From: Godswill Oletu (oletu@inbox.lv)
Date: Thu Mar 23 2006 - 09:39:24 GMT-3
I thought PVST is the CISCO way of doing thing (SPT), since you want to
connect to a third party switch, why not look into the industrial standard
method of implementing SPT ie MST or MIST (depending on which text you are
reading).
All VLANs can just be a member of one instance.
----- Original Message -----
From: "Venkatesh Palani" <kvpalani@gmail.com>
To: "Henk de Tombe" <henk.de.tombe@qi.nl>
Cc: "CCIE LAB" <ccielab@groupstudy.com>
Sent: Thursday, March 23, 2006 6:33 AM
Subject: Re: SPT between CISCO and FOUNDRY
> Hi Henk,
>
> Thanks a lot for your reply, it surely helps me a lot, I am planning to do
> PVST as I want to split traffic between two MAN connections.
> Thank you,
> venkatesh
>
>
> On 3/23/06, Henk de Tombe <henk.de.tombe@qi.nl> wrote:
> >
> > Hi Venkatesh,
> >
> > Do you mean 802.1D With STP? It will work just fine, the only thing you
> > have
> > to take care of is the native VLAN behaviour of both devices.
> >
> > Foundry tags all VLANS, cisco switch can be configured to tag (vlan
dot1q
> > tag native) native vlan or not. So the native VLAN on the cisco doesn't
> > make
> > it throughout the foundry network. You can either tag the native vlan on
> > the
> > cisco, OR.....
> >
> > You can enable dual-mode port config on the foundry's interface to the
> > cisco, see example below
> >
> > Vlan 10
> > Tag eth 1
> > !
> > Vlan 11
> > Tag eth 1
> > !
> > Int e 1
> > Dual-mode 10
> >
> >
> > With this configuration you tell the foundry to accept tagged and
untagged
> > ports on ethernet 1.
> >
> >
> > One option regarding STP you have to look out for is the command
> > "pvst-mode"
> > under the interface:
> >
> >
> >
>
http://www.foundrynet.com/services/documentation/srcli/Interface_cmds.html#w
> > p126004
> >
> > Per default the foundry reverts to cisco PVST BPDU when it receives one.
> > If
> > you already know that PVST will be "offered" to the foundry just
hard-code
> > it in, you never know!
> >
> > Regards,
> > Henk
> >
> >
> > Met vriendelijke groet,
> >
> > Q&I
> >
> > Henk de Tombe
> > Network Engineer
> > Q&I NEDERLAND BV
> > Delftech Park 35 - 37
> > P.O. Box 402 - 2600 AK DELFT
> > Phone [+31] 15-8880444 - Fax [+31] 15-8880445
> > info@qi.nl - www.qi.nl
> >
> > Bezoek Q&I op de Intertraffic in de RAI te Amsterdam op 4 tm 7 april
2006
> > -----Oorspronkelijk bericht-----
> > Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens
Venkatesh
> > Palani
> > Verzonden: donderdag 23 maart 2006 10:45
> > Aan: CCIE LAB
> > Onderwerp: OT: SPT between CISCO and FOUNDRY
> >
> > Hi Guys,
> >
> > I wonder if you guys have come across any starnge behavior/issues when
> > running SPT between Cisco and Foundry devices. I am about to deploy few
> > cisco 6500 switches into a pure foundry network that runs STP and so
> > trying
> > to get prepared for any unexpected surprises :-).
> >
> > Thank you,
> > Venkatesh
> >
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