[c-nsp] ME3600 BFD flapping

jure brkljacic zblajhani at gmail.com
Wed Aug 27 07:06:15 EDT 2014


Hi,

Please find the required information

router_2#show platform aspdma all_counters 0
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------
0   15         1578          1638          0        0        0        0
   0        0
1   130894480  9053793470    9577371390    0        0        0        0
   0        0
3   20844      4660953       4744329       0        0        0        0
   0        0
6   526414     70518175      72623831      0        0        0        0
   0        0
8   80236      4816184       5137128       0        0        0        0
   0        0
12  408        111832        113464        0        0        0        0
   0        41
17  8          816           848           0        0        0        0
   0        0
26  17900495   2222454012    2294055992    0        0        0        0
   0        1320
27  178        18308         19020         0        0        0        0
   0        0
28  1326543    99865500      105171672     0        0        0        0
   0        114
29  17646      1260973       1331557       0        0        0        0
   0        75

TxQ Pkts       Bytes         ixBytes       Tx_error
---------------------------------------------------
0   120157115  8190077496    8670705956    0
1   76         5122          5426          0

router_2#show platform aspdma all_counters 0
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------
0   15         1578          1638          0        0        0        0
   0        0
1   130894886  9053821544    9577401088    0        0        0        0
   0        0
3   20844      4660953       4744329       0        0        0        0
   0        0
6   526415     70518299      72623959      0        0        0        0
   0        0
8   80236      4816184       5137128       0        0        0        0
   0        0
12  408        111832        113464        0        0        0        0
   0        41
17  8          816           848           0        0        0        0
   0        0
26  17900538   2222459286    2294061438    0        0        0        0
   0        1320
27  178        18308         19020         0        0        0        0
   0        0
28  1326550    99866013      105172213     0        0        0        0
   0        114
29  17646      1260973       1331557       0        0        0        0
   0        75

TxQ Pkts       Bytes         ixBytes       Tx_error
---------------------------------------------------
0   120157485  8190102532    8670732472    0
1   76         5122          5426          0

router_2#show platform aspdma all_counters 0
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------
0   15         1578          1638          0        0        0        0
   0        0
1   130895174  9053841476    9577422172    0        0        0        0
   0        0
3   20844      4660953       4744329       0        0        0        0
   0        0
6   526417     70518547      72624215      0        0        0        0
   0        0
8   80236      4816184       5137128       0        0        0        0
   0        0
12  408        111832        113464        0        0        0        0
   0        41
17  8          816           848           0        0        0        0
   0        0
26  17900575   2222463888    2294066188    0        0        0        0
   0        1320
27  178        18308         19020         0        0        0        0
   0        0
28  1326553    99866233      105172445     0        0        0        0
   0        114
29  17646      1260973       1331557       0        0        0        0
   0        75

TxQ Pkts       Bytes         ixBytes       Tx_error



router_2#show platform aspdma all_counters 1
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------

TxQ Pkts       Bytes         ixBytes       Tx_error
---------------------------------------------------
0   17533102   1323820661    1393953069    0
1   20944      6463501       6547277       0

router_2#show platform aspdma all_counters 1
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------

TxQ Pkts       Bytes         ixBytes       Tx_error
---------------------------------------------------
0   17533160   1323824751    1393957391    0
1   20944      6463501       6547277       0

router_2#show platform aspdma all_counters 1
RxQ Pkts       Bytes         ixBytes       buffail  refltry  reflfail
jmbfail  Rx_err   Jumbo
------------------------------------------------------------------------------------------------

TxQ Pkts       Bytes         ixBytes       Tx_error
---------------------------------------------------
0   17533192   1323827157    1393959925    0
1   20944      6463501       6547277       0


router_2#show platform qos policer cpu 1 0
########### Stats for CPU queue 1 ##########
Internal Qnum: 18177
Policer conform: 130906793 (packets) 9054645150 (bytes)
Policer exceed: 0 (packets) 0 (bytes)
RM Drops: 0 (packets) 0 (bytes)
#############################################

router_2#show platform qos policer cpu 1 0
########### Stats for CPU queue 1 ##########
Internal Qnum: 18177
Policer conform: 130907229 (packets) 9054675294 (bytes)
Policer exceed: 0 (packets) 0 (bytes)
RM Drops: 0 (packets) 0 (bytes)
#############################################

router_2#show platform qos policer cpu 1 0
########### Stats for CPU queue 1 ##########
Internal Qnum: 18177
Policer conform: 130907665 (packets) 9054705452 (bytes)
Policer exceed: 0 (packets) 0 (bytes)
RM Drops: 0 (packets) 0 (bytes)
#############################################



On Wed, Aug 27, 2014 at 9:44 AM, Vitkovský Adam <adam.vitkovsky at swan.sk>
wrote:

> Hi Jure,
>
> 35 is a lot of BFD sessions and on ME3600X BFD is handled by CPU.
>
> You can check the CPU queues BFD uses queue 1:
> Take these two or three times in a row:
> show platform aspdma all_counters 0
> or
> show platform aspdma all_counters 1
> and
> show platform qos policer cpu 1 0
>
> Then you can check for BGD drops:
> show bfd drops
>
> Or you can check if there are some interface discard counters incrementing:
> show interfaces counters errors
>
>
> Oh and in order to take the above cmds you might need to enable service
> internal
> conf t
>  service internal
> exit
>
>
> adam
>
> > -----Original Message-----
> > From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> > jure brkljacic
> > Sent: Tuesday, August 26, 2014 1:50 PM
> > To: cisco-nsp at puck.nether.net
> > Subject: [c-nsp] ME3600 BFD flapping
> >
> > Hi,
> >
> > We have a huge problems with BFD flapping on ME3600.It`s random event on
> > two 3600 connected to the "same" end system.
> >
> > a.) First we thought that interface output drops causing BFD
> flapping.Than
> > we configure a
> >      a output queue policy to eliminate interface output drops. BFD
> flapping
> > still there :(
> >
> > Code running:me360x-universalk9-mz.153-3.S3
> > Number of BFD sessions: ~35
> > timers:150 multiplier 3
> > CPU:~10%
> >
> > Any help will be greatly appreciated.
> > _______________________________________________
> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
>


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