From: Rudi Sutiono (Sutiono@mastersystem.co.id)
Date: Wed Oct 31 2007 - 03:33:36 ART
Hi everyone,
Now I'm developing QoS for my customer and I have some problems regarding QoS
that make me confuse, could you guys help me with this problems.
Current condition: My customer has 2 site offices (Jakarta and Surabaya), the
interconnection using 10Mbps WAN link, I want to do QoS for the WAN link with
this breakdown:
* Voice: 20% priority queue (to cover all the VoIP calls)
* Critical: 40% use for database application (Oracle), mail
application (Exchange), and some critical applications
* Best Effort: Everything else
With this current breakdown, I want to make sure that voice & critical
application still get best service when the WAN link congested with other's
traffic. To test this condition, I make the WAN link congested using WAN
killer application, all of the 10Mbps bandwidth used by best-effort class (use
"show policy-map" command). After that, I try to do large database replication
for Oracle (critical class) hoping that critical class will get 40% of the
bandwidth. But it takes very long time to map fairly between the classes,
because after 15 minutes transfer, the critical class only gets 5% of the
10Mbps bandwidth (use "show policy-map" command). The questions are:
1. Is this the normal QoS behavior or not?
2. How long the time QoS takes to map fairly between the classes?
Because if it takes too long time, will affect the voice and critical class
performance.
3. What is the best QoS implementation for WAN link and MPLS? Can you
guys give me details of QoS implementation for WAN link and MPLS link (also
the configuration)?
Any thoughts or real world experience would be appreciated.
Best Regards,
Rudi Sutiono
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