From: Packet Man (ccie2b@hotmail.com)
Date: Tue Jan 27 2004 - 14:19:57 GMT-3
Thank you. I thought the solution wasn't correct but I tend to assume that
the people who write these practice labs know this stuff better than I do.
This just shows you that you can't always accept as fact what they say.
>From: David Bartlett <David.Bartlett@reuters.com>
>To: Packet Man <ccie2b@hotmail.com>, ccielab@groupstudy.com
>Subject: RE: Bandwidth command
>Date: Tue, 27 Jan 2004 16:42:02 +0000
>
>That's correct - the bw statement configured on an interface is only
>used by routing protocol best path calculations. To define actual CIR
>etc you would need to employ traffic shaping.
>
>David.
>
>-----Original Message-----
>From: Packet Man [mailto:ccie2b@hotmail.com]
>Sent: 27 January 2004 15:20
>To: ccielab@groupstudy.com
>Subject: Bandwidth command
>
>
>Hi all,
>
>I'm doing a practice lab which instructs me to set the CIR on various
>F/R
>p2p sub-interfaces. For example, it said to "Assume a CIR of 256k on the
>PVC
>to R3, a CIR of 128k to R2"... etc
>
>I was thinking about whether I should use GTS or FRTS, but in the
>solution
>configs, it used the bandwidth command to fulfill that requirement which
>I
>don't think is correct.
>
>Just to double check, I looked up the bandwidth command and this is what
>it
>said,
>
>
>Bandwidth Information
>The bandwidth command sets an informational parameter to communicate
>only
>the current bandwidth to the higher-level protocols; you cannot adjust
>the
>actual bandwidth of an interface using this command.
>
>
>------------------------------------------------------------------------
>--------
>Note This is a routing parameter only; it does not affect the physical
>
>interface.
>
>------------------------------------------------------------------------
>--------
>
>Changing Bandwidth
>For some media, such as Ethernet, the bandwidth is fixed; for other
>media,
>such as serial lines, you can change the actual bandwidth by adjusting
>hardware. For both classes of media, you can use the bandwidth
>configuration
>command to communicate the current bandwidth to the higher-level
>protocols.
>
>***********************
>
>I have 2 questions:
>
>Based on the stated requirement, does using the bandwidth command
>fulfill
>the requirement?
>
>Does using the bandwidth command shape or police traffic that exceeds
>the
>amount specified in the bandwidth command?
>
>The way I read it, the only thing the bandwidth command does is tell the
>
>routing protocol what bandwidth value to use in calculating costs. Do
>you
>agree?
>
>Thanks in advance.
>
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