RE: STP issue

Hady,

Just shut down the interconnect between the enclosure switches. Since the
enclosures are connected to the 6509's and the 6509's are connected to one
another, you don't need that extra layer of complexity. HP has some decent
documentation on how to position both the 3020's (Cisco) and their BE switches
into a Cisco network. Might want to give that a shot.

-ryan

From: hady tannous [mailto:hadytannous_at_hotmail.com]
Sent: Thursday, October 15, 2009 4:12 PM
To: Ryan West; sergehh_at_hotmail.com; CCIE group study
Subject: RE: STP issue

Hi Ryan,

Thx for the info. We tested LACP and for some reason it's not working. Anyway
i will double check. Moreover the customer has a G1 enclosure which does not
support LACP so i'm still faced with the same issue !!!

Any ideas ?

thx

> From: rwest_at_zyedge.com
> To: hadytannous_at_hotmail.com; sergehh_at_hotmail.com; ccielab_at_groupstudy.com
> Date: Thu, 15 Oct 2009 09:19:55 -0400
> Subject: RE: STP issue
>
> Hadi,
>
> It seems that the HP enclosure G2 should support LACP, try setting that for
failure detection.
>
>
http://209.85.229.132/search?q=cache:SbUH_HtQyd4J:h18004.www1.hp.com/products
/quickspecs/13209_na/13209_na.pdf+HP+enclosure+G2+LACP&cd=1&hl=en&ct=clnk&gl=
us&client=firefox-a
>
> -ryan
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of hady
tannous
> Sent: Thursday, October 15, 2009 1:25 AM
> To: sergehh_at_hotmail.com; CCIE group study
> Subject: RE: STP issue
>
> Hi,
>
>
>
> the running config of the interfaces in the etherchannel is the following :
>
>
>
> interface gig1/1/3
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig1/1/4
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig2/1/3
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig2/1/4
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> interface gig1/1/1
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig1/1/2
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig2/1/1
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
> interface gig2/1/2
>
> switchport
>
> switchport mode access
>
> switchport access vlan 10
>
> channel-group 10 mode on
>
>
>
>
>
> The non cisco switches are an HP enclosure G2
>
>
>
> thx,
>
> Hadi
>
>
>
>
> From: sergehh_at_hotmail.com
> To: hadytannous_at_hotmail.com
> Subject: RE: STP issue
> Date: Wed, 14 Oct 2009 14:15:48 -0700
>
>
>
> can you copy paste the configs and the non cisco switch model types and
> spannning -tree version that the switches are running.
>
> > From: hadytannous_at_hotmail.com
> > To: ccielab_at_groupstudy.com
> > Subject: STP issue
> > Date: Wed, 14 Oct 2009 20:43:56 +0000
> >
> > Hi,
> > I have 3 switches connected in a full mesh at a Customer's site.
> >
> > One Cisco 6500 switch and 2 NON CISCO switches. The NON CISCO switches
have
> > each 4 physical connections with the 6500 and 2 between each others. the
> > issue
> > is the following:
> >
> > The NON CISCO switches are supposed to form an etherchannel with the
6500,
> > but
> > they neither support LACP nor PAGP. Thus the only left etherchannel
method
> is
> > on.
> >
> > On the catalyst 6500 the configuration for the etherchannel is correct.
> >
> > The Loop occurs when my customer misconfigures the etherchannel from the
> NON
> > CISCO switches side.
> >
> > We end up having etherchannel config from one end (6500) and normal links
> from
> > the NON CISCO switches end.
> >
> > Since the etherchannel ports on the 6500 will have the same parameters,
all
> > the NON CISCO ports will end up forwarding and an STP loop is formed
> causing
> > the network to go down.
> >
> > Now etherchannel guard is enabled but it's not putting the ports into
error
> > disable mode on the 6500 ( I guess because of compatibility between Cisco
> and
> > Non Cisco Switches).
> >
> > Is there any way in case the customer misconfigures the NON CISCO
switches
> to
> > prevent a loop ?
> >
> >
> > Thx,
> > Hadi
> > _________________________________________________________________
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> >
>
>
>
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Received on Thu Oct 15 2009 - 16:27:09 ART