[f-nsp] Unexpected CPU load on NetIron CER

Mat Perkins mat at instavps.com
Wed Oct 29 10:54:30 EDT 2014


I think the key here is:

no ip redirect
no ip icmp redirects


I have this running system wide, and I'm not on AMS-IX but I am on SIX

show cpu lp
SLOT  #:          LP CPU UTILIZATION in  %:
               in 1 second:  in 5 seconds:  in 60 seconds: in 300 seconds:
     1:        1             1              1               1
     3:        1             1              1               1


Mat

On Wed, Oct 29, 2014 at 3:09 AM, Youssef Bengelloun-Zahr <youssef at 720.fr>
wrote:

> Hello Bardo,
>
> Running an MLXe-4 box (NI 5.4.0.d) connected to AMS-IX via 1G port, here
> is my config :
>
> interface ethernet 3/3
>  port-name to PEERING : AMS-IX (EDGE-TC5-019 GE-2/1)
>  enable
>  load-interval 30
>  ip address blablablabla/21
>  no ip redirect
>  ip mtu 1500
>  ipv6 address blablablabla/64
>  ipv6 enable
>  ipv6 nd suppress-ra
>  sflow forwarding
>
> No unusual high cpu-utilization :
>
> 09:08:34 GMT+00 Wed Oct 29 2014
>
> SLOT  #:               LP CPU UTILIZATION in  %:
>              in 1 second:  in 5 seconds:  in 60 seconds: in 300 seconds:
>      3:        4             5              5               6
>
>
> Hope this helps.
>
> Best regards.
>
>
>
>
> 2014-10-29 9:58 GMT+01:00 Bardo Cornelissen <b.cornelissen at caveo.nl>:
>
>> Hi,
>>
>> Well that indeed solved the 50-60% load I experienced with "route-only"
>> configured on the interface. I'm still stuck 8% cpu-utilization on LP
>> though. Is anyone on this list connected to AMS-IX with a CER or MLX(e),
>> not
>> experiencing this and willing to compare some interface configuration and
>> debug packet captures?
>>
>> #sh cpu lp
>>
>> 09:37:37 GMT+01 Wed Oct 29 2014
>>
>> SLOT  #:          LP CPU UTILIZATION in  %:
>>                in 1 second:  in 5 seconds:  in 60 seconds: in 300 seconds:
>>      1:        8             8              8               8
>>      2:        8             8              8               8
>>
>> I'm seeing a lot of these when debugging:
>> **********************************************************************
>> [ppcr_rx_packet]: Packet received
>> Time stamp : 00 day(s) 09h 17m 48s:,
>> **********************************************************************
>> Packet size: 102, XPP reason code: 0x00000000
>> 00: 0000 e40c 4010 e00b-1000 0000 0000 0000  FID     = 0x0000
>> 10: 3333 ff34 0001 0012-f29f 19c0 86dd 6c00  Offset  = 0x10
>> 20: 0000 0020 3aff 2001-07f8 0001 0000 0000  VLAN    = 11(0x000b)
>> 30: a502 5542 0001 ff02-0000 0000 0000 0000  CAM     = 0x00000(L)
>> 40: 0001 ff34 0001 8700-5787 0000 0000 2001  RX Qid  =   6
>> 50: 07f8 0001 0000 0000-a501 2634 0001 0101  CPU_CODE = 506
>> 60: 0012 f29f 19c0 5555-5555 2634 0001 0101
>> 70: 55ff ffff ffff ffff-5555 55e9 4003 0450
>> Pri CPU MON SRC   PType US BRD DAV SAV DPV SV ER TXA SAS Tag MVID
>> 7   1   0   2/1   c     0  1   0   0   0   0  0  0   0   0   0
>>
>> 2001:07f8:0001:0000:0000:a502:5542:0001 ->
>> ff02:0000:0000:0000:0000:0001:ff34:0001 ICMPv6
>>
>> **********************************************************************
>> [ppcr_tx_packet] ACTION: Drop packet(reason: Route-only enabled(CV))
>> [ppcr_rx_packet]: Packet received
>> Time stamp : 00 day(s) 09h 17m 48s:,
>> **********************************************************************
>> Packet size: 102, XPP reason code: 0x00000000
>> 00: 0000 e40c 4010 e00b-1000 0000 0000 0000  FID     = 0x0000
>> 10: 3333 ff96 0001 28c0-da85 bb00 86dd 6000  Offset  = 0x10
>> 20: 0000 0020 3aff fe80-0000 0000 0000 2ac0  VLAN    = 11(0x000b)
>> 30: da07 3285 bb00 ff02-0000 0000 0000 0000  CAM     = 0x00000(L)
>> 40: 0001 ff96 0001 8700-c35c 0000 0000 2001  RX Qid  =   6
>> 50: 07f8 0001 0000 0000-a504 3996 0001 0101  CPU_CODE = 506
>> 60: 28c0 da85 bb00 5555-5555 3996 0001 0101
>> 70: 55ff ffff ffff ffff-55c8 4003 0450 f9d2
>> Pri CPU MON SRC   PType US BRD DAV SAV DPV SV ER TXA SAS Tag MVID
>> 7   1   0   2/1   c     0  1   0   0   0   0  0  0   0   0   0
>>
>> fe80:0000:0000:0000:2ac0:da07:3285:bb00 ->
>> ff02:0000:0000:0000:0000:0001:ff96:0001 ICMPv6
>>
>> **********************************************************************
>> [ppcr_tx_packet] ACTION: Drop packet(reason: Route-only enabled(CV))
>> [ppcr_rx_packet]: Packet received
>> Time stamp : 00 day(s) 09h 17m 48s:,
>> **********************************************************************
>> Packet size: 102, XPP reason code: 0x00000000
>> 00: 0000 e40c 4010 e00b-1000 0000 0000 0000  FID     = 0x0000
>> 10: 3333 ff50 0001 28c0-da85 bb00 86dd 6000  Offset  = 0x10
>> 20: 0000 0020 3aff fe80-0000 0000 0000 2ac0  VLAN    = 11(0x000b)
>> 30: da07 3285 bb00 ff02-0000 0000 0000 0000  CAM     = 0x00000(L)
>> 40: 0001 ff50 0001 8700-97e7 0000 0000 2001  RX Qid  =   6
>> 50: 07f8 0001 0000 0000-a505 6550 0001 0101  CPU_CODE = 506
>> 60: 28c0 da85 bb00 5555-5555 6550 0001 0101
>> 70: 55ff ffff ffff ffff-55da 4003 0450 f9d2
>> Pri CPU MON SRC   PType US BRD DAV SAV DPV SV ER TXA SAS Tag MVID
>> 7   1   0   2/1   c     0  1   0   0   0   0  0  0   0   0   0
>>
>> fe80:0000:0000:0000:2ac0:da07:3285:bb00 ->
>> ff02:0000:0000:0000:0000:0001:ff50:0001 ICMPv6
>>
>> **********************************************************************
>>
>> Met vriendelijke groet,
>>
>> Bardo Cornelissen
>>
>> Caveo Internet BV
>> Ambachtsstraat 10
>> 3176 PR Poortugaal
>> The Netherlands
>> http://www.caveo.nl
>>
>> Tel: +31-10-5065520
>> Fax: +31-10-5065521
>>
>>
>> -----Oorspronkelijk bericht-----
>> Van: foundry-nsp [mailto:foundry-nsp-bounces at puck.nether.net] Namens
>> Bardo
>> Cornelissen
>> Verzonden: dinsdag 28 oktober 2014 10:01
>> Aan: 'Lutz Knabenreich'; foundry-nsp at puck.nether.net
>> Onderwerp: Re: [f-nsp] Unexpected CPU load on NetIron CER
>>
>> Hi,
>>
>> Since I'm working on 5500c, that's worth a try ;-)
>>
>> Thanks for your feedback!
>>
>> Kind regards,
>>
>> Bardo Cornelissen
>> Caveo Internet BV
>> http://www.caveo.nl
>>
>>
>> -----Oorspronkelijk bericht-----
>> Van: foundry-nsp [mailto:foundry-nsp-bounces at puck.nether.net] Namens Lutz
>> Knabenreich
>> Verzonden: dinsdag 28 oktober 2014 09:55
>> Aan: foundry-nsp at puck.nether.net
>> Onderwerp: Re: [f-nsp] Unexpected CPU load on NetIron CER
>>
>> Hi,
>>
>>  > Has anyone seen similar behavior?
>>  >
>>  > IronWare : Version 5.5.0cT183 Copyright (c) 1996-2013 Brocade
>> Communications  > Systems, Inc.
>>  >
>>
>> when we started to test the CER 2024F-4x in our environment we discovered
>> high cpu load as well, when using IPv6.
>>
>> "sh cpu lp" was at unusual high levels:
>>
>> 09:15:15 GMT+01 Thu Sep 26 2013
>>
>> SLOT #: LP CPU UTILIZATION in %:
>> in 1 second: in 5 seconds: in 60 seconds: in 300 seconds:
>> 1: 67 67 67 67
>> 2: 67 67 67 67
>>
>> The root cause was found in a high amount of ipv6 discovery and
>> solliciatations.
>>
>> In our specific case it was fixed in 5500d, and the issue was traced back
>> to
>> the fix made for 459558 in 5500c.
>>
>>
>> Best regards
>> Lutz Knabenreich
>> --
>> HKN GmbH                     Tel: +49 211 875505-0
>> Lutz Knabenreich             Fax: +49 211 87550555
>> Hochstadenstr. 5                 http://www.hkn.de
>> 47829 Krefeld            mailto:knabenreich at hkn.de
>>
>> Technik Standort:
>> In der Steele 29
>> 40599 Duesseldorf
>>
>> Eingetragen am Amtsgericht Krefeld       HRB 12335
>> Geschaeftsfuehrer                 Lutz Knabenreich
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>
>
>
> --
> Youssef BENGELLOUN-ZAHR
>
> _______________________________________________
> foundry-nsp mailing list
> foundry-nsp at puck.nether.net
> http://puck.nether.net/mailman/listinfo/foundry-nsp
>
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