From owner-nanog@merit.edu Sat Apr 25 15:14:14 1998 Received: from localhost (daemon@localhost) by merit.edu (8.8.7/8.8.5) with SMTP id SAA20768; Sat, 25 Apr 1998 18:05:57 -0400 (EDT) Received: by merit.edu (bulk_mailer v1.5); Sat, 25 Apr 1998 18:05:28 -0400 Received: (from majordom@localhost) by merit.edu (8.8.7/8.8.5) id SAA20729 for nanog-outgoing; Sat, 25 Apr 1998 18:05:27 -0400 (EDT) Received: from freeside.fc.net (freeside.fc.net [207.170.70.2]) by merit.edu (8.8.7/8.8.5) with ESMTP id SAA20725 for <nanog@merit.edu>; Sat, 25 Apr 1998 18:05:21 -0400 (EDT) Received: from freeside.fc.net (localhost.fc.net [127.0.0.1]) by freeside.fc.net (8.8.8/8.8.8) with ESMTP id RAA21337; Sat, 25 Apr 1998 17:05:16 -0500 (CDT) Message-Id: <199804252205.RAA21337@freeside.fc.net> To: "Ehab Hadi" <ehabh@hotmail.com> cc: no@frontier.net, nanog@merit.edu Subject: Re: Traffic Shapping In-reply-to: Your message of "Sat, 25 Apr 1998 01:03:28 EDT." <19980425050329.10670.qmail@hotmail.com> Date: Sat, 25 Apr 1998 17:05:16 -0500 From: Jeremy Porter <jerry@freeside.fc.net> Sender: owner-nanog@merit.edu
Traffic shaping in the core of a network won't scale. "enterprise" or
networks haven't got much life left in them. (This is Nanog right?) We use 2500 series ciscos for traffic shaping at T-1 and below, but
What I meant to shape on the core: Is traffic aggregation. This is why most vendors trying to propose different solutions hence to scale core, e.g., proposed IETF MPLS. Regarding the shaping issue on the Cisco Ethernet is not appreciated while the shaping preferred to be provisioned at the outboand interface. I would like also to add Cisco has powerful tools must be studied well before installing third party solution. I agree that traffic patterns must be studied well to evaluate what approach that must be followed. Ehab H. Hadi Northern Telecom Ottawa, ON ehabh@hotmail.com private that
isn't terribly related to nanog either. One just has to look at exchange point data to see what traffic volumes are like, I don't know of anything that can switch VC near 2gbps/sec particuarlly with the flow life times of Internet traffic. It's much cheaper to shape/filter at the borders and overengineer the core. It also increases usefull lifetime of hardware. (No forklift upgrades).
In message <19980425050329.10670.qmail@hotmail.com>, "Ehab Hadi" writes:
I think traffic shaping is very importent. I agree to the point that the new traffic shaping approches tends to shape on near the edges, but that would not prevent applying such approches in the core especially if its an interprise net. The shapping implemintation preferred to be implemented in switch because the hardware is simply fast and efficient. Jeremy, Would you please specify what kind of Cisco platform that you are using?
Ehab Hadi Northern Telecom. Interprise Networking Ottawa, Ontario K1Y 4H7 Canada
From owner-nanog@merit.edu Fri Apr 24 09:39:40 1998 Received: from localhost (daemon@localhost) by merit.edu (8.8.7/8.8.5) with SMTP id MAA26391; Fri, 24 Apr 1998 12:27:05 -0400 (EDT) Received: by merit.edu (bulk_mailer v1.5); Fri, 24 Apr 1998 12:25:12 -0400 Received: (from majordom@localhost) by merit.edu (8.8.7/8.8.5) id MAA26259 for nanog-outgoing; Fri, 24 Apr 1998 12:25:11 -0400 (EDT) Received: from freeside.fc.net (freeside.fc.net [207.170.70.2]) by merit.edu (8.8.7/8.8.5) with ESMTP id MAA26217 for <nanog@merit.edu>; Fri, 24 Apr 1998 12:24:37 -0400 (EDT) Received: from freeside.fc.net (localhost.fc.net [127.0.0.1]) by freeside.fc.net (8.8.8/8.8.8) with ESMTP id LAA14282; Fri, 24 Apr 1998 11:24:30 -0500 (CDT) Message-Id: <199804241624.LAA14282@freeside.fc.net> To: "Natambu Obleton" <no@frontier.net> cc: nanog@merit.edu Subject: Re: Traffic Shapping In-reply-to: Your message of "Thu, 23 Apr 1998 17:51:16 MDT." <072601bd6f12$b4f15050$3b8d2dc7@hermosa.frontier.net> Date: Fri, 24 Apr 1998 11:24:29 -0500 From: Jeremy Porter <jerry@freeside.fc.net> Sender: owner-nanog@merit.edu
Sure we do it all the time. There are CPU limitations on the amount of total traffic that can be pushed through a router that is traffic shaping. I'm assuming because all the shaped traffic is process switched. Also you will probably want to dedicate a router to it.
Typically these are only useful near the customer connection, as you can really only shape outbound packets. (unless you traffic shape at your boarders, and have a "large" network, you've already paid for the traffic by the time you discard it.)
In message <072601bd6f12$b4f15050$3b8d2dc7@hermosa.frontier.net>, "Natambu Oble ton" writes:
Has anyone here successfully implement the traffic shaping option on a Cisco router? -- Natambu Obleton - Network Administrator - Frontier Internet Inc. 970 385 4177 - fax: 970 385 6745 - http://www.frontier.net 777 Main St. - Suite #201 - Durango - Colorado - 81301 - USA
--- Jeremy Porter, Freeside Communications, Inc. jerry@fc.net PO BOX 80315 Austin, Tx 78708 | 512-458-9810 http://www.fc.net
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--- Jeremy Porter, Freeside Communications, Inc. jerry@fc.net PO BOX 80315 Austin, Tx 78708 | 512-458-9810 http://www.fc.net
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Ehab Hadi