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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Received on Thu Oct 15 2009 - 20:12:03 ART