Re: frame relay question [7:34090]
Another important factor is where the sites are located. congestion is most
prevelant in the
NNI's.
"McCallum, Robert" wrote:
> I have seen circuits built and have been working absolutely perfectly with
> 5:1 contention. For this scenario I would easily suggest a 2 or 3:1
> contention. Lets face it what are the chances of the three buildings
> loading 14 MB each at the same time??? I say nil
>
> -Original Message-
> From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
> Sent: 01 February 2002 19:34
> To: [EMAIL PROTECTED]
> Subject: Re: frame relay question [7:34090]
>
> Some telcos have some basic oversubscription requirements, designed more so
> that they can sell you more bandwidth than as a real practical requirement.
>
> Here in California, for example, the local telco permits no more than a 2
> for 1 oversubscription.
>
> So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum
> 2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example.
>
> I believe the reasoning is that the telco does not want a lot of calls
> complaining about their circuits when the problem is overutilization of
> bandwidth. And they want to sell you more, of course. ;->
>
> Chuck
>
> ""Patrick Ramsey"" wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > I usually use the 1 to 8 rule for every 8mb you think you need,
order
> 1
> >
> > Will each facility be pumping a solid 14mb across the wan all day long?
> >
> > If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> > circuits for the WAN... (15mb shape)
> >
> > -Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> > Hi,
> >
> > if there are one central site and three remote sites. all the remote
sites
> > need to connect to the central site. now I need to decide the access
> circuit
> > and port speed for the central site. the CIR requirement are following:
> >
> > Remote site A: 14M
> > Remote site B: 14M
> > Remote site C: 14M
> >
> > how many T3 access Circuits and ports are needed for the central sites?
> >
> > any advise is highly appreciated!
> >
> > yatou
> >
> >
> > _
> > Join the worlds largest e-mail service with MSN Hotmail.
> > http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality DisclaimerThis email and any files
> transmitted with it may contain confidential and
> > /or proprietary information in the possession of WellStar Health System,
> > Inc. ("WellStar") and is intended only for the individual or entity to
> whom
> > addressed. This email may contain information that is held to be
> > privileged, confidential and exempt from disclosure under applicable law.
> If
> > the reader of this message is not the intended recipient, you are hereby
> > notified that any unauthorized access, dissemination, distribution or
> > copying of any information from this email is strictly prohibited, and
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> > subject you to criminal and/or civil liability. If you have received this
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--
David Madland
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612-664-3367
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Re: frame relay question [7:34090]
each remote has two DLCI's - one to the first T3, one to the second. you use
load sharing to balance traffic across the links.
OR
a couple of folks have suggested muxing multiple T3's at your host site. In
the environment you describe, you should have no problem getting your telco
to work with you. doing so would eliminate the need for two pvc's from each
remote.
HTH
Chuck
""Yatou Wu"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> 14MB is the CIR and 28MB is the port speed. Normally we assume that the
port
> speed should be double of the CIR, which might not be right.
>
> for the remote site, if CIR is 14MB(actually what we can get is 15MB), the
> port speed we can get from the vendor is 45MB. so every remote site needs
a
> DS3 access circuit.
>
> the numbers here are all assumptions. but it presents a question I have.
for
> the central site, the aggregate port speed is less than 2 DS3, but how can
> you assign those DLSIs to the 2 DS3 access circuits?
>
>
> >From: "John Neiberger"
> >To: ,
> >Subject: Re: frame relay question [7:34090]
> >Date: Fri, 01 Feb 2002 12:35:54 -0700
> >
> >Where did you get 28MB from? In your original email you said that each
> >location needs 14 MB. Are you taking into account that the circuit is
> >full duplex and adding the input and output rates together? If so, that
> >is not necessary.
> >
> >If you have three remote sites with 15MB fractional DS3 frame relay
> >service (assuming you can get that from your provider) then you only
> >need a single DS3 at your central location, again assuming that your
> >provider offers a frame relay DS3.
> >
> >John
> >
> > >>> "Yatou Wu" 2/1/02 12:07:11 PM >>>
> >thanks for your reply. sorry that I didn't make my question clear.
> >
> >Actually what I want to know is that, if the port speed requirment to
> >every
> >remote site is 28mb, then the aggregate port speed requirement in
> >central
> >site would be 84mb. should I order 2 T3 access circuits or 3 at the
> >central
> >site? if 2, how can i config the 3 DLCI across the 2 T3 circuits?
> >because
> >there would be 1 DLCI needed to be split between the 2 T3 circuits.
> >
> >thanks again!
> >
> >Yatou
> >
> >
> > >From: "Patrick Ramsey"
> > >To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> > >Subject: Re: frame relay question [7:34090]
> > >Date: Fri, 01 Feb 2002 13:41:34 -0500
> > >
> > >I usually use the 1 to 8 rule for every 8mb you think you need,
> >order
> > >1
> > >
> > >Will each facility be pumping a solid 14mb across the wan all day
> >long?
> > >
> > >If so, one ds3 (45mb) will suffice at the HQthen purchase shaped
> >DS3
> > >circuits for the WAN... (15mb shape)
> > >
> > >-Patrick
> > >
> > > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> > >Hi,
> > >
> > >if there are one central site and three remote sites. all the remote
> >sites
> > >need to connect to the central site. now I need to decide the access
> > >circuit
> > >and port speed for the central site. the CIR requirement are
> >following:
> > >
> > >Remote site A: 14M
> > >Remote site B: 14M
> > >Remote site C: 14M
> > >
> > >how many T3 access Circuits and ports are needed for the central
> >sites?
> > >
> > >any advise is highly appreciated!
> > >
> > >yatou
> > >
> > >
> > >_
> > >Join the worlds largest e-mail service with MSN Hotmail.
> > >http://www.hotmail.com
> > > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
> >transmitted with it may contain confidential and
> > >/or proprietary information in the possession of WellStar Health
> >System,
> > >Inc. ("WellStar") and is intended only for the individual or entity to
> >whom
> > >addressed. This email may contain information that is held to be
> > >privileged, confidential and exempt from disclosure under applicable
> >law.
> > >If the reader of this message is not the intended recipient, you are
> >hereby
> > >notified that any unauthorized access, dissemination, distribution or
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> >ma
Re: frame relay question [7:34090]
thanks for your reply. would you please explain more? sorry for asking
because I am new to the networking field.
yatou
>From: "Patrick Ramsey"
>To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: Re: frame relay question [7:34090]
>Date: Fri, 01 Feb 2002 15:33:42 -0500
>
>well, if you really need 90mb, then the best thing to do would be to
>inverse mux on your end and have the telco muc them on yoru end... (2
>ds3's)
>
>then you would have a 90mb frame pipe to bring remote site into.
>
>-Patrick
>
> >>> "Yatou Wu" 02/01/02 02:08PM >>>
>thanks for your reply. sorry that I didn't make my question clear.
>
>Actually what I want to know is that, if the port speed requirment to every
>remote site is 28mb, then the aggregate port speed requirement in central
>site would be 84mb. should I order 2 T3 access circuits or 3 at the central
>site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because
>there would be 1 DLCI needed to be split between the 2 T3 circuits.
>
>thanks again!
>
>Yatou
>
>
> >From: "Patrick Ramsey"
> >To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >Subject: Re: frame relay question [7:34090]
> >Date: Fri, 01 Feb 2002 13:41:34 -0500
> >
> >I usually use the 1 to 8 rule for every 8mb you think you need,
>order
> >1
> >
> >Will each facility be pumping a solid 14mb across the wan all day long?
> >
> >If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> >circuits for the WAN... (15mb shape)
> >
> >-Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> >Hi,
> >
> >if there are one central site and three remote sites. all the remote
>sites
> >need to connect to the central site. now I need to decide the access
> >circuit
> >and port speed for the central site. the CIR requirement are following:
> >
> >Remote site A: 14M
> >Remote site B: 14M
> >Remote site C: 14M
> >
> >how many T3 access Circuits and ports are needed for the central sites?
> >
> >any advise is highly appreciated!
> >
> >yatou
> >
> >
> >_
> >Join the worlds largest e-mail service with MSN Hotmail.
> >http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality Disclaimer>This email and any files
transmitted with it may contain confidential and
> >/or proprietary information in the possession of WellStar Health System,
> >Inc. ("WellStar") and is intended only for the individual or entity to
>whom
> >addressed. This email may contain information that is held to be
> >privileged, confidential and exempt from disclosure under applicable law.
> >If the reader of this message is not the intended recipient, you are
>hereby
> >notified that any unauthorized access, dissemination, distribution or
> >copying of any information from this email is strictly prohibited, and
>may
> >subject you to criminal and/or civil liability. If you have received this
> >email in error, please notify the sender by reply email and then delete
> >this email and its attachments from your computer. Thank you.
> >
> >
> >
> >
> >
> >
>
>
>_
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>
>
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> >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
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>Inc. ("WellStar") and is intended only for the individual or entity to whom
>addressed. This email may contain information that is held to be
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Re: frame relay question [7:34090]
14MB is the CIR and 28MB is the port speed. Normally we assume that the port
speed should be double of the CIR, which might not be right.
for the remote site, if CIR is 14MB(actually what we can get is 15MB), the
port speed we can get from the vendor is 45MB. so every remote site needs a
DS3 access circuit.
the numbers here are all assumptions. but it presents a question I have. for
the central site, the aggregate port speed is less than 2 DS3, but how can
you assign those DLSIs to the 2 DS3 access circuits?
>From: "John Neiberger"
>To: ,
>Subject: Re: frame relay question [7:34090]
>Date: Fri, 01 Feb 2002 12:35:54 -0700
>
>Where did you get 28MB from? In your original email you said that each
>location needs 14 MB. Are you taking into account that the circuit is
>full duplex and adding the input and output rates together? If so, that
>is not necessary.
>
>If you have three remote sites with 15MB fractional DS3 frame relay
>service (assuming you can get that from your provider) then you only
>need a single DS3 at your central location, again assuming that your
>provider offers a frame relay DS3.
>
>John
>
> >>> "Yatou Wu" 2/1/02 12:07:11 PM >>>
>thanks for your reply. sorry that I didn't make my question clear.
>
>Actually what I want to know is that, if the port speed requirment to
>every
>remote site is 28mb, then the aggregate port speed requirement in
>central
>site would be 84mb. should I order 2 T3 access circuits or 3 at the
>central
>site? if 2, how can i config the 3 DLCI across the 2 T3 circuits?
>because
>there would be 1 DLCI needed to be split between the 2 T3 circuits.
>
>thanks again!
>
>Yatou
>
>
> >From: "Patrick Ramsey"
> >To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >Subject: Re: frame relay question [7:34090]
> >Date: Fri, 01 Feb 2002 13:41:34 -0500
> >
> >I usually use the 1 to 8 rule for every 8mb you think you need,
>order
> >1
> >
> >Will each facility be pumping a solid 14mb across the wan all day
>long?
> >
> >If so, one ds3 (45mb) will suffice at the HQthen purchase shaped
>DS3
> >circuits for the WAN... (15mb shape)
> >
> >-Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> >Hi,
> >
> >if there are one central site and three remote sites. all the remote
>sites
> >need to connect to the central site. now I need to decide the access
> >circuit
> >and port speed for the central site. the CIR requirement are
>following:
> >
> >Remote site A: 14M
> >Remote site B: 14M
> >Remote site C: 14M
> >
> >how many T3 access Circuits and ports are needed for the central
>sites?
> >
> >any advise is highly appreciated!
> >
> >yatou
> >
> >
> >_
> >Join the worlds largest e-mail service with MSN Hotmail.
> >http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
>transmitted with it may contain confidential and
> >/or proprietary information in the possession of WellStar Health
>System,
> >Inc. ("WellStar") and is intended only for the individual or entity to
>whom
> >addressed. This email may contain information that is held to be
> >privileged, confidential and exempt from disclosure under applicable
>law.
> >If the reader of this message is not the intended recipient, you are
>hereby
> >notified that any unauthorized access, dissemination, distribution or
>
> >copying of any information from this email is strictly prohibited, and
>may
> >subject you to criminal and/or civil liability. If you have received
>this
> >email in error, please notify the sender by reply email and then
>delete
> >this email and its attachments from your computer. Thank you.
> >
> >
> >
> >
> >
> >
>
>
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Re: frame relay question [7:34090]
of course it's fine to oversubscribe like that ( except maybe in a busy VoIP
environment )
but that doesn't help the telco bottom line ;->
Chuck
""McCallum, Robert"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I have seen circuits built and have been working absolutely perfectly with
> 5:1 contention. For this scenario I would easily suggest a 2 or 3:1
> contention. Lets face it what are the chances of the three buildings
> loading 14 MB each at the same time??? I say nil
>
> -Original Message-
> From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
> Sent: 01 February 2002 19:34
> To: [EMAIL PROTECTED]
> Subject: Re: frame relay question [7:34090]
>
>
> Some telcos have some basic oversubscription requirements, designed more
so
> that they can sell you more bandwidth than as a real practical
requirement.
>
> Here in California, for example, the local telco permits no more than a 2
> for 1 oversubscription.
>
> So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum
> 2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example.
>
> I believe the reasoning is that the telco does not want a lot of calls
> complaining about their circuits when the problem is overutilization of
> bandwidth. And they want to sell you more, of course. ;->
>
> Chuck
>
>
> ""Patrick Ramsey"" wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > I usually use the 1 to 8 rule for every 8mb you think you need,
order
> 1
> >
> > Will each facility be pumping a solid 14mb across the wan all day long?
> >
> > If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> > circuits for the WAN... (15mb shape)
> >
> > -Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> > Hi,
> >
> > if there are one central site and three remote sites. all the remote
sites
> > need to connect to the central site. now I need to decide the access
> circuit
> > and port speed for the central site. the CIR requirement are following:
> >
> > Remote site A: 14M
> > Remote site B: 14M
> > Remote site C: 14M
> >
> > how many T3 access Circuits and ports are needed for the central sites?
> >
> > any advise is highly appreciated!
> >
> > yatou
> >
> >
> > _
> > Join the worlds largest e-mail service with MSN Hotmail.
> > http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality DisclaimerThis email and any files
> transmitted with it may contain confidential and
> > /or proprietary information in the possession of WellStar Health System,
> > Inc. ("WellStar") and is intended only for the individual or entity to
> whom
> > addressed. This email may contain information that is held to be
> > privileged, confidential and exempt from disclosure under applicable
law.
> If
> > the reader of this message is not the intended recipient, you are hereby
> > notified that any unauthorized access, dissemination, distribution or
> > copying of any information from this email is strictly prohibited, and
may
> > subject you to criminal and/or civil liability. If you have received
this
> > email in error, please notify the sender by reply email and then delete
> this
> > email and its attachments from your computer. Thank you.
> >
> >
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Re: frame relay question [7:34090]
ouch!
we have no such restrictions here in Atlanta! :)
>>> "Chuck Larrieu" 02/01/02 02:34PM >>>
Some telcos have some basic oversubscription requirements, designed more so
that they can sell you more bandwidth than as a real practical requirement.
Here in California, for example, the local telco permits no more than a 2
for 1 oversubscription.
So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum
2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example.
I believe the reasoning is that the telco does not want a lot of calls
complaining about their circuits when the problem is overutilization of
bandwidth. And they want to sell you more, of course. ;->
Chuck
""Patrick Ramsey"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I usually use the 1 to 8 rule for every 8mb you think you need, order
1
>
> Will each facility be pumping a solid 14mb across the wan all day long?
>
> If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> circuits for the WAN... (15mb shape)
>
> -Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
> Hi,
>
> if there are one central site and three remote sites. all the remote sites
> need to connect to the central site. now I need to decide the access
circuit
> and port speed for the central site. the CIR requirement are following:
>
> Remote site A: 14M
> Remote site B: 14M
> Remote site C: 14M
>
> how many T3 access Circuits and ports are needed for the central sites?
>
> any advise is highly appreciated!
>
> yatou
>
>
> _
> Join the worlds largest e-mail service with MSN Hotmail.
> http://www.hotmail.com
> > Confidentiality DisclaimerThis email and any files
transmitted with it may contain confidential and
> /or proprietary information in the possession of WellStar Health System,
> Inc. ("WellStar") and is intended only for the individual or entity to
whom
> addressed. This email may contain information that is held to be
> privileged, confidential and exempt from disclosure under applicable law.
If
> the reader of this message is not the intended recipient, you are hereby
> notified that any unauthorized access, dissemination, distribution or
> copying of any information from this email is strictly prohibited, and may
> subject you to criminal and/or civil liability. If you have received this
> email in error, please notify the sender by reply email and then delete
this
> email and its attachments from your computer. Thank you.
>
>
> Confidentiality Disclaimer
This email and any files transmitted with it may contain confidential and
/or proprietary information in the possession of WellStar Health System,
Inc. ("WellStar") and is intended only for the individual or entity to whom
addressed. This email may contain information that is held to be
privileged, confidential and exempt from disclosure under applicable law. If
the reader of this message is not the intended recipient, you are hereby
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Re: frame relay question [7:34090]
well, if you really need 90mb, then the best thing to do would be to inverse
mux on your end and have the telco muc them on yoru end... (2 ds3's)
then you would have a 90mb frame pipe to bring remote site into.
-Patrick
>>> "Yatou Wu" 02/01/02 02:08PM >>>
thanks for your reply. sorry that I didn't make my question clear.
Actually what I want to know is that, if the port speed requirment to every
remote site is 28mb, then the aggregate port speed requirement in central
site would be 84mb. should I order 2 T3 access circuits or 3 at the central
site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because
there would be 1 DLCI needed to be split between the 2 T3 circuits.
thanks again!
Yatou
>From: "Patrick Ramsey"
>To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: Re: frame relay question [7:34090]
>Date: Fri, 01 Feb 2002 13:41:34 -0500
>
>I usually use the 1 to 8 rule for every 8mb you think you need, order
>1
>
>Will each facility be pumping a solid 14mb across the wan all day long?
>
>If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
>circuits for the WAN... (15mb shape)
>
>-Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
>Hi,
>
>if there are one central site and three remote sites. all the remote sites
>need to connect to the central site. now I need to decide the access
>circuit
>and port speed for the central site. the CIR requirement are following:
>
>Remote site A: 14M
>Remote site B: 14M
>Remote site C: 14M
>
>how many T3 access Circuits and ports are needed for the central sites?
>
>any advise is highly appreciated!
>
>yatou
>
>
>_
>Join the worlds largest e-mail service with MSN Hotmail.
>http://www.hotmail.com
> >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
transmitted with it may contain confidential and
>/or proprietary information in the possession of WellStar Health System,
>Inc. ("WellStar") and is intended only for the individual or entity to whom
>addressed. This email may contain information that is held to be
>privileged, confidential and exempt from disclosure under applicable law.
>If the reader of this message is not the intended recipient, you are hereby
>notified that any unauthorized access, dissemination, distribution or
>copying of any information from this email is strictly prohibited, and may
>subject you to criminal and/or civil liability. If you have received this
>email in error, please notify the sender by reply email and then delete
>this email and its attachments from your computer. Thank you.
>
>
>
>
>
>
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RE: frame relay question [7:34090]
In order to accomodate your needs you could
have each remote site have a pvc built over
each of the T3s. This removes the need or
worry over the physical circuit.
How about using a carrier that can do frame relay
at the ends and IP or ATM in the middle??
At the remote ends how do you plan to get that
much traffic out? The best bet would be a T3
at the remote sites too.
-Original Message-
From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 01, 2002 2:26 PM
To: [EMAIL PROTECTED]
Subject: Re: frame relay question [7:34090]
Is ATM a consideration? I believe you can get up to OC12 speeds with ATM,
and you can use FRATM ( frame to ATM ) to connect your remotes. Assuming
your telco can support you there, you would have the best of both worlds, so
to speak.
HTH
Chuck
""Yatou Wu"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> thanks for your reply. sorry that I didn't make my question clear.
>
> Actually what I want to know is that, if the port speed requirment to
every
> remote site is 28mb, then the aggregate port speed requirement in central
> site would be 84mb. should I order 2 T3 access circuits or 3 at the
central
> site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because
> there would be 1 DLCI needed to be split between the 2 T3 circuits.
>
> thanks again!
>
> Yatou
>
>
> >From: "Patrick Ramsey"
> >To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >Subject: Re: frame relay question [7:34090]
> >Date: Fri, 01 Feb 2002 13:41:34 -0500
> >
> >I usually use the 1 to 8 rule for every 8mb you think you need,
order
> >1
> >
> >Will each facility be pumping a solid 14mb across the wan all day long?
> >
> >If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> >circuits for the WAN... (15mb shape)
> >
> >-Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> >Hi,
> >
> >if there are one central site and three remote sites. all the remote
sites
> >need to connect to the central site. now I need to decide the access
> >circuit
> >and port speed for the central site. the CIR requirement are following:
> >
> >Remote site A: 14M
> >Remote site B: 14M
> >Remote site C: 14M
> >
> >how many T3 access Circuits and ports are needed for the central sites?
> >
> >any advise is highly appreciated!
> >
> >yatou
> >
> >
> >_
> >Join the worlds largest e-mail service with MSN Hotmail.
> >http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
> transmitted with it may contain confidential and
> >/or proprietary information in the possession of WellStar Health System,
> >Inc. ("WellStar") and is intended only for the individual or entity to
whom
> >addressed. This email may contain information that is held to be
> >privileged, confidential and exempt from disclosure under applicable law.
> >If the reader of this message is not the intended recipient, you are
hereby
> >notified that any unauthorized access, dissemination, distribution or
> >copying of any information from this email is strictly prohibited, and
may
> >subject you to criminal and/or civil liability. If you have received this
> >email in error, please notify the sender by reply email and then delete
> >this email and its attachments from your computer. Thank you.
> >
> >
> >
> >
> >
> >
>
>
> _
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RE: frame relay question [7:34090]
I have seen circuits built and have been working absolutely perfectly with
5:1 contention. For this scenario I would easily suggest a 2 or 3:1
contention. Lets face it what are the chances of the three buildings
loading 14 MB each at the same time??? I say nil
-Original Message-
From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
Sent: 01 February 2002 19:34
To: [EMAIL PROTECTED]
Subject: Re: frame relay question [7:34090]
Some telcos have some basic oversubscription requirements, designed more so
that they can sell you more bandwidth than as a real practical requirement.
Here in California, for example, the local telco permits no more than a 2
for 1 oversubscription.
So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum
2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example.
I believe the reasoning is that the telco does not want a lot of calls
complaining about their circuits when the problem is overutilization of
bandwidth. And they want to sell you more, of course. ;->
Chuck
""Patrick Ramsey"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I usually use the 1 to 8 rule for every 8mb you think you need, order
1
>
> Will each facility be pumping a solid 14mb across the wan all day long?
>
> If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> circuits for the WAN... (15mb shape)
>
> -Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
> Hi,
>
> if there are one central site and three remote sites. all the remote sites
> need to connect to the central site. now I need to decide the access
circuit
> and port speed for the central site. the CIR requirement are following:
>
> Remote site A: 14M
> Remote site B: 14M
> Remote site C: 14M
>
> how many T3 access Circuits and ports are needed for the central sites?
>
> any advise is highly appreciated!
>
> yatou
>
>
> _
> Join the worlds largest e-mail service with MSN Hotmail.
> http://www.hotmail.com
> >>>>>>>>>>>>> Confidentiality DisclaimerThis email and any files
transmitted with it may contain confidential and
> /or proprietary information in the possession of WellStar Health System,
> Inc. ("WellStar") and is intended only for the individual or entity to
whom
> addressed. This email may contain information that is held to be
> privileged, confidential and exempt from disclosure under applicable law.
If
> the reader of this message is not the intended recipient, you are hereby
> notified that any unauthorized access, dissemination, distribution or
> copying of any information from this email is strictly prohibited, and may
> subject you to criminal and/or civil liability. If you have received this
> email in error, please notify the sender by reply email and then delete
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Re: frame relay question [7:34090]
The bandwidth on the hub router's frame interface in a pure multipoint topology should be the CIR x the number of PVC's. ""Yatou Wu"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > if there are one central site and three remote sites. all the remote sites > need to connect to the central site. now I need to decide the access circuit > and port speed for the central site. the CIR requirement are following: > > Remote site A: 14M > Remote site B: 14M > Remote site C: 14M > > how many T3 access Circuits and ports are needed for the central sites? > > any advise is highly appreciated! > > yatou > > > _ > Join the worlds largest e-mail service with MSN Hotmail. > http://www.hotmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34109&t=34090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: frame relay question [7:34090]
Where did you get 28MB from? In your original email you said that each
location needs 14 MB. Are you taking into account that the circuit is
full duplex and adding the input and output rates together? If so, that
is not necessary.
If you have three remote sites with 15MB fractional DS3 frame relay
service (assuming you can get that from your provider) then you only
need a single DS3 at your central location, again assuming that your
provider offers a frame relay DS3.
John
>>> "Yatou Wu" 2/1/02 12:07:11 PM >>>
thanks for your reply. sorry that I didn't make my question clear.
Actually what I want to know is that, if the port speed requirment to
every
remote site is 28mb, then the aggregate port speed requirement in
central
site would be 84mb. should I order 2 T3 access circuits or 3 at the
central
site? if 2, how can i config the 3 DLCI across the 2 T3 circuits?
because
there would be 1 DLCI needed to be split between the 2 T3 circuits.
thanks again!
Yatou
>From: "Patrick Ramsey"
>To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: Re: frame relay question [7:34090]
>Date: Fri, 01 Feb 2002 13:41:34 -0500
>
>I usually use the 1 to 8 rule for every 8mb you think you need,
order
>1
>
>Will each facility be pumping a solid 14mb across the wan all day
long?
>
>If so, one ds3 (45mb) will suffice at the HQthen purchase shaped
DS3
>circuits for the WAN... (15mb shape)
>
>-Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
>Hi,
>
>if there are one central site and three remote sites. all the remote
sites
>need to connect to the central site. now I need to decide the access
>circuit
>and port speed for the central site. the CIR requirement are
following:
>
>Remote site A: 14M
>Remote site B: 14M
>Remote site C: 14M
>
>how many T3 access Circuits and ports are needed for the central
sites?
>
>any advise is highly appreciated!
>
>yatou
>
>
>_
>Join the worlds largest e-mail service with MSN Hotmail.
>http://www.hotmail.com
> >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
transmitted with it may contain confidential and
>/or proprietary information in the possession of WellStar Health
System,
>Inc. ("WellStar") and is intended only for the individual or entity to
whom
>addressed. This email may contain information that is held to be
>privileged, confidential and exempt from disclosure under applicable
law.
>If the reader of this message is not the intended recipient, you are
hereby
>notified that any unauthorized access, dissemination, distribution or
>copying of any information from this email is strictly prohibited, and
may
>subject you to criminal and/or civil liability. If you have received
this
>email in error, please notify the sender by reply email and then
delete
>this email and its attachments from your computer. Thank you.
>
>
>
>
>
>
_
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Re: frame relay question [7:34090]
Some telcos have some basic oversubscription requirements, designed more so
that they can sell you more bandwidth than as a real practical requirement.
Here in California, for example, the local telco permits no more than a 2
for 1 oversubscription.
So if you have 20 spokes, each at 256K CIR, then you MUST have a minimum
2.56 megabit CIR at your center ( fractional DS3 or ATM ), for example.
I believe the reasoning is that the telco does not want a lot of calls
complaining about their circuits when the problem is overutilization of
bandwidth. And they want to sell you more, of course. ;->
Chuck
""Patrick Ramsey"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I usually use the 1 to 8 rule for every 8mb you think you need, order
1
>
> Will each facility be pumping a solid 14mb across the wan all day long?
>
> If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> circuits for the WAN... (15mb shape)
>
> -Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
> Hi,
>
> if there are one central site and three remote sites. all the remote sites
> need to connect to the central site. now I need to decide the access
circuit
> and port speed for the central site. the CIR requirement are following:
>
> Remote site A: 14M
> Remote site B: 14M
> Remote site C: 14M
>
> how many T3 access Circuits and ports are needed for the central sites?
>
> any advise is highly appreciated!
>
> yatou
>
>
> _
> Join the worlds largest e-mail service with MSN Hotmail.
> http://www.hotmail.com
> > Confidentiality DisclaimerThis email and any files
transmitted with it may contain confidential and
> /or proprietary information in the possession of WellStar Health System,
> Inc. ("WellStar") and is intended only for the individual or entity to
whom
> addressed. This email may contain information that is held to be
> privileged, confidential and exempt from disclosure under applicable law.
If
> the reader of this message is not the intended recipient, you are hereby
> notified that any unauthorized access, dissemination, distribution or
> copying of any information from this email is strictly prohibited, and may
> subject you to criminal and/or civil liability. If you have received this
> email in error, please notify the sender by reply email and then delete
this
> email and its attachments from your computer. Thank you.
>
>
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Re: frame relay question [7:34090]
In some parts of the world, one can get up to 45 mbs ( T3 ) frame support. YMMV. Chuck ""Stull, Cory"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Usually frame-relay is only used up to T1 speeds and you would want your > central location to have the aggregate amount of all three remote sites. > > -Original Message- > From: Yatou Wu [mailto:[EMAIL PROTECTED]] > Sent: Friday, February 01, 2002 12:21 PM > To: [EMAIL PROTECTED] > Subject: frame relay question [7:34090] > > > Hi, > > if there are one central site and three remote sites. all the remote sites > need to connect to the central site. now I need to decide the access circuit > > and port speed for the central site. the CIR requirement are following: > > Remote site A: 14M > Remote site B: 14M > Remote site C: 14M > > how many T3 access Circuits and ports are needed for the central sites? > > any advise is highly appreciated! > > yatou > > > _ > Join the worlds largest e-mail service with MSN Hotmail. > http://www.hotmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34105&t=34090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: frame relay question [7:34090]
Is ATM a consideration? I believe you can get up to OC12 speeds with ATM,
and you can use FRATM ( frame to ATM ) to connect your remotes. Assuming
your telco can support you there, you would have the best of both worlds, so
to speak.
HTH
Chuck
""Yatou Wu"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> thanks for your reply. sorry that I didn't make my question clear.
>
> Actually what I want to know is that, if the port speed requirment to
every
> remote site is 28mb, then the aggregate port speed requirement in central
> site would be 84mb. should I order 2 T3 access circuits or 3 at the
central
> site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because
> there would be 1 DLCI needed to be split between the 2 T3 circuits.
>
> thanks again!
>
> Yatou
>
>
> >From: "Patrick Ramsey"
> >To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> >Subject: Re: frame relay question [7:34090]
> >Date: Fri, 01 Feb 2002 13:41:34 -0500
> >
> >I usually use the 1 to 8 rule for every 8mb you think you need,
order
> >1
> >
> >Will each facility be pumping a solid 14mb across the wan all day long?
> >
> >If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
> >circuits for the WAN... (15mb shape)
> >
> >-Patrick
> >
> > >>> "Yatou Wu" 02/01/02 01:20PM >>>
> >Hi,
> >
> >if there are one central site and three remote sites. all the remote
sites
> >need to connect to the central site. now I need to decide the access
> >circuit
> >and port speed for the central site. the CIR requirement are following:
> >
> >Remote site A: 14M
> >Remote site B: 14M
> >Remote site C: 14M
> >
> >how many T3 access Circuits and ports are needed for the central sites?
> >
> >any advise is highly appreciated!
> >
> >yatou
> >
> >
> >_
> >Join the worlds largest e-mail service with MSN Hotmail.
> >http://www.hotmail.com
> > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
> transmitted with it may contain confidential and
> >/or proprietary information in the possession of WellStar Health System,
> >Inc. ("WellStar") and is intended only for the individual or entity to
whom
> >addressed. This email may contain information that is held to be
> >privileged, confidential and exempt from disclosure under applicable law.
> >If the reader of this message is not the intended recipient, you are
hereby
> >notified that any unauthorized access, dissemination, distribution or
> >copying of any information from this email is strictly prohibited, and
may
> >subject you to criminal and/or civil liability. If you have received this
> >email in error, please notify the sender by reply email and then delete
> >this email and its attachments from your computer. Thank you.
> >
> >
> >
> >
> >
> >
>
>
> _
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Re: frame relay question [7:34090]
thanks for your reply. sorry that I didn't make my question clear.
Actually what I want to know is that, if the port speed requirment to every
remote site is 28mb, then the aggregate port speed requirement in central
site would be 84mb. should I order 2 T3 access circuits or 3 at the central
site? if 2, how can i config the 3 DLCI across the 2 T3 circuits? because
there would be 1 DLCI needed to be split between the 2 T3 circuits.
thanks again!
Yatou
>From: "Patrick Ramsey"
>To: [EMAIL PROTECTED], [EMAIL PROTECTED]
>Subject: Re: frame relay question [7:34090]
>Date: Fri, 01 Feb 2002 13:41:34 -0500
>
>I usually use the 1 to 8 rule for every 8mb you think you need, order
>1
>
>Will each facility be pumping a solid 14mb across the wan all day long?
>
>If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
>circuits for the WAN... (15mb shape)
>
>-Patrick
>
> >>> "Yatou Wu" 02/01/02 01:20PM >>>
>Hi,
>
>if there are one central site and three remote sites. all the remote sites
>need to connect to the central site. now I need to decide the access
>circuit
>and port speed for the central site. the CIR requirement are following:
>
>Remote site A: 14M
>Remote site B: 14M
>Remote site C: 14M
>
>how many T3 access Circuits and ports are needed for the central sites?
>
>any advise is highly appreciated!
>
>yatou
>
>
>_
>Join the worlds largest e-mail service with MSN Hotmail.
>http://www.hotmail.com
> >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files
transmitted with it may contain confidential and
>/or proprietary information in the possession of WellStar Health System,
>Inc. ("WellStar") and is intended only for the individual or entity to whom
>addressed. This email may contain information that is held to be
>privileged, confidential and exempt from disclosure under applicable law.
>If the reader of this message is not the intended recipient, you are hereby
>notified that any unauthorized access, dissemination, distribution or
>copying of any information from this email is strictly prohibited, and may
>subject you to criminal and/or civil liability. If you have received this
>email in error, please notify the sender by reply email and then delete
>this email and its attachments from your computer. Thank you.
>
>
>
>
>
>
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RE: frame relay question [7:34090]
Usually frame-relay is only used up to T1 speeds and you would want your central location to have the aggregate amount of all three remote sites. -Original Message- From: Yatou Wu [mailto:[EMAIL PROTECTED]] Sent: Friday, February 01, 2002 12:21 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:34090] Hi, if there are one central site and three remote sites. all the remote sites need to connect to the central site. now I need to decide the access circuit and port speed for the central site. the CIR requirement are following: Remote site A: 14M Remote site B: 14M Remote site C: 14M how many T3 access Circuits and ports are needed for the central sites? any advise is highly appreciated! yatou _ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34097&t=34090 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: frame relay question [7:34090]
I usually use the 1 to 8 rule for every 8mb you think you need, order 1
Will each facility be pumping a solid 14mb across the wan all day long?
If so, one ds3 (45mb) will suffice at the HQthen purchase shaped DS3
circuits for the WAN... (15mb shape)
-Patrick
>>> "Yatou Wu" 02/01/02 01:20PM >>>
Hi,
if there are one central site and three remote sites. all the remote sites
need to connect to the central site. now I need to decide the access circuit
and port speed for the central site. the CIR requirement are following:
Remote site A: 14M
Remote site B: 14M
Remote site C: 14M
how many T3 access Circuits and ports are needed for the central sites?
any advise is highly appreciated!
yatou
_
Join the worlds largest e-mail service with MSN Hotmail.
http://www.hotmail.com
> Confidentiality Disclaimer
This email and any files transmitted with it may contain confidential and
/or proprietary information in the possession of WellStar Health System,
Inc. ("WellStar") and is intended only for the individual or entity to whom
addressed. This email may contain information that is held to be
privileged, confidential and exempt from disclosure under applicable law. If
the reader of this message is not the intended recipient, you are hereby
notified that any unauthorized access, dissemination, distribution or
copying of any information from this email is strictly prohibited, and may
subject you to criminal and/or civil liability. If you have received this
email in error, please notify the sender by reply email and then delete this
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