From: Kenneth Wygand (KWygand@customonline.com)
Date: Fri Feb 20 2004 - 00:52:10 GMT-3
Alsontra,
With respect to your last question, don't read too much into it. Only change the "max-reserved bandwidth" if you need to allocate more than 75% of the total link bandwidth to your queues. So if they ask you to reserve 25% for ICMP, just reserve 25% for ICMP and you are done. If they say reserve 25% for ICMP and 55% for all other IP traffic (totaling 80%), you will need to change the "max-reserved bandwidth" for that link to be at least 80%. I like to view it like a safety / misconfiguration protection feature so you won't accidentally break essential router communication.
HTH,
Ken
-----Original Message-----
From: nobody@groupstudy.com on behalf of alsontra@hotmail.com
Sent: Thu 2/19/2004 9:21 PM
To: ccielab@groupstudy.com
Cc:
Subject: CBWFQ ?
All,
A few question related to CBWFQ. The last question has me the most
puzzled.
1. When configuring CBWFQ the default method of packet drop is tail drop,
correct? I recall reading that WRED must be specified and cannot be used
with the queue-list command.
2. The policy default class can only use weighted fair queuing?
3. How does interface queuing and policy-map queuing interact?
4. Cisco states that the total amount of bandwidth for all classes cannot
exceed 75% of the total bandwidth available on the link. If I am asked to
allocate 25% of a links bandwidth to ICMP, does this mean use the
"max-reserved bandwidth" command and reallocate the bandwidth of the entire
link or work within the specified 75% of bandwidth allocated for
non-control/routing protocol based traffic?
The last question may just boil down to the most correct answer, but all of
the examples I've seeing do not take the "75% of link bandwidth" into
consideration. Is this just splitting hairs?
Thanks,
Alsontra
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