From: TCP IP4 (tcp.ip4@gmail.com)
Date: Sun Dec 07 2008 - 22:15:42 ARST
No, 2 state changes are needed for MST. Jason is right.
blocking -> learning: one forward-delay
learning -> forwarding: two forward-delays
Following is from a test switch with MST0 forward-delay set to 8 when port
is unshut:
*Mar 2 06:16:42.483: MST[0]: Gi1/0/5 state change disabled -> blocking
*Mar 2 06:16:42.626: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/5,
changed state to up
*Mar 2 06:16:43.632: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet1/0/5, changed state to up
*Mar 2 06:16:50.486: MST[0]: Gi1/0/5 state change blocking -> learning
*Mar 2 06:16:58.489: MST[0]: Gi1/0/5 state change learning -> forwarding
On Sun, Dec 7, 2008 at 3:16 PM, Ali El Moussaoui <mousawi.ali@gmail.com>wrote:
> MST has one forwarding delay so it should be "span mst forward 16".... any
> comments?
>
>
>
> On Sun, Dec 7, 2008 at 1:27 PM, Jason Madsen <madsen.jason@gmail.com>
> wrote:
>
> > With that wording I would assume we don't have to manipulate max-age etc.
> > and we should just be able to change the forward-time to 8 seconds.
> >
> > mst - spann mst forward 8
> > pvst - spann vlan x forward 8
> >
> > Jason
> >
> > On Sun, Dec 7, 2008 at 2:21 PM, Paul Adams <ccie.paul@gmail.com> wrote:
> >
> > > Hi GS,
> > >
> > > Got a scenario, hope to get some input on it.
> > >
> > >
> > > Sw3 is connected to Sw4, when the ports failed the other port will wait
> > for
> > > 16 sec before the interface begins forwarding
> > >
> > > ( ports fa 0/3-4) SW3==================SW4 ( ports fa 0/3-4)
> > >
> > >
> > > What configuration are required on SW3 in scenario of mode MST and
> > scenario
> > > of Mode PvST
> > >
> > >
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