 addr: fe80::96b4:fff:fec2:b3ac/64 Scope:Link

              UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

              RX packets:63700 errors:0 dropped:183 overruns:0 frame:0

              TX packets:63189 errors:0 dropped:63023 overruns:0 carrier:0

              collisions:0 txqueuelen:1000 

              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

     

              Rx broadcast packet:0         Rx broadcast packet per second:0

              Rx multicast packet:6112      Rx multicast packet per second:4

              Tx broadcast packet:17028     Tx broadcast packet per second:0

              Tx multicast packet:45646     Tx multicast packet per second:1

     

    IP Information

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

    Reassemble Timeout packet         0

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

    Reassemble required packet        2

    Reassemble ok packet              1

    Reassemble failed packet          0

    Fragments received ok packet      3

    Fragments failed packet           0

    Fragments created packet          10

     



  • 12.  RE: br0 dropped packets

    EMPLOYEE
    Posted May 07, 2015 03:33 AM

    "Is that the correct place to view the port number in wireshark? (the picture)"

    not sure I quite understand your question - can you clarify ?

     

    As for the drop stats, looking around some lab APs I see that it's not uncommon to have drops on br0 device, same for my lab AP - the tx drop is almost the same as the tx packets on br0. Let me try and find out more from R&D, but I think it's not related to whatever problem your AP has.

     

    can you share the bootup console output and the dmesg output (go to AP shell and run dmesg, or use 'show ap debug log ap-name <>'). suspecting maybe a h/w issue and/or maybe regulatory issue or something like this. Check the error log on the controller for any messages from this AP too.

     

    regards

    -jeff