Re: Cisco-HP ?

Check the back plane on the blade switch. I have seen them hang open for
STP causing a loop. One way to prevent that is to knock out the back plane
and rely on the two uplinks assuming the server is dual homed.

On Fri, Oct 3, 2014 at 2:42 AM, Haroon <itguy.pro_at_gmail.com> wrote:

> Virtualconnects?
>
> Sent from a mobile phone!
> On Oct 2, 2014 9:37 PM, "Jeremy Garver" <jbgarver_at_gmail.com> wrote:
>
> > I had this problem quite a few years back. I was stumped at first because
> > it was most likely a bridging loop, but I was confused at the source
> > since I thought I had all the switches accounted for and STP was
> enabled. I
> > found it because the server guys decided to use the outage to perform
> > maintenance on the Blade Chassis. As soon as they shut it down;
> everything
> > went back to normal on my core.
> >
> > At the time I didn't know that much about spanning-tree, so I just turned
> > on spanning-tree on the HP as I found out at that time that HP Procurves
> do
> > not have STP enabled by default.
> >
> > I never had the problem again and I have never been back into an HP
> chassis
> > switch. Plenty of other HP Procurves, though. The newer H3C switches by
> HP
> > do come with STP enabled by default at least, but they are still a pain.
> >
> > If I had it to do now; I would handle it the same way Marc suggested and
> > enable MST everywhere and make sure that your cores are root; dividing
> the
> > VLANs accordingly across the cores (one core handling root for half the
> > VLANs and the other core handling root for the other half). That is,
> > assuming that you have dual cores. Everyone should, but not everyone can
> > afford them; especially when using Ci$co.
> >
> > On Thu, Oct 2, 2014 at 8:38 PM, marc abel <marcabel_at_gmail.com> wrote:
> >
> > > Filtering BPDUs is likely to make the problem worse, not better.
> > >
> > > On Thu, Oct 2, 2014 at 7:35 PM, kapilatrish <kapilatrish_at_hotmail.com>
> > > wrote:
> > >
> > > > If cisco says its a spanning tree issue can't you filter the bpdus on
> > the
> > > > port?
> > > >
> > > >
> > > > Sent from Samsung Mobile
> > > >
> > > > -------- Original message --------
> > > > From: Cisco Fanatic <ebay_products_at_hotmail.com>
> > > > Date:02/10/2014 7:48 PM (GMT-05:00)
> > > > To: ccielab_at_groupstudy.com
> > > > Subject: Cisco-HP ?
> > > >
> > > > This is really getting to my nerves. I have a WS-C4500X-16SFP+ switch
> > > > connected to HP Blade and we already had 2 outages in the past week.
> > > > HP is saying that they don't see an issue on their blades and Cisco
> TAC
> > > is
> > > > saying it's to do with HP blade which is running VMs that is causing
> > > > spanning
> > > > tree issues.
> > > > Please I needs some insight into this from people who have worked on
> HP
> > > and
> > > > Cisco platform.
> > > > Are there any know interoperability issues between Cisco and HP?
> > > > Also, is there a best practice design which explain how to connect
> > Cisco
> > > > with
> > > > HP Blade Servers?
> > > > Yuri
> > > >
> > > >
> > > > Blogs and organic groups at http://www.ccie.net
> > > >
> > > >
> _______________________________________________________________________
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> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Marc Abel
> > > CCIE #35470
> > > (Routing and Switching)
> > >
> > >
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Received on Fri Oct 03 2014 - 06:04:44 ART