From: Prashanth (prashanthcm@yahoo.com)
Date: Thu Nov 07 2002 - 18:15:22 GMT-3
--- Jaroslaw Zak <jaroslawz@hotmail.com> wrote:
> Hi,
>
> Suppose you have simple case where IP phone is
> plugged to FXS port of your
> router,
how ??? RJ-45 vs RJ-11?
you have completed standard voice config:
>
> dial-peer voice 1 pots
> destination-pattern 111
> port 1/0/0
>
> dial-peer voice 2 voip
> destination pattern 222
> session target...
>
> then when you pick up the hook and try to dial 222
> you get constant signal
> all the time, even during dialing and of course call
> is not placed. Any idea
> what could that be?
>
> Cheers
> Jarek
>
>
>
>
>
>
> >From: "Donny MATEO"
> <donny.mateo@sg.ca-indosuez.com>
> >Reply-To: "Donny MATEO"
> <donny.mateo@sg.ca-indosuez.com>
> >To: "Szeto Jeff" <jytszeto@hotmail.com>
> >CC: ccielab@groupstudy.com, nobody@groupstudy.com
> >Subject: Re: 3550 root guard and loop guard
> >Date: Wed, 6 Nov 2002 18:02:27 +0800
> >
> >Root guard, is used to make sure the port will
> never become a root port. It
> >works in such as way
> >that if the spanning tree calculation result on the
> port with the root
> >guard configured selected as
> >the rootport (meaning a bpdu is received on this
> interface with higher
> >bridge ID), the port is put
> >in incosistent state (read as blocked), and the
> spanning tree will select
> >another port as the root
> >port.
> >
> >For loopguard, what it do is to make sure that your
> Root port and alternate
> >will never become a
> >Designated port for "other" switch.
> >So in other words, your switch will never be the
> switch in the root path
> >for others. Imagine if
> >you're on access switch and suddenly the uplink of
> the access switch became
> >the Designated port of
> >the distribution switch, something must be wrong.
> Use loopguard to prevent
> >this from happening.
> >
> >That is my understanding, perhaps other can give
> more.
> >Donny
> >
> >
> >
> > "Szeto Jeff"
> > <jytszeto@hotmail To:
>
> >ccielab@groupstudy.com
> > .com> cc:
> > Sent by:
> Subject: 3550 root guard
> >and loop guard
> > nobody@groupstudy
> > .com
> >
> >
> > 06-11-2002 16:45
> > Please respond to
> > "Szeto Jeff"
> >
> >
> >
> >
> >
> >
> >Hi Group,
> >
> >I am reading the config guide and do not clear
> about the root and loop
> >guard.
> >
> >Why root guard prevent the remote switch that
> connecting to the local
> >switch
> >from becoming the root?
> >The following, about the loop guard, is copied from
> the guide:
> >"You can use loop guard to prevent alternate or
> root ports from becoming
> >designated ports because of a failure that leads to
> a unidirectional link"
> >Actually, what the loop guard do?
> >
> >Thank you in advance.
> >
> >Jeff
> >
>
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>
This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:54 GMT-3