From: David Bartlett (David.Bartlett@reuters.com)
Date: Tue Jan 27 2004 - 13:42:02 GMT-3
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.
This archive was generated by hypermail 2.1.4 : Mon Feb 02 2004 - 09:07:51 GMT-3