Network SLA

Andreas, Rich Rich_Andreas at
Thu Feb 19 16:59:11 UTC 2009

Availability cannot be calculated in advance.  It typically is based on
historical component failure information.  Sound design ensures
redundancy and eliminates single point of failure.

As for the rest, CIR, Latency, Jitter, Loss ..... this can be tested
prior to customer handover with any number of tools and protocols
including IEEE 802.11ag/ah, ITU-T 1731,  IETF RFC2544.  Hand-helds are
typically not cost effective.  

Rich Andreas
Comcast Network Engineering
-----Original Message-----
From: Saqib Ilyas [mailto:msaqib at] 
Sent: Thursday, February 19, 2009 10:50 AM
To: nanog at
Subject: Network SLA

I am curious to know about any tools/techniques that a service provider
to assess an SLA before signing it. That is to say, how does an
administrator know if he/she can meet what he is promising. Is it based
experience? Are there commonly used tools for this?
Thanks and best regards
Muhammad Saqib Ilyas
PhD Student, Computer Science and Engineering
Lahore University of Management Sciences

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