[f-nsp] arp problem on brocade mlx

[Youssef Bengelloun-Zahr]

Hello, Tudor,

Could you please share the DEFECT id please ?

Best regards.



2015-12-22 16:21 GMT+01:00 Tudor Capatina via foundry-nsp <
foundry-nsp at puck.nether.net>:

> Thanks for the reply Eldon,
>
> in the end it was a software bug which caused MP and LP not to be in sync.
> I powered off / on the card and it came back to life.
>
> Happy holidays!
> Tudor
> --------------------------------------------
> On Thu, 12/17/15, Eldon Koyle <ekoyle+puck.nether.net at gmail.com> wrote:
>
>  Subject: Re: [f-nsp] arp problem on brocade mlx
>  To: "Tudor Capatina" <ktudore at yahoo.com>
>  Cc: foundry-nsp at puck.nether.net
>  Date: Thursday, December 17, 2015, 9:04 PM
>
>  You might check the
>  number of MAC addresses it sees (sh mac)... if
>  there is a device going insane somewhere, it
>  could exhaust the mac
>  forwarding DB and
>  cause strange behavior.
>
>  sh
>  default values | inc mac
>  SSH at mlx4#sh default values |
>  inc mac
>  sys log buffers:50
>     mac age time:300 sec       telnet
>  sessions:5
>  mac
>    32768      1048576    32768      32768
>  32768      Yes
>  vpls-mac
>               2048
>     262144     2048
>     2048
>  2048
>     Yes
>  SSH at mlx4#
>
>  Do you have spanning tree
>  running on this interface?
>
>  I'm assuming these interfaces are in the
>  default VRF, but if not it
>  opens up a whole
>  world of other possibilities.
>
>  You could also check the TM log, although you
>  would have to open a
>  ticket to find out what
>  any of it meant:
>  sh tm log
>
>
>  On Wed, Dec 16, 2015 at
>  10:44 AM, Tudor Capatina via foundry-nsp
>  <foundry-nsp at puck.nether.net>
>  wrote:
>  > Hello all,
>  >
>  > on a brocade mlx-4
>  running IronWare : Version 5.4.0fT163, following a crash
>  (was doing a no ip route under a ip vrf and the box rebooted
>  itself), I am facing a weird problem.
>  >
>  > On a 10G interface i
>  have several customers, each connected in a vlan, with a
>  vlan interface and a /30 used for the connection. All were
>  working ok before the crash. Now on some of them i get the
>  following behaviour: i receive a mac-address all the time,
>  at times there is an arp entry, after some time it is gone,
>  later it works again (sometime after a cpe reboot, sometime
>  it just works).
>  >
>  > It
>  sounded to me like a cache or an arp limit problem but:
>  >
>  > sh ip cache
>  > Total IP and IPVPN Cache Entry Usage on
>  LPs:
>  >  Module        Host
>  Network       Free      Total
>  >       1        3745
>     361450     159093
>     524288
>  >
>     2        4132     361450
>     158706     524288
>  >       3        4996
>     361450     157842
>     524288
>  >
>     4        4884     361450
>     157954     524288
>  >
>  >
>  >
>  respectively:
>  > #sh default values | i
>  arp
>  > ip arp age:10 min
>  bootp relay max hops:4     ip ttl:64 hops
>  > ip-arp
>     8192       65536      8192
>       8192       8192
>     No
>  >
>  >
>  while my arp usage is of 2k (as seen by show arp)
>  >
>  > Any ideas what i
>  could look at or what might cause this? Logs do not mention
>  anything relevant.
>  >
>  >
>  Thanks a lot,
>  > Tudor
>  >
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-- 
Youssef BENGELLOUN-ZAHR
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