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??
> > > >
> > > >
> > > >SIN01#sh int s1/1.19
> > > >Serial1/1.19 is up, line protocol is up
> > > > Hardware is M4T
> > > > Description: --- Connects to JKT01 Ser0.2 ---
> > > > Internet address is 50.200.243.25/30
> > > > MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
> > > > reliability 255/255, txload 2/255, rxload 2/255
> > > > Encapsulation FRAME-RELAY IETF
> > >
> >
>_________________________________________________________________________
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> > >
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