Re: covergence in RSTP

yes Nick ..... I checked it yerterday in junos configs....

On Tue, Jun 26, 2012 at 8:30 PM, Marko Milivojevic <markom_at_ipexpert.com>wrote:

> Ah... that will have an interesting interoperation with Cisco's STP :-)
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor - IPexpert
>
> On Tue, Jun 26, 2012 at 10:29 AM, Nicky <ccienovice_at_gmail.com> wrote:
> > Hi Shekhar,
> >
> > As Brian has mentioned, in non-cisco environment the command is "edge".
> >
> > The command would be:-
> >
> > *set protocols rstp interface ge-0/0/1 edge*
> >
> > HTH.
> >
> > Cheers,
> > Nicky
> >
> > On Mon, Jun 25, 2012 at 8:52 PM, shekhar sharma
> > <shekhar.sharma21_at_gmail.com>wrote:
> >
> >> Hi brian,
> >>
> >> Agreed on that part......
> >>
> >> But my doubt is how things will work in non-cisco environment e.g
> juniper
> >> ,HP etc...
> >>
> >> Is this vendors have alternate command....or edge ports will still
> suffer.
> >> from time dealy...........................................
> >> I m sorry but nt have any expereince with non-cisco swithes....just
> want to
> >> understand the protocol from deep....as how RSTP behaves for access
> >> ports.... in general...
> >>
> >>
> >> regards,
> >> Shekhar
> >> On Mon, Jun 25, 2012 at 6:54 PM, Brian McGahan <bmcgahan_at_ine.com>
> wrote:
> >>
> >> > Hi Shekhar,
> >> >
> >> > It's technically not portfast, its configuring the link as an edge
> port.
> >> > In Catalyst IOS when you're running RSTP the links don't run as edge
> >> ports
> >> > automatically. Instead of adding a "spanning-tree edge" or similar
> >> > command, they simply made the "spanning-tree portfast" command do the
> >> same
> >> > thing. The idea is that if you're migrating from legacy PVST to Rapid
> >> PVST
> >> > or to MST, your ports that used to be portfast ports now become edge
> >> ports.
> >> > They basically do the same thing, but in RSTP they're called edge
> ports
> >> > instead of portfast ports.
> >> >
> >> >
> >> > HTH,
> >> >
> >> > Brian McGahan, CCIE #8593 (R&S/SP/Security)
> >> > bmcgahan_at_INE.com
> >> >
> >> > Internetwork Expert, Inc.
> >> > http://www.INE.com
> >> >
> >> > -----Original Message-----
> >> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of
> >> > Bruno Silva
> >> > Sent: Monday, June 25, 2012 9:36 AM
> >> > To: shekhar sharma
> >> > Cc: Cisco certification
> >> > Subject: Re: covergence in RSTP
> >> >
> >> > you will still have to use portfast even with RSTP due to standard
> >> > specifications.
> >> >
> >> > On Mon, Jun 25, 2012 at 9:49 AM, shekhar sharma
> >> > <shekhar.sharma21_at_gmail.com>wrote:
> >> >
> >> > > Hi Experts ,
> >> > >
> >> > > I know RSTP is mush faster than legacy STP or PVST because of its
> >> > > alternate ,,,back ports & a different algorithm to achive faster
> >> > > convergence in the interswitch links & uplinks.
> >> > >
> >> > > But I am little confused about its behaviour for edge ports i.e
> access
> >> > > ports.
> >> > >
> >> > > Yesterday I have done some tests ,,,.Observation is without
> enablings
> >> > > portfast on acess ports ,if I am doing shut/noshut on that
> accessport
> >> > > interface. convergence is slow and I am getting 10 packet drops b/w
> >> > > the pings.
> >> > >
> >> > > But with portfast enabled , convergence is faster and my gettig 2-3
> >> > > packet drop.
> >> > >
> >> > > So, the question is if portfast is still required in RSTP ,then how
> >> > > will we utilize its use in non-cisco environment .since portfast is
> >> > > cisco propriteiry.....
> >> > >
> >> > > Thanks,
> >> > > Shekhar
> >> > >
> >> > >
> >> > > Blogs and organic groups at http://www.ccie.net
> >> > >
> >> > >
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Received on Tue Jun 26 2012 - 21:00:41 ART