From: Scott Morris (swm@emanon.com)
Date: Tue Jan 27 2004 - 14:59:31 GMT-3
The bandwidth command is always good to set.. It affects routing protocols.
It has nothing to do with traffic shaping or policing. You set all of those
parameters on the various command lines specifically.
It WILL, however, have a lot to do with other QoS functions (CBWFQ) when it
comes to reserving bandwidth. So keep that part in mind.
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIS, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Packet Man
Sent: Tuesday, January 27, 2004 10:20 AM
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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