From: Ben Holko (ben@holnet.net)
Date: Thu Jan 03 2008 - 08:08:59 ARST
Why do you care what Juniper says? :)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Radioactive Frog
Sent: Thursday, 3 January 2008 7:46 PM
To: Cisco certification
Subject: policing doubt - bursty traffic behavior
Hi guys,
Command: police 10megs 1megs conform-action transmit exceed-action drop
My understanding is in above command when we do policing, 10 megs link
would
able to transmit 11 megs if bandwidth is available on the link. But I am
too
much confussed by looking at the below documents with different
argument:
Cisco says: 1 megs parameter won't do anything e.g. 10 megs policy rate
will
be only 10 megs (it wont go to 11 megs with burst).
Juniper doc says: bursting will be additioan to the 10 megs so link
would be
able to transmit 11 megs (10megs+1megs burst).
Can someone clearify this to me please....
Cisco document says about policing: " Policing Propagates bursts. Does
no
smoothing."
http://www.cisco.com/en/US/docs/ios/12_0/qos/configuration/guide/qcpolts
.html#wp5221
Juniper document says: "
"Policing employs the *token-bucket algorithm*, which enforces a limit
on
average bandwidth while allowing bursts up to a specified maximum value.
It
offers more flexibility than the *leaky bucket algorithm* (see Configure
Receive and Transmit Leaky Bucket
Properties<http://www.juniper.net/techpubs/software/junos/junos42/swconf
ig-interfaces42/html/interfaces-physical-config12.html#1013471>)
in regulating bursty traffic and never discards packets."
http://www.juniper.net/techpubs/software/junos/junos42/swconfig-interfac
es42/html/firewall-config18.html
Frog
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