[f-nsp] Brocade FCX Stack Issue

[salman sadiq]

Hi,
 We were 7.2d and 7.4d before the upgrade. The reason for upgrade was dhcp
snooping bug in 7.4f pre releases. Due to this bug the switch with DHCP
Snooping enabled drops type 4 dhcp packets on untrusted ports. Hence any
client trying to send a dhcp decline to the dhcp server, in our case as a
result of duplicate ip assigment, fails. Thus the DHCP cannot detect a
duplicate IP resulting in the poor client stuck with an ip that it cannot
utilize. The client eventually sends a discover again and the DHCP server
keeps offering the same IP which is already on the network.

We are using the routing code. Have you seen memory leak on 7.4f as well?
The two problems I've seen on 7.4f are
stack sync issues
Arp table having  a lot of entries in "Pending" state.

BR
Salman


On Fri, Jun 6, 2014 at 11:30 AM, Ronald Esveld <ronald.esveld at qi.nl> wrote:

> Nick,
>
> We had issues with an SSH monitor as well.
> Disabling that fixes the memory leak (1% mem e3xtra per day used)
>
> -Ronald
>
>
> Met vriendelijke groet,
> With kind regards,
>
> Ronald Esveld
> senior network engineer
>
> Qi ict
>
> Delftechpark 35-37
> Postbus 402, 2600 AK Delft
>
>
> T : +31 15 888 0 444
> F : +31 15 888 0 445
> E : mailto:ronald.esveld at qi.nl
> I : http://www.qi.nl
>
> -----Oorspronkelijk bericht-----
> Van: foundry-nsp [mailto:foundry-nsp-bounces at puck.nether.net] Namens Nick
> Hilliard
> Verzonden: donderdag 5 juni 2014 14:22
> Aan: Jon Maiman; salman sadiq
> CC: foundry-nsp at puck.nether.net
> Onderwerp: Re: [f-nsp] Brocade FCX Stack Issue
>
> On 05/06/2014 12:58, Jon Maiman wrote:
> >   For FCX (and ICX6610 unless you need mixed family stacking) you should
> > stick to the 7.3.0 code train.   I recommend going to 7.3.0h.
>
> I'm seeing some bad memory leak issues on 7.3.00h which weren't present in
> 7.3.00d (on ti-x24 not fcx, so ymmv).  Not sure which exact version they
> appeared, but am losing ~5% memory per week on affected boxes.  Haven't
> found the root cause yet, but suspect snmp polling.
>
> Also, all versions of 7.3 and 7.4 leak about 4k of memory every time you
> run nagios check_ssh against them.  This is fixed in 8.x and there are
> plans to fix it in 7.4.00h, but not 7.3.
>
> Nick
>
>
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