here is my 2cent,
i was not going to jump into any conversation but
i felt that it was necessay to support
"EA Louie"
you do not or can not control how much router is
putting info on the wire through interface by
manipulating "bandwidth" statement.
it has nothing to do with admin distance or how much
data is transmitted.
but it has to do with calculation of metric.
for instance eigrp
will calculate and use upto 50% of the bandwidth for
eigrp purpose. so if you have a circuit with cir of
15kbps and no bandwidth statement to tell the eigrp
of the true available bandwidth, you will saturate the
link with eigrp update, query, reply. and that is
when you will be on fire to troubleshoot the problem.
go "EA Louie"
***************************************
The only function that the bandwidth statement
performs is the election of
administrative cost in routing protocols. It will
also set the bandwidth
for the circuit in SNMP monitoring.
Kelly D Griffin, CCNA, CCDA
Network Engineer
Kg2 Network Design
http://www.kg2.com
----- Original Message -----
From: "Stephen Skinner"
To:
Sent: Wednesday, April 11, 2001 5:01 AM
Subject: Re: How to determine CIR and increase CIR of
FR? [7:203]
> i don`t mean to be rude ,but i was essential
correct..
>
> if you set the bandwidth command to 64k and you have
a CIR of 128K yo
will
> only get 64K...But as my good friends have pointed
out the default is
> 1.544kb......but i was just trying to make that
point stand out that it`s
> the serivce provider who makes the call about the
info rate...
>
> I`m sorry if i`m bieng ANAL about this i just wanted
myself to be clear..
>
> best regards
>
> steve
>
>
> >From: "EA Louie"
> >Reply-To: "EA Louie"
> >To:
> >Subject: Re: How to determine CIR and increase CIR
of FR?
> >Date: Mon, 9 Apr 2001 08:16:49 -0700
> >
> >ohhh no.... the bandwidth statement in the
interface is *manually*
entered
> >(defaulted at 1544 Kbit for a serial interface),
and is used to
calculate:
> >1. metrics for routing protocols, and
> >2. bandwidth utilization in the "show interfaces"
display
> >so it's important to have it set correctly.
> >
> >Some frame relay carriers (Sprint and PacBell come
to mind) do not
transmit
> >their CIR, so 'show frame-relay map' doesn't
display their CIR.
> >
> >The frame relay provider does need to be contacted
to increase CIR.
Higher
> >CIR usually translates into a cost increase for the
circuit.
> >
> >Here's an explanation of EIR - also see
>
>http://www.nwfusion.com/newsletters/frame/1108fr2.html
and
>
>http://www.nwfusion.com/newsletters/frame/1206fr1.html
> >
> >EIR is the difference between the port speed of the
frame relay service
and
> >the CIR. The port speed is set by the frame relay
service provider, and
> >may
> >be lower than the maximum interface speed - for
example, on a T-1
circuit,
> >the provider could provide a 384kbps port and a
128k CIR. In this case,
> >the
> >EIR = 256k, and it would be wise to set the
interface bandwidth to 384k
> >(bandwidth 384 on the serial interface) to match
the port speed. And
the
> >port speed is usually the maximum rate at which one
can oversubscribe
the
> >PVC (that is, it is usually the frame relay burst
rate)
> >
> >The moral of the story - just because there is an
*access circuit* at a
> >particular transmission rate does not assure you
that you burst at that
> >rate. The interface is rate-limited to the port
speed that was ordered
> >from
> >the frame relay carrier.
> >
> >-e-
> >----- Original Message -----
> >From:
> >To: Greg Owens
> >Cc: ;
> >Sent: Monday, April 09, 2001 6:55 AM
> >Subject: Re: RE: How to determine CIR and increase
CIR of FR?
> >
> >
> > > Are you sure that information isn't just taken
from the "bandwidth"
> >statements on the subinterfaces?
> > >
> > >
> > > Greg Owens wrote:
> > > > Sh frame map will show u the CIR
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf
Of
> > > Stephen Skinner
> > > Sent: Monday, April 09, 2001 7:45 AM
> > > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> > > Subject: Re: How to determine CIR and increase
CIR of FR?
> > >
> > > your CIR (Committed information rate) is
supplied by your SP ...you
and
> >him
> > > agree how much you can have( depending on how
much you pay)
> > > usually ....the person setting up your router
sets the "BANDWIDTH"
> >command
> > > to the CIR+ BR (burst rate) I.E how high you CAN
go up to for a
limited
> > > amount of time ......again your service provider
has set this for you
> >.....
> > >
> > > HTH
> > >
> > > steve
> > >
> > >
> > > >From: "David Gollop"
> > > >Reply-To: "David Gollop"
> > > >To: [EMAIL PROTECTED]
> > > >Subject: How to determine CIR and increase CIR
of FR?
> > > >Date: Mon, 09 Apr 2001 10:29:40 -0000
> > > >
> > > >Hi.. How to determine the CIR of a frame relay
line? Like Result
> >shown
> > > >below, what is the CIR? How do I increase the
CIR? Do we have to
> >contact
> > > >the Frame relay provider? What is the
difference between CIR and
EIR??
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